Petcock Leaking In Off Position
Besides the petcock, the coil wire is real stiff and has come off the coil. Where is radiator petcock on 1989 Chevy Celebrity 2. But it only leaked above a certain fuel level in the tank. The petcock on it doesn't work, the guy I bought it from installed a valve after the filter to shut off the gas. ;^) I was able to tell the friend broke down along side the road look for the vacuum line that fell off. If the petcock has been leaking into the oil, not only will you have too much oil, what's in there will be thinned out and much less effective. I tried a new rebuild kit and different valve bodies, cleaning, bonding the press fit connection, different washer at the drain screw, etc. One was hauled home the other was broke down along side the road. Same routine I used for all motorcycles previous to the wonders of vacuum operated petcocks. It leaks around the red barrel that rotates to the 3 positions, on off and reserve. The fuel filter is missing in this photograph. Moving the petcock tab from horizontal, stops at vertical position and nothing comes out, have tried the following: WD 40 though the spout and around the tab and move tab many times and also tried pulling out while doing so Reservoir cap off. Found that gas still flowed until petcock was turned to off position. Keeping Manual Fuel Petcock On Good Advice? the petcock in the "open" position, so that the carb float bowl's because the petcock is OFF, either automatically. You should probably change your oil now, before you start it up. Quick removal of your tank with great ease. The last few days the bike has been running very rich. Petcock (fuel tap) fix. 1) The Raptor's Petcock ON /RESERVE position runs the same amount of fuel flow as the stock petcock on the PRIME position? YES, full flow at all times 2) Now that my Stock Petcock's ON position won't give any fuel flow (works as OFF now) Is it ok to just run my Bike regularly on Prime ?. When I bought the fuel tank, it came with a new petcock. About 3ft of hose and a pile of hose clamps and you'll be off to the races. My brothers 88 has the same problem. Tight petcock: If your petcock becomes hard to turn on and off do not continue to use it as it can weaken the solder holding the nipple into the tank. 2004 Polaris Sportsman 400 4X4. fuel petcock leaking where can i get a rebuild kit on 2001 750 katana diaphram bad - Suzuki 2001 GSX 750 F (Katana) question Search Fixya Press enter to search. Using your owner's manual or look for it yourself, locate your radiator's drain plug. That's when you know it's the petcock and not anything else associated with the fuel system. It's the seal between the rubber disc w/ 4 holes and the back of the lever that will keep a petcock from leaking. It should have a square fitting on the inside. Remove the thermostat for this. So fuel would flow from the upper right inlet, through the holes in the petcock handle, then out the hole at the bottom to the carb. flow if the various parts are functioning even if the petcock is left in the on position. Want to prevent, automatically, fuel spills into the engine/out the dump tube from malfunctioning float valve when engine is OFF? Live with the stock petcock, tolerating its risk of malfunction. Close the tank petcock (see D). By Andrew Pollack on 01/17/2011 at 10:13 AM EST Eighteen months ago I wrote a little article about how to adjust the brakes on a lawn tractor because I couldn't find the information myself when I searched. was overflowing when the quad was sitting up and the petcock was open. When I put the lever in "on" position, it starts dripping gas, but if I switch to "reserve" it doesn't. Your getting a stumble and rich fuel smell when going slow and at idle because one or more of your float needles in not sealing and is letting too much gas into the carb. At night some fuel leaks down into the cylinder bores. The fuel filter is missing in this photograph. Any advice? I'd like it fixed for this weekend. He has been having a problem where the petcock wont shut off fully when set to the off position. A proper working float system should seal off the flow gas even if you leave the petcock in the on position. How to Drain the Gas from Your Generator Gas Tank and Carburetor. At worst, fuel fills the cylinder, eliminates compression and prevents the piston from moving. So fuel would flow from the upper right inlet, through the holes in the petcock handle, then out the hole at the bottom to the carb. I removed mine recently and found a slight figure eight in the bottom of the plastic filter where it meets the petcock assembly. 