Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
Cant get new quadrajet to run
CamaroMan79:
My mistake it actually is in the inside hole.
CamaroMan79:
Ok I have doen some more troubleshooting today.
Sorry for the slow replies, I have been recovering my kidney surgery.
I talked to Sean at SMI and he told me to do a volume test. he said disconnet the fuel line fromt he carb and stick it in a jug. Start the car and let it run for 30 seconds which it should have enough fuel in the carb to do so. Shut it off at 30 seconds and measure the fuel output ot the jug. Said I should be getting a 1/2 gallon.
Well I did this and I am only getting 44 oz which is 20 oz short of a half gallon. This was with a straight fuel line off the fuel pump with no filter or regulator.
I hooked that fuel line up just like that to the carb with just a fuel gague hooked to the line. I didnt even have the in carb filter installed. I am getting about 7.5psi of fuel pressure.
At idle I can only get around 13:1 or so on my wideband O2. If I rev the engine in park the Wideband shoots towards lean (around 14-15) instead of getting richer and the same goes for if I put the engine under load going down the road it jumps to (15-16:1)
If I turn the fuel adjustment screw all the way in the engine doesnt seem like it wants to die. I also have the APT screw 2 turns out.
Still no luck.
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