trevorchiro

Thanks Bruce, I will check that out and post results later.

Thanks xray, I will get to work on all of that and post the results later. Appreciate the help.

Please help!! Appear to have a fuel starvation problem in 71 240Z. Symptoms: Popping at higher RPMs. Popping with choke on. Popping during deceleration. Idles fairly well with no popping. When I try to accelerate from a dead stop the car sputters and wants to die. I have to push in clutch and rev up engine or put choke on in order to accelerate. Done so far: Did full tune up and then went to adjust carbs. First adjusted air flow with uni-syn. Second tried to adjust fuel mixture. Front carb always seems to be too lean. Fully unscrewed mixture nut (away from bottom of carb which is supposed to richen mixture) and engine wants to die immediately upon pushing in pin on bottom of carb. Rear carb not as bad. With fuel mixture nut fully unscrewed when I push in pin it slightly slows RPM's immediately but not to the point of killing the engine. From there I took apart and cleaned float bowls and Domes. Floats and jets seem to be in good condition. Pistons ride up and down smoothly in Dome and tapered pins don't appear to be bent at all. Also changed fuel filter. Could I have a weak fuel pump that is not allowing for enough fuel pressure in the lines? What are the symptoms of a weak fuel pump? If so why is only the front carb affected? Any help would be greatly appreciated and please bear with me as I am a novice.