2 days ago · Find many great new & used options and get the best deals for For Honda TRX 250 300 TRX300 Fourtrax Gas FUEL PETCOCK VALVE SWITCH at the best online prices at eBay!. Remove the float bowl by levering backwards the small loop in the stiff bale wire that holds the float bowl to the carburetor. The TPR appears fine and dry. Noticed today when trying to turn to reserve, that. The petcock isn't like ones I'm used to on other bikes. Type: Fuel Valve Petcock. So while it is on the "on" position, your petcock self-closes. From what I understood it was your fuel line leaking going into the carb. I forgot to turn the fuel petcock in my dr650 overnight for like 16 hours. With the engine off, if you turn the petcock to the "on" setting, then disconnect the fuel line and if you have fuel still leaking out the petcock, you have a bad petcock. The only thing I've been able to find online is that when the lever is facing to the back of the bike, (9:00 position) it's off. Discussion Forum: PETCOCK - HORROR - STORY - WHEN DID YOU LAST CHECK AND CHANGE YOURS ?? • GL1500 Information & Questions • The premier web site for Goldwing technical information, DIY tutorials and community discussion. Pull the fuel line off and look inside to see if the valve opens and closes properly, but first take a phillips head and remove your petcock knob to check that it isn't stripped. Found that gas still flowed until petcock was turned to off position. I walked around the bike, searching for any clue as to why this must be. I have yet to hear of anyone experiencing unauthorized fuel flow into an engine with properly installed overflow tubes. Your petrol pipe certainly was in a bad state. I took off my tank and unscrewed the petcock and I noticed one of the thin films that cover the spacer on both sides was ripped. The petcock on my FA50 is stuck in the prime position. I started looking and found some under my carb. Shop the best Harley-Davidson Petcock Components for your motorcycle at J&P Cycles. Stupid rookie question, ON, Reserve, or PRI? What position do I put the fuel valve on when my bike is off? I've noticed it leaks a little gas after I've ridden it. I also suspect a problem with the diaphram in the petcock?? I know that the regular running position requires suction from the carb?. 2007 Honda VT 750 Shadow fuel valve positions Google Search Fuel shut off. The big danger of a leaking petcock is that fuel will overflow the carbs and get into the cylinders and finally, into the case where it will mix with the oil with disastrous results. It had already been "upgraded" to something rubber and hose like, but whatever it was is not impervious to gasoline. The only thing I've been able to find online is that when the lever is facing to the back of the bike, (9:00 position) it's off. Most older motorcycles have a three-position fuel petcock valve (known as a "petrol tap" in the UK) mounted on or nearby the fuel tank to control the supply of gasoline: on, off, and reserve. It actually cut out 10 miles from home and. They were not gravity fed petcocks. _r_'_High temperatures are generated by the electric motor and the pump. Just wnat to check it before I take it to the dealer just to have them tell me it was the petcock leaking. This is a 1979 KZ750 twin. A leaking fuel valve can be caused by long term storage. Title says it all, just rebuilt the petcock just as an "incase" measure trying to troubleshoot my bike not starting and now when it is in the off position it's leaking. Use a motoplat rotor puller to get the ignition rotor off. My radiator is leaking from the petcock so I purchased a new valve. 8 Gallon Capacity. As you may know, the petcock is a vacuum-fed when in the on position and when in the prime position it dumps fuel into the carbs through gravity. Proper PETCOCK position when not. Recently, I turned the fuel petcock to the off position and later on noticed a small puddle of fuel on the ground. It only seems to do it when I first start it or turn it off. However, if the petcock is in the "OFF" position, no fuel should leak from it. He tells me he took the tank and petcock off & there are no tubes running up into the tank. Either that or it is, and your carb float level is just a tad too high and when your running it takes care of itself. Hi I have a problem with my Virago 250 which only started a few evenings ago after I replaced the exhaust. Basically there are 2 circuits in the petcock, 2 holes from the tank. Maybe also increase the pressure on the lever by lightly bending the round wave spring. If the carb cannot dump gas into the cylinders, I advise leaving the petcock on. It’s mentioned in the user manual of my motorbike, that when not using