FJ 55 Running rich

[JaredKnecht]

My FJ 55 is running so rich it just stalls out instead of idles.

It has a weber carb. The choke is all the way open instead of closed. And i pulled out the spark plugs and they are black and burnt. Recently rebuilt the carb, float bowl seems fine, jets fine, might have set the idle screw wrong. But what could i do to lessen the amount of fuel being dumped into the engine. Or I guess increase air intake?


Thank you so very much. Trying to bring an old 71 back to life.

 

[Pin_Head]

How do you know it is running rich? Black and burned plugs is not evidence of rich. If you smell fuel, it is either due to a leak or misfiring. You can't smell a rich mixture. Start by setting the idle mixture and speed. It is indepenent of the running mixture.

 

[Solace in Solitude]

Why did you start a new thread, Jared?

We answered your OTHER THREAD

If you are finding 5 gallons of fuel in your crankcase, you really need to change mechanical fuel pumps before you destroy your engine.

 

[LAMBCRUSHER]

and get a trollhole carb. or stock aisin...but the pump is what the big prollem is, then the weber...I fought my weber for 3 years or more before I went back to a stock carb...

 

[ErikinSC]

SEARCH is your friend. FAQ has carb tuning help. I've got a Weber, took much advise from @Pin_Head and @Weber Sarge. Feel free to read two of my prior threads. (I'm on my phone or I'd add links.)

before you try to re-tune the carb - check the timing, points, and plugs. DONT ASSUME THESES ARE CORRECT!