Gas pooling at the bottom of Carb.

[bama]

When I go to start it, I choke it and pull until it spits. When I push the choke in it won't even fire again. I pull the plug and it is totally wet. So is the top of the piston.

When I cleaned out the carb of this Jonsered 451EV, it was real clean. I used compressed air, checked the needle/seat, gaskets, fuel lines, and they all seemed really good.

Where should I look first? I am first to admit that I could have missed something. Since everything was clean and plyable, I didn't consider buying a new carb kit.

 

[West Texas]

I had similar problems with an 044 carb, even after putting in a rebuild kit; finally replaced the carb and it runs like a whiz. Hope a rebuild kit works for you, that's a cheaper solution.

 

[HiOctane]

Hmm,could be ignition problem too.You could try this,dry the spark,close both needles in and put a bit of gas directly in the carb.If she burns that,it means your carb is the problem,if not starting,then ignition is bad.

 

[Max]

Outstanding!!! It is advice like that from HiOctane that makes this place a
great forum! There...I just learned something for the day!

 

[bama]

Hmm,could be ignition problem too.You could try this,dry the spark,close both needles in and put a bit of gas directly in the carb.If she burns that,it means your carb is the problem,if not starting,then ignition is bad.

Good idea. I will try that to isolate between fuel and ignition. Thanks.

 

[daemon2525]

I am sure you meant that you used the air compressor while the carb was apart, However, I feel this is a good time to tell my little story.

When I was first learning to work on chainsaws, I would blow 100 PSI air compressor into the fuel line connections of the carb. I soon realized that you can destroy the diaphrams this way.

 

[bama]

I am sure you meant that you used the air compressor while the carb was apart, However, I feel this is a good time to tell my little story.

When I was first learning to work on chainsaws, I would blow 100 PSI air compressor into the fuel line connections of the carb. I soon realized that you can destroy the diaphrams this way.

You are correct. I did it with everything apart.

 

[bama]

I turned the Low adjustment to about 1/4 turn and it runs pretty well. If I open it up, it floods out. It even runs with the Low adjustment closed.

What does this mean? How is that much fuel getting in if the low is off or almost closed? I left the high at 3/4 open.

 

[CaseyForrest]

I had the exact same problem. Make sure you inlet lever is adjusted correctly. If the inlet lever wont allow the needle to close the fuel will continue to run through the low side even when the saws not running.

 

[bama]

I had the exact same problem. Make sure you inlet lever is adjusted correctly. If the inlet lever wont allow the needle to close the fuel will continue to run through the low side even when the saws not running.

Thanks! I will check on that the next time I can get at it. I didn't check it when I cleaned it. Maybe I bent it in cleaning.