the vehicle, I should turn the petrol tap (the one that has three positions “On”, “Off” and “Reserve”) to “Off” position. Filled up the radiator with new coolant and next morning its leaking!. So you buy a used one off the shelf at a salvage yard. Find great deals on Motorcycle Petcocks for your motorcycle at J&P Cycles. Took float bowl off mik 42 for jet change. There are a number of different petcock sizes available. The OEM valves are noted for leaking when in the off position, the little ball doesn't always sit right. Pull the main fuel hose off and its dry. Bike starts and runs, move petcock to ON and the bike runs until the float runs out of gas. Here's a list of the things I've done: Replaced the flywheel with a NOS flywheel off eBay. 2 positions. I pulled my fuel petcock off recently to drain my tank for painting. Close radiator petcock and install engine block drain plug. I've labeled the inlets and outlets for the petcock. My radiator is leaking from the petcock so I purchased a new valve. When I inspected the rubber washer, I noticed little black rubber particles - the rubber washer, through me tightening the screw or the gas contacting it, started to kind of disintegrate into little particles. It only appears to have one replaceable o-ring and it's the one that goes around the lever. The petcock isn't like ones I'm used to on other bikes. (Again plastic-handled fuel supply lever that breaks if you accidently hit it with a foot. It leaks around the red barrel that rotates to the 3 positions, on off and reserve. The radiator drain petcock is usually located at the bottom of the radiator on the lower tank area, Only open this when the engine is cold. If your vehicle doesn. Fill it up and while hot and the thermostat open or out. Disconnect output of petcock (petcock in "off" position), attach one end of two feet of purchased gas tubing to the output, other end to gas can. Remember, Shiny side up! Manual Petcock (Harley Davidson) harley davidson owners ride off cliff. Wow! That is a much bigger 4-hole disc for the '87. New Sixty-5 Petcock leaks: but where does the gas leak from?. The petcock on my '98 vn800 seems to have a problem. It will not do this when it is turned to the on position. Raise belly tank into position with. Glad I took these pictures first, they helped me remember how to put it back together. It was leaking in "off" position more or less ever since I installed it on the bike. suzuki's automatic fuel petcock system works off of engine vaccum. Simple/quick fix to get you going. RESERVE is used when you run out of gas in the ON position. I'm wondering if this could be from a bad petcock since it happened while the engine was off. Simply disconnect the fuel line from the unit. Please and thanks. The tank's cosmetic plastic lower section needs a small cutaway for these to fit. I walked around the bike, searching for any clue as to why this must be. Most older motorcycles have a three-position fuel petcock valve (known as a "petrol tap" in the UK) mounted on or nearby the fuel tank to control the supply of gasoline: on, off, and reserve. No more gas everywhere when I come back. The bike starts poorly because the vacuum leak makes it run lean and then runs when the leaking float needles flood it. I believe that gas leaking into the crankcase is responsible for the failure of more than one 4 stroke engine on this forum. They are super cheap and work well. The drum may be held in its raised position by the water pressure in a flotation chamber beneath the drum. A typical manual petcock utilizes a ball valve construction, which limits the use of the tap to simple "on" and "off" applications. I'll probably go back and check out that o-ring. Never had to touch the petcock just relied on the fuel gauge and had no issues. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus everyday tech support. you are looking at the carburetor from the. I have a 2007 honda 750 Shadow spirit and while I was bringing it home from the dealer it stalled on a four lane highway. Fuel should flow out fast. Trip the fan belt and with the thermostat out fill it to the top of the housing and then crank it up and look for compression bubbles. Diesel fuel can easily become contaminated by water because diesel fuel absorbs water more than gasoline does. There is a plunger on the back opened by that vacuum line that goes to the intake manifold, shuts off fuel when the engine is stopped. Honda Power Equipment Fuel Shut Off Valves available online and ready to ship direct to your door from an Authorized Honda Engine Dealer. the selector switches which one is open to the outlet that goes to your fuel