Question about Yamaha 07 Wolverine 450 Intake Air Tube Joint

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I have a 2006 wolverine 450 the fuel does not flow from the tank at intermittant times. I cleaned the carb, new cap emptied the tank and every once in a while it happens some times on the trail sometimes in the garage. I installed a clear fuel filter and when i look it is completly dry. Im at a loss it has been to the dealer many times but of course doesn't happen when its there. HELP!!!!

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Check for clogged air vent on tank. air has to come in to vent and let gas down thru tank.

Posted on Mar 13, 2014


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I have a 2005 Arctic Cat 500 that will crank and run great. Push the throttle acts starving for gas. I have replaced the fuel filter, fuel line, and cleaned the tank. Also replaced carb. NEED HELP!

Try running it with the cap off the tank. Sometimes the cap will fail and wont allow air back into the tank when you draw fuel from it. This starves the engine of fuel.

May 20, 2016 | Arctic Cat 2006 500 4x4

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Gas will not flow from tank to motor while running

Everybody had a crack at this problem, another thing would check is these engines sometimes have a primary fuel filter inside the tank itself. Drain the fuel and gently blow compressed air back through fuel line towards tank then rinse the tank out with fuel, refill and try run engine again

Aug 07, 2014 | Honda 8 HP Engine

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I have a 2004 Yamaha YFZ 450 the bike will start and drive but as soon as it warms up when you push the throttle it starts to cut out... What is the problem?

There is not really enough info in your post to narrow down the problem. Hesitation during acceleration can either be fuel related or ignition timing related. Once up to speed, will it maintain that speed smoothly?

If you have a timing light, check the timing at idle. If it is OK, then it is probably fuel related.

Assuming you have not messed with the ignition timing, if it idles, but won't accelerate, it is probably starved for fuel. 1.Check/change the fuel filter- easy and cheap
2. pull the fuel line off the carb, and make sure fuel flows from the tank freely.
3. If there is good fuel flow to the carbs, pull the carbs and clean them.

Sep 30, 2013 | Yamaha 06 Yfz450 Yfz 450 Carburetor Carb...

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2006 Yamaha TTR 125E - carb not getting gas

Hi, Kevin always check fuel flow first to isolate the problem area otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel cap or fuel tank not venting properly.
3. Fuel filter clogged with rust or dirt.
4. Fuel valve/petcock not in the on or reserve position.
5. Vacuum line to fuel valve cracked, broken, pinched, or missing*
6. Fuel valve/petcock clogged or diaphragm cracked, cut or torn*
7. Fuel line from the fuel valve to the carburetor or fuel pump clogged, cracked, pinched, bent, broken, or missing.
8. Fuel pump not working*
9. Fuel line touching cylinder or head causing fuel to boil and vapor lock, repair by rerouting and wrapping line with convoluted tubing.
10. Carburetor inlet clogged.
11. Carburetor float or needle and seat stuck.
12. Carburetor not venting properly overflow line or bowl fitting clogged, pinched, or bent.
* If equipped or applicable.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
Dirt Rider Magazine
TTR 125 won start need help TTR
Yamaha TT R125EW Owner Service Manual
OEM parts for Yamaha
Yamaha TT R125E Owner Manual

Jun 13, 2013 | 2006 Yamaha TTR 125 E

1 Answer

2003 polaris magnum 330 i have cleaned the carb, gas hose to the carb i also cleaned. when ever i start it the only way it runs is with the choke on and no gas is pouring out of the gas line and the t

Sounds like contamination has set into the fuel shutoff valve on the bottom of the fuel tank, or the fuel cap vent hole is plugged. Test the fuel line that comes from the fuel tank. First turn the valve off, disconnect the fuel line that feeds the carb, insert the fuel line into clear small container, then open the fuel valve to the on position and look for fuel flow,now turn the valve to the reserve position and check again for fuel flow. If these test fail to yield fuel try the procedure again this time with the fuel tank cap loosened and check for fuel flow. If in both tests the fuel fails to flow then the problem can be isolated to the fuel valve/tank outlets or the fuel line to the carb.

