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Engine stalling and hesitating while driving.

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Hi everyone, I am a new member and was wondering can some help me out with my problem. I have a 1983 280ZX coupe with 239,000 miles. I have a moderate stage II cam and great compression on all cylinders. The problem I am having is that while driving the car during acceleration or normal level driving the car wants to stall and hesitate. I can push in the clutch, rev the engine and then it corrects it self until it happens again moments later. The car runs, cranks great, and idles just fine. I have changed out the fuel regulator, fuel filter, new fuel pump, new fuel dampner, had the air-flow meter re-built, new distributor cap, rotor button, wires, and spark plugs, yet none of those things I have done has helped. I am thinking that I might have to drop the gas tank due to possible rust that might be restricting the fuel pick-up on the fuel sending unit. Can anyone give me any help with this ???



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This belongs in the forums, not the blog section. Start by checking your plug gap, and make sure you've using NGK's.

Next I'd look at the vacuum advance mechanism in your distributor, make sure it operates smoothly when you suck on the vacuum line.

California car? If so you might have a plugged catalytic converter. Unplug the oxygen sensor to relieve back pressure and try driving it, let it roar, and see if problem goes awayy.

Put a fuel pressure gauge inline, tape it to the windshield and go drive it and see if it's a fuel starvation problem. Quit throwing parts at it until you've got a DIAGNOSIS of what's really going on.

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