line - on, reserve or both closed = off. If you turn the petcock to the off position and the gas stops leaking than your petcock is working like it's made to your problem is in the carb or carbs. - Remove petcock from tank and place the 2 screws off to the side, but trash the large o-ring that sealed it to the tank. This place forces the petcock open with the engine no longer working. It is the position you always return the valve to when refueling. The tank's cosmetic plastic lower section needs a small cutaway for these to fit. The obvious things that are different are: 1. How to fix your motorcycle petcock without a rebuild kit This is a very simple procedure detailing how to restore a petcock without having to purchase any new parts. I removed mine recently and found a slight figure eight in the bottom of the plastic filter where it meets the petcock assembly. Prior to that, I always left it in the ON position & didn't have any leaking problems. When he removed the fuel line, with the key in the off position, and the petcock set to on, gas was pouring out of the petcock. I tried a new rebuild kit and different valve bodies, cleaning, bonding the press fit connection, different washer at the drain screw, etc. I would think that in the 9 or 3 o'clock postion they would be closed. Obviously you'll need to turn the pet**** to the off position and either use stable in the tank or depending on how long your winters are you might beable to just fill it full with fuel. NC residents will pay After getting the returned item, we will refund the customer at the item's price excluding the shipping costs to and from. I didnt notice this until a day or two ago when I smelled gas. Moving the petcock tab from horizontal, stops at vertical position and nothing comes out, have tried the following: WD 40 though the spout and around the tab and move tab many times and also tried pulling out while doing so Reservoir cap off. Fuel Petcock Leaking A number of owners reported leaking fuel petcocks. IIRC it was a bayonet mounted nylon petcock, and took a surprising amount of force to pull it out - that's after determining at which position it could be pulled out. when i tilted the tank, it starts leaking. And it doesn't seem to do it all the time. 4) Accelerator pump weak or not spraying. It is either OFF (c = closed) or ON (a = open). if this is the case, you might have gotten gas in the oil. A few years ago, I had a real difficulty with a customer's car that would run about ten miles, then run out of fuel (no delivery to the carb). RE: Proper PETCOCK position when not in use (07-29-2013, 12:56 PM) Boomer Wrote: So my 250 Vstar has 3 petcock positions (Reserve, Prime and ON) and the dealer told me that I should leave the petcock on Prime when I am not using the bike. As you may know, the petcock is a vacuum-fed when in the on position and when in the prime position it dumps fuel into the carbs through gravity. Yesterday, when I went to take my son for a ride I noticed a stream of gas coming out of the right carb. Shop for Fuel Tanks, like K & L Fuel Petcock Repair Kit at Rocky Mountain ATV/MC. I switched the petcock to the off position and thought that was that. I managed to find a o-ring that works for the petcock, so maybe I can stop that leak. The fuel filter is missing in this photograph. I ordered a replacement from Common Motors Collective - and went to replace it - to find almost no resources on doing so. DRZ: Leaking Petcock. I have fully rebuilt the carbs and have done the valve lash and a ton more. You should now have a clean, leak-free petcock. And as said above by mich it's true a small residue of fuel will be left in the tank to get out by hand before removing the petcock. The best way to do this is with a small punch and a light hammer : give a slight blow on either side of the rim of the petcock body to bend the metal over the ring a bit. Hi I have a problem with my Virago 250 which only started a few evenings ago after I replaced the exhaust. Put yourself on the bike and position it upright in the riding position in front of a wall. I think I've had this problem before, and was just wondering if I'll be needing to rip it all apart again to fix. That way you can more securely keep the petcock in position without the damage that pliers would do. However, this drain valve can begin to have leaking problems over the life of your car. Review (mpn:kfx400 for sale) 400 Kfx400 Kawasaki Petcock Tank Switch Kfx Assembly Fuel Atv Shutoff Valve. The petcock gets turned off right after the key is turned off. Wouldnt start and had low compression) As i said be carefull if this is the case. This is because the fuel rail pressure has dropped and fuel has leaked into the manifold and causes the spark plugs to become flooded. 