bluestar 2E 1985 fuel issues please help?!?!?

[mercuno]

It is the 0h 160 with walbro carb 631680. The previous owner removed a fuel pump and it gravity feeds from the tank. I can idle with it forever and I can rev it up by hand and I can even weld with it for about 2 minutes then she just dies. Do I need another carb or put on a new pump or new carb kit or what (seems like a simple setup and the few parts there are look fine.) ? I looked at the internals of the carb and she looks good. no rust in the lines bowl or anywhere. sounds like maybe she is filling the bowl up at high rpm and floods after a while but what does that mean? there is only one adjustment screw on it that I see and I have went both ways to the end and no result. any help out there please. I desperately need to fix this thing so I can get some work. thanks for looking. if you know what my problem is you can even call me 512-818-6882 email [email protected]

[DDA52]

I don't remember my Blue Star having a fuel pump. Seems like it was gravity fed all the way.......but then I sold it 21 years ago.

[shortarc]

Don't know if this will help or not, but it sounds to me like its running out of fuel under load, if so there is a little screen in those carbs that likes to plug.

This picture shows where it is.

http://www.muller.net/mullermachine/docs/walbro1.html

[Keyster]

I would check to see that the fuel tank is vented.
If the vent is clogged it may not let the fuel flow at higher power levels and you run out of fuel with a full tank.
Try running it with the gas cap loose.
Be very careful about fuel spills and fire!

hth
K

[mercuno]

I would check to see that the fuel tank is vented.
If the vent is clogged it may not let the fuel flow at higher power levels and you run out of fuel with a full tank.
Try running it with the gas cap loose.
Be very careful about fuel spills and fire!

hth
K

k Im gonna try that cuz I did tighten the cap right before we started welding with it for the first time. That will make me feel pretty silly if it works. haha

[mercuno]

HAHAHA well I loosened the fuel cap and it ran a lot longer then there is a screw to allow the fuel to flow from the bowl and I just opened it a little more and it ran like a champ. that saved me about 130 bux on a walbro carb. thanks soooo much for all your help guys.

[Keyster]

If the gas cap vent is the problem, I would repair or replace it.
Running with a loose gas cap is not a good idea.
I would hate to burn up a welder for the price of a gas cap.

K.