Question about 2000 Harley Davidson FXDWG Dyna Wide Glide

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Bike is not getting gas to carb

I think the suction line is off carb

Posted by Anonymous on


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Hi Anonymous check the vacuum line from the intake manifold to the fuel valve for cracks, broken or not connected. Also check the gas cap for venting it has a one way valve easily confirmed by putting your lips up to valve and applying suction and pressure. Have nice day.

Posted on May 18, 2015


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Posted on Jan 02, 2017


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My YFM250 Quad bike is getting an air lock in the fuel line? The line to the carb is sealed and clear.

Hi Joshua
it sounds like to me that the fuel supply is being used and not supplied quick enough to the carb, the first thing i would do is change the fuel filter, at least this will remove one possible problem, then i would check the vent on the fuel tank as it could have a blockage in it, what could be happening ( i gather this uses some sort of either suction to supply the carb , or gravity feed) it might be causing a vacuum in the tank which is stopping it from letting the fuel flow normally, the other thing is, if it is using a suction supply there might be either a hole in the air suction pipe ( or the pipe that sucks it into the carb ) and it is loosing suction hence the fuel is used before it can be re-supplied to the carb. hope this gives you a couple of ideas..

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How can i tell if the gas cap is giving me problems. The bike will not start as if there was no gas getting to the carb. just had the carb cleaned out and that didnt seem to fix the problem. Thinking it...

Simple-open the gas cap and try to start it. I have had the gas cap vent fail in Honda street bikes and prevented fuel flow. Also, I believe this bike has a vacuum operated shut off valve. Though they normally don't fail, if the vacuum line connected to it is leaking it won't open. You may have accidently misrouted the hoses during carb removal. The valve will be inline before the carbs if it has one.

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I have a 2250 Poulan. The fuel lines have been removed. Is this the correct routing for the fuel line? Starting at the filter in the tank,will the line go to the bottom of the carb.? Then the line goes out...

Is there a fix for bar oil running out of the saw all the time until the tank is empty?

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Is this the correct routing for the fuel line? Starting at the filter in the tank,will the line go to the bottom of the carb.? Then the line goes out at the top of the carb. to the primer\'s suction side? Then out of the primer to the fuel tank? This route the primer pulls gas through the carb. Does it make any difference which hole in the tank the lines go to?

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Dec 29, 2010 | Poulan P3416 16Inch 34cc 2Cycle Gas...

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Ok so i have a 07 yz 250f it wont start i rode it a few months back no problem now it has set in storage and wont start it not the gas its all new could it be the plug or old gas in the carb

If you think it's the gas in the carb, use the carb drain screw at the bottom of the carb, and let it refill with fresh gas. You can also force a fresh fuel draw by covering 90% of the intake and turning over the bike. The suction created by the piston will force a fuel draw from the main jet. Verify that you are getting fuel to the plug by checking to see if it's wet with fuel after attempting to crank it over. IF that is true, then verify spark. Let me know the results and based on what you say, I can guide you on what to look at next.

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1 Answer

The fuel lines on my ryobi stinger scorpion brushcutter have deteriorated, I;ve fitted new lines but I think I;ve connected them incorrectly, it won't run.

Fuel filter to bottom of carb. The suction port of primer to the top of carb outlet line to other port to tank.
To tell which port is outlet put your finger on one port and push bulb if the bulb collapses and doesn't return then that is the inlet (suction) side.

PS. I would buy some carb cleaner and gently spray in the inlets of the carbs (sometimes pieces of the fuel lines get in there).
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Oct 24, 2009 | Ryobi 30 Cubic Centimeter Gas Brush Cutter

1 Answer

My gas lines cracked and i do not no where they go and i dont no how i go about troubleshooting it

  1. The line from the tank with the fuel filter goes to the bottom port of carb.
  2. The top port on the carb goes to the suction port of primer bulb (To tell which port is the suction port put your finger on one port and push bulb if the bulb collapses and doesn't return then that is the suction side).
  3. The outlet port of the bulb goes to the non-filter side of the fuel tank.
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1 Answer

I have to have full choke when I start bike, warm or cold.I've cleaned carb,s and passages seem clear. I,ve been running bike with air cleaner off, will that make a differance? GS 750 - 1978

your engine will **** in an average of almost a teaspoon of dust an hour of running without a airfilter on. this dust wears out the rings in your engine and everything else it touches in your engine. Lower compression and partially clogged jets lower the vaccum that your carbs pull in. Your bike should have a vaccum operated petcock that allows the fuel into your carbs. My guess is that you have low vaccum pressure. You might just need to replace a vaccum line or a petcock. Try pulling off the vaccum line from the front of the second carb and sucking on it until you see the fuel line fill up a little (don't worry, gas doesn't go threw the vaccum line so you won't get a mouth full of gas). Once you see the line about half full of gas or better. Try starting it up without the choke (engine should already be warm). The reason why I think this might be the problem is because when you choke a engine on these carbs, you increase the vaccum in the lines. Let me know if when it is warm, before you start it, if it already has about half of the gas line filled up. Good luck and let me know how it works out.

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4 Answers

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yes it is probably the pump or a problem in one of the fuel lines but i would bet more on the fuel pump or suction line into the tank. If you can take the line off going to the tank put it in a jug of gas and see if the pump will pump it to the carb or the engine will run.

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The linefrom the tank with the filter goes to the mixture inlet on carb. The fuel return goes to the suction side of bulb. The bulb outlet line goes to the tank. Hopes this helps

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1 Answer

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