2000 Polaris Sportsman 335 4X4. The parts are cheap and taking the fuel tap off is fairly easy. The high-mounted, drag-style handlebar positions your upper body in an almost upright position, arms straight out ahead, and your legs are comfortably stretched forward. Modern motorcycles utilize vacuum-operated fuel petcocks. Simple/quick fix to get you going. Only there was many a night I forgot and came out to to find the petcock had stayed tight and dry. I looked into the 660 petcocks before and thought people wanted too much for them on ebay, i randomly got my petcock off a peice of crap pit bike my brother had, tryed it out and it worked. The petcock isn't like ones I'm used to on other bikes. Therefore I began turning off the petcock and let the engine run until it starved of fuel. The OEM valves are noted for leaking when in the off position, the little ball doesn't always sit right. When in PRI or the petcock is leaking in the on position and the bike is off, fuel can pass the needle and seat to fill the cylinder with fuel and could cause hydrolock or contaminate the oil. radiator petcock location - 2006 Buick Lucerne Close. It only appears to have one replaceable o-ring and it's the one that goes around the lever. When I want the fuel off I can just turn it to "ON" or "RES" since those only flow with vacuum from the engine and since I plugged that up they don't. RESERVE is used when you run out of gas in the ON position. Remove drain plug and allow all coolant to drain. If you are referring to leaking past the petcock diaphragm when the bike is running (manual. RESERVE---12 o'clock position. The Everbest petcock and its standard BMW tool to install/remove it. the fuel tank could be lower than the carbs, making a fuel pump necessary. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus everyday tech support. Bit of a coincidence, I've been riding an '89 XJ600 for the last year. So, you don't want no stinkin' vacuum-actuated petcock? Convert to manually-actuated only (remembering it's up to YOU to shut 'er down when you stop). That's when you know it's the petcock and not anything else associated with the fuel system. We also have this petcock with 18mm x 1mm too,please contact us if you need the petcock with 18mm x 1mm,please measure your original petcock BUNG SIZE before ordering it. 830IL2 – 4. On some motorcycles , the position of the petcock lever may permit draining the last part of the fuel tank as a reserve position. This is a 1979 KZ750 twin. I know I have to turn it on and off but it saves me having to worry that the sump is filling up with fuel. Sounds like a bad petcock. In the "on" position, fuel. I DO NOT want to go to a pingle petcock. My radiator is leaking from the petcock so I purchased a new valve. One final option is to replace a faulty stock petcock with a vacuum-style petcock which has a true "off" position instead of prime. Most petcocks are different in that the "off" position is fully to the end of the motion of the selector which leaves no room for missing the mark as you can with the stock unit. stand clear of safety valve & scalding steam. Dished And Axed Gas Tanks For 1995-Up Sportsters. Upon completion the petcock STILL leaks and now the temp gauge needle barely passes the 1/4 mark. If your sure that something in the fuel tap is leaking just reubild it. Kind of a hinky design. Signs of a worn fuel petcock include fuel leaking from the section of the valve located below the valve handle or fuel leaking from any part of the valve body. Otherwise, with a gravity feed petcock, it is always wise to turn your fuel valve to the off position when not in use. ;^) I was able to tell the friend broke down along side the road look for the vacuum line that fell off. K&A fuel petcock repair kit This was an easy fix for my dirt bike, it was cheaper than any one else and it works great, no more leaks, I ordered one from someone else first and it wasn't the right one, I had to return it, that's when my gf found motorsport online, glad she did. Fuel Taps for Classic Motorcycles - 1/4inch , 1/8inch , 3/8inch. The 'petcock' is still leaking even with the valve closed all the way. Whether you rebuild the petcock or replace it, you still have not fixed the problem. It does exactly the same thing on the right and left petcock. Even if the float needle valve is worn and leaking, if the petcock isn't allowing any gas to come down there is no stream to fill the float bowl and run into the cylinder. The "Pri" or "prime" position will flow all the time, by-passing the