Motor kicks back with NGK xi55 plugs
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Motor kicks back with NGK xi55 plugs
For some reason my motor kicks back and fights against the starter with NGK iridium spark plugs. I went ahead and changed the plugs to copper NGK's and the motor no longer kicks back against the starter. It was fighting the starter to the point that it even broke a starter into pieces. I was told the opti is the problem, but why doesn't it do it with the copper plugs? The opti is a MSD unit with under 4k on it, do you think this is the problem?
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The plug wires were on correctly; it also did this when this motor was in my other car with iridiums, I installed new iridiums and wires when I swaped the motor into my Trans am and I still had the kick back. But Today I got my answer; I have also been feeling a really slight miss at idle, today I decided to run the carp out of the car. I went wot a few times then went down the freeway for 30mi slowing down and speeding up; then when I exited the freeway and went wot one last time I got my answer. The car finally completely died on me; I have fuel, but I have no spark. So now all I have to do is fix it and I should be good to go. Now I took the coil wire out from the opti and pointed it close the the TB; no spark is exiting the coil. Would a bad opti cause the coil not to fire at all? What could cause the coil not to fire?
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The LTCC won't fix your problem. You still need the high and low resolution pulses from the optispark. The LTCC only replaces the high voltage portion of the opti (the cap and rotor). It is not an optispark alternative. The only TRUE alternative is the LSX conversion, which is around $2000.
The earlier MSD optisparks seem to be riddled with problems, so don't be surprised if the MSD is the culprit.
I would just recommend a replacement AC Delco optispark.
The earlier MSD optisparks seem to be riddled with problems, so don't be surