Wont prime! HELP

[Heavy Chevy]

I ran the Monster a few weeks ago and it ran fine.. I went to try to start it Today and it wouldnt even prime.. I can see bubbles in the fuel tank when I press on the primer but it will not suck the fuel through the line back to the carb..

I tried blowing through the fuel line and the lines are good..

Everything is stock..Any suggestions??

 

[sperera]

can you see any fuel going through the return line?

if both lines arnt blocked it must be carby related.

 

[Heavy Chevy]

Well one of my lines is clear.. The one that goes to the top of the carb near the primer..

Ther other is black. This one goes to the bottom of the carb.. This one seems to have a filter or something attached to it on the tank..


When I prime it I see bubbles from the clear line but it wont pick up fuel ..

 

[mik3y]

did u leave old fuel inside the truck for a long period of time?

 

[Heavy Chevy]

No actually I ran it all out before I let it sit.. Ive never had this issue before..

Whats the purpose of the black line in the tank?

 

[sperera]

the black line is the fuel line, there will be a clunk filter on this, the yellow line is return line, when you prime it and carby is fueled you should see excess fuel go into the return (yellow) line.

 

[Heavy Chevy]

Oh ok so I was pumping the primer looking for fuel to pickup through the clear line when actually the fuel comes up through the black line.... and the access fuel goes back down through the yellow line to the tank

Is that correct?

 

[pipeous]

yes that is correct, so it's priming fine if it goes through...the clunk (filter thing) is what draws the fuel into the carb. it seems opposite to pump and have fuel go to the tank but that's corrct

 

[Heavy Chevy]

Ok that makes sense.... So why wont it pick up fuel all of a sudden?

 

[voo2doo]

Chevy,this is an old one.
The clunk line should be at the bottom of the carb and the clear at the top. It sounds as if its air locked,take your fuel cap off and try it.
J

 

[Heavy Chevy]

I tried that also.. I even took the carb off and try possibly every possible way .. filter off, switch lines etc...

It seems the primer is building pressure in the tank but the fuel line isnt sucking it up at all.. Is this a primer issue or a carb issue?

 

[pipeous]

so you took the line off the bottom of the carb and blow into the tank and it's clear? bubbles etc.? and the return line is clear, then it's either the primer or the carb. open the carb butterfly with the throttle, hook a piece of fuel line on the bottom inlet of carb and try blowing through. if it's plugged, you might have picked up something that is blocking the jet... it's possible the diaphragm under the primer has let go, or maybe the bulb itself has a crack in it?

just a question, is the plug getting wet?

 

[Heavy Chevy]

Thanks guys.. I got that primer issue resolved but now Im having a idle issue..

 

[voo2doo]

Could be a insulator block or a blown gasket,either way if you have erratic idling its down to an airleak.
J.

 

[dwarfy]

Thanks guys.. I got that primer issue resolved but now Im having a idle issue..

What was the problem in the end?

 

[voo2doo]

What was the problem in the end?

Don't kbnow mate.
J