vacuum powered portion of the petcock. It should have a square fitting on the inside. The valve attached to my radiator is leaking at the head, how do I stop this. It only appears to have one replaceable o-ring and it's the one that goes around the lever. The fuel outlet on the 1987 petcock is 3/8" (10mm fuel hose), while the fuel outlet on the 84, 85, 86 is 1/4" (5. ON - gas goes to a fuel hose; OFF - gas doesn't go to a fuel hose; RES (reserve) - gas goes to a fuel hose, but the hole in the tank is lower than in the ON position. Once I had it installed, I switched the petcock to prime to see if there were any leaks. It shouldn't because there should be no vacuum to allow fuel to flow. When I replace or top off the oil, I leave the top petcock open and pour slowly until it begins to drip. My Virago has a vacuum operated valve and instead of off, there is a "Prime" position that draws from the reserve but does not require vacuum to flow. Remember, Shiny side up! Manual Petcock (Harley Davidson) harley davidson owners ride off cliff. the tank at all times so had probably been leaking past the petcock for many. When I want the fuel off I can just turn it to "ON" or "RES" since those only flow with vacuum from the engine and since I plugged that up they don't. - Turn the selector knob to face Down, in the center "Fuel/On" position. They are super cheap and work well. If I have to replace: another factory valve or pingel? Have used them on older bikes w/no problems. I also suspect a problem with the diaphram in the petcock?? I know that the regular running position requires suction from the carb?. If your vehicle doesn. and nothing worked. Remember, Shiny side up! Manual Petcock (Harley Davidson) harley davidson owners ride off cliff. 2007 Honda VT 750 Shadow fuel valve positions Google Search Fuel shut off. If you have a leaky carb, with the fuel cock on, fuel can leak down into the cylinders, fill them up with gas, and make it impossible to start the engine. I have had my tank off three times in the last 24 hours doing some carb tuning. You can now switch petcock positions with confidence, each position having its own, easy to feel detent, O-Ring seat secure any leak from the petcock to the carburetor, Petcock handles motion is virtually friction-free using internal ball. The float in your carburetor bowl drives a valve which allows gas into the bowl when the level declines. 5mm Motorcycle Fuel Switch Valve Petcock For Honda , Find Complete Details about 16 X 1. 1) Ensure the engine is completely cool so you don’t burn yourself while you work – wait at least two hours after turning it off to be on the safe side. If you don't shorten the boss the screws will not clamp the retainer properly. Many do just that, but many always turn it to the "Closed" ("Zu") position each time they shut down the engine. The high-mounted, drag-style handlebar positions your upper body in an almost upright position, arms straight out ahead, and your legs are comfortably stretched forward. How to tell if petcock is bad ? One way is to temporarily eliminate it and associated fuel lines entirely, ie bypass it. I thought all was good. When we switched it to off, it did stop the flow of gas. This includes the fuel system. ON is used during normal operation of the bike. OFF: Turn it to OFF position when done riding to prevent overflows. ) I always turn my fuel off web stopped, short or long term just in case a float needle sticks and the bowl fills up, gas will run out onto your boot and the ground. This picture shows the internals of the petcock. In the "on" position the fuel is fed by engine vacuum. Switching the Petcock to OFF won't help you. Plug the open vacuum leak and let the carbs run out. The diaphram is not leaking, the bike will run a couple of miles when I switch the petcock to off. I think I've had this problem before, and was just wondering if I'll be needing to rip it all apart again to fix. Trying not to laugh TOO hard, I mentioned that the fuel tap was off. VIRAGO FUEL SYSTEMS The main points about fuel tanks are these: they need a way of letting fuel out to the carbs, and they need a way to let air in as the fuel goes out, to avoid a vacuum buildup in the tank. With the petcock off, disconnect the fuel lines and slip a plastic Baggie over it, secure with wire or rubber band. 8 Gallon Capacity. This indicates an operational petcock. Position drain pan under engine block drain plug (C) at right side of engine. The only real benefit to the stock petcock is it cuts the fuel off when the engine is off. Your getting a stumble and rich fuel smell when going slow and at idle because one or more of your float