dannyvp
SILVER Star
I've been messing with this issue for over a year now, and I've finally had enough.
2F engine - desmogged - City Racer Carb
My Issue:
Carb will not tune and the truck seems to run lean. At 70% peddle and higher the truck runs ok, at lower RPMs (under 2500) and peddle depressed around 70% or less the truck stumbles a lot. It runs horribly which includes low power and lots of bucking or surging. Sometimes when you let off the gas you will hear a backfire.
What Ive done:
Otramm style carb tuning. When you adjust the fuel screw on the back of the carb the RPMs do not increase. You have to adjust the idle screw to adjust the RPMs.
Timing is set to ~11.
Unhooked the charcoal canister because I had pressure in the tank.
Had a new manifold gasket put on because of a vacuum leak. The vacuum is around 20-22.
Reset carb and started over several times. (adjusting screws back to normal)
New fuel filter
New fuel cap
New fuel pump and gasket
Carb has fuel in the site window, Fuel filter has fuel flowing through it.
Engine idles great.
Ideas on how to fix this?
2F engine - desmogged - City Racer Carb
My Issue:
Carb will not tune and the truck seems to run lean. At 70% peddle and higher the truck runs ok, at lower RPMs (under 2500) and peddle depressed around 70% or less the truck stumbles a lot. It runs horribly which includes low power and lots of bucking or surging. Sometimes when you let off the gas you will hear a backfire.
What Ive done:
Otramm style carb tuning. When you adjust the fuel screw on the back of the carb the RPMs do not increase. You have to adjust the idle screw to adjust the RPMs.
Timing is set to ~11.
Unhooked the charcoal canister because I had pressure in the tank.
Had a new manifold gasket put on because of a vacuum leak. The vacuum is around 20-22.
Reset carb and started over several times. (adjusting screws back to normal)
New fuel filter
New fuel cap
New fuel pump and gasket
Carb has fuel in the site window, Fuel filter has fuel flowing through it.
Engine idles great.
Ideas on how to fix this?