Dec 09, 2011 | Polaris ATV

1 Answer

Why does my suzuki gs 450 l leaking gas from the carbs over flow as soon as i start it ?

The fuel petcock for your gas tank has a vacuum bladder in it. If there's no engine vacuum, fuel is supposed to stop flowing out of the tank, preventing carb overflow and accidental draining of the tank. However, once the engine starts, fresh gasoline will begin to flow out of the tank into the carbs. I believe but am not certain anymore that the vacuum cutoff mechanism is disabled when you turn your fuel petcock to "prime" or "reserve." If that is correct, you should be able to duplicate the carb overflow with the petcock in one of these positions.

As for the specific cause, it sounds like one or both of your carb floats may be sticking in position, preventing the fuel shut-off needle from seating correctly. This can easily happen if you haven't ridden the bike for a while--the most volatile compounds in the gas in your carbs will evaporate, leaving behind an increasingly gummy and sticky substance that will eventually harden into varnish if it's not cleaned out. That gummy stuff seizes up the pivot points for the carb floats, so they don't move correctly. Gummy gasoline residue can also build up over time, even if you ride the bike often, though this usually happens after the bike has been sitting. The fix for this is to clean out your carbs. On an early (1982) GS450, I was able to do this once by removing the carb bowl without removing the carbs from the motorcycle and spraying the float pivot points with a heavy-duty gum cutter (Berkebile 2+2--it's like carb cleaner on steroids, but it will also damage paint).

By the way, if I remember correctly, your carbs have a crossover tube to ensure that both carbs have the same gasoline level in them. This keeps the fuel mixture even for both cylinders and keeps the engine running smoothly. However, that also means that a single carb with a stuck float will flood both carbs equally.

May 28, 2011 | Suzuki GS 400 E Motorcycles

1 Answer

Hello all. Hope you can help! The bike starts but begins to splutter and kickback, then stalls, after about 5 mins of riding.

The bike sounds like it's running out of fuel. Try loosening the fuel cap, don't take it off, just loosen it so that the tank can get air into it. If this solves your problem, buy a new fuel cap as the vent is stopped up. If this does not fix your bike and it's fuel injected, you need to take it to a dealer. If you've got a carb equipped bike, It could be the fuel strainer in the tank or the vacuum operated petcock. If the diaphragm in the petcock has a hole in it, it will not let fuel flow as it should and starve the carb.

If you have such a petcock, you can drain the fuel from the tank by loosening the large 1" nut and letting the fuel run out. Catch it with a large funnel and a gas can. Once it empty, finish removing the petcock. Disconnect the large fuel line and the small vacuum hose from the backside of the petcock. Remove the four screws holding the flat plate on the backside of the petcock. Carefully disassemble the plate and you'll find a needle, a small spring, and a diaphragm. Make sure the fuel passageways are clear in the petcock by blowing air through them. Hold the diaphragm up to a light and gently stretch it while looking for pinholes. You can get a new petcock from your Harley dealer.

Good Luck

Mar 04, 2011 | 2006 Harley Davidson FXDI Dyna Super Glide

1 Answer

My 2004 crf 450 will not run when you take choke off

Hello, Im Bobby.

I would start off buy checking the fuel flow to the carb to do this simply remove the line going from the fuel tank to the carb. There should be good fuel flow at the carb with the line removed. It there is lack of fuel there then the fuel filter is pluged or something is in your tank causing the restriction. If you have good fuel flow at the carb then Im going to say there is a blockage in your carb and the carb would need removed , tore apart and cleaned and reinstalled.

May 29, 2010 | 2005 Honda CRF 100 F

3 Answers

Not getting fuel

pull carb and clean jets

Jan 30, 2010 | 2004 Yamaha YZ 450 F

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