needles in not sealing and is letting too much gas into the carb. Fuel Flow Rate: With no in-line fuel filters installed and the carb. fuel petcock leaking where can i get a rebuild kit on 2001 750 katana diaphram bad - Suzuki 2001 GSX 750 F (Katana) question. Same routine I used for all motorcycles previous to the wonders of vacuum operated petcocks. Is there some trick or position it needs to be in for it to be removed? Dont want to have the valve break off in the radiator. I'll probably go back and check out that o-ring. The kit comes with a new o-ring for the petcock-to-gas tank connection as well. It shouldn't because there should be no vacuum to allow fuel to flow. the fuel petcock could be vacuum operated, closing with the engine off. The three positions of a Karcoma petcock. This article presents a. Many do just that, but many always turn it to the "Closed" ("Zu") position each time they shut down the engine. First off my bike is a 71 CT70 with stock carb). So far mine has not had a problem with leaking fuel in the crank case or leaking fuel externally. It is simply an on off valve. What's the difference between old and modern petcock valves? Compared to older models, you'll notice that newer petcocks lack the. 1999 Polaris Sportsman 335 --. I have a 1981 XS400 special. Position drain pan under engine block drain plug (C) at right side of engine. Shut the petcock OFF You can chase your tail round and round trying to make it right, in theory it should work that way, too often in the real world it doesn't As ED pointed out, it's a simple ON/Off valve Turn the petcock to the off position, problem solved. Remember, petcocks have left hand threads so to open and close the petcock valve you turn it in the opposite direction to normal threads. It would be nice to just pop the old one out and new one in, letting as little coolant out and as little air in as possible. V-Star 650 Classic - gas tank/petcock question The tank runs through all the gas, instead of letting me switch over to reserve when I need to. The piston came on my CR125 and I installed yesterday. It shouldn't flood into the airbox, cylinders. 2003 Polaris Sportsman 400 4X4. I left it in that position for a while to make sure it wasn't leaking a little, and it did not leak. The big danger of a leaking petcock is that fuel will overflow the carbs and get into the cylinders and finally, into the case where it will mix with the oil with disastrous results. The "Pri" or "prime" position will flow all the time, by-passing the vacuum powered portion of the petcock. Gas has been leaking from the ATV and has seeped into the concrete floor. I had a slight leak from a Chrysler minivan's petcock. Kits will fix a leaky or inoperable petcock with parts that exceed OE specifications. most likely your problem is the petcock not the carb. Petcock stuck on ON position. Same thing, no different. The petcock is likely faulty. Raise belly tank into position with. open petcock to "reserve". and nothing worked. Otherwise, with a gravity feed petcock, it is always wise to turn your fuel valve to the off position when not in use. The mechanic told me it shouldn't pour out with the bike off, and that the vacuum should turn tee gas off even with the petcock in the on position. #12 Fuel Shut Off Switch Failure. The petcock came off the tank very easily this time, as it should. it is a "dual purpose switch! leading many people to an un-needed carb clean/repair when they cant start generator. Also even on pri, you should not get gas leaking out unless there is a problem with the petcock or (more likely) a problem with the float valves in the carbs. We suggest running the tank down to reserve before removal, both for the ease of moving it with less weight, as well as positioning the tank during the petcock changeover. the rubber would swell where it contacted the gas, and fill out into the hole it was supposed to just block. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus free everyday tech support on aftermarket Harley-Davidson Petcock Components & motorcycle parts. The added bonus is that you will find the flow rate when the petcock is in the "on" or "reserve" position is what it used to be when it was in the "prime" position Jess, I think it would be great if you wanted to put together a kit with a stamped plate & gaskets. Whether you rebuild the petcock or replace it, you still have not fixed the problem. RESERVE is used when you run out of gas in the ON position. I love the on/off design of the dirtbike petcock rather than the on/off/reserve. Valkyrie Belly Tank Information Packet. Key -on, petcock-on, key-off, petcock-off, every single time.