Just to be sure, put your timing light on it and drive it into the misfire situation with the timing light in operation. Also, check the continuity of the pickup coil as these do not last forever and are cheap ($15-$25) to replace.Check all connections and make sure that it really is getting 12volts all of the time.
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Ignition Miss Help
I finally got my car back together. It was apart for 1 and a half years. I redid a lot of the wiring and rebuilt the motor. The problem is that the engine has a severe miss (breaks up very badly, all cylinders) between about 2300-2900 rpm. It is definately ignition related I feel. The tach need goes crazy when this happens. Below 2300 it is fine and when the engine hits 3000 rpm the problem completely disappears and runs fine. The engine is a sbc with HEI distributor (81+ model without mechanical advance, the engine has an aftermarket efi system which controls timing). The timing is set ok, the rotor is indexed ok. I did take the ignition module in the distributor to the auto parts store and they checked it and said it is ok. I don't know if their test could catch this problem.
I did accidentally hook the power wire for the distributor to the tach output and put 12v to it. I wouldn't think that would damage the magnetic pickup.
Could this be the module or the mag. pickup.
Any help is truly appreciated.
I did accidentally hook the power wire for the distributor to the tach output and put 12v to it. I wouldn't think that would damage the magnetic pickup.
Could this be the module or the mag. pickup.
Any help is truly appreciated.
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