GX390 carb issue-VIDEO

2kdime

New member
Funny thing Bob, EC distributing told me to cap it.

The coil will fix the problem, but having a gas tank with a return nipple is nice.

No reason not to have it hooked up.

Should make tuning easier and less stress on the pump.
 

fredjones

New member
Any help is appreciated on this guys

Timing is fine

Poople told me this video says lean

Put the biggest jet they make for the carb in it and it did the same thing

Dies when we give it gas here.

I put a smaller one in it and it'll rev up to about 4500 and levels off. Obviously it needs to go higher

Hmmm

First running video

http://s81.photobucket.com/user/2kdime/media/VIDEO0022.mp4.html

you know...I have been thinking about this....check your intake valve....I will bet it is not seating right? have you checked it for piston clearence?
 

Bob Drye

New member
If the pressure in the upper fuel chamber is not relieved by the return hose you over pressure the lower chamber and deminish it's ability to regulate fuel.



Funny thing Bob, EC distributing told me to cap it.

The coil will fix the problem, but having a gas tank with a return nipple is nice.

No reason not to have it hooked up.

Should make tuning easier and less stress on the pump.
 

Method racing

New member
Any help is appreciated on this guys

Timing is fine

Poople told me this video says lean

Put the biggest jet they make for the carb in it and it did the same thing

Dies when we give it gas here.

I put a smaller one in it and it'll rev up to about 4500 and levels off. Obviously it needs to go higher

Hmmm

First running video

http://s81.photobucket.com/user/2kdime/media/VIDEO0022.mp4.html
HI there I c its a very old post. I'm trying to fit a sbn 38 carburator on same setup. Siting with the same probleme. Could you sort out the probleme and was it running 100 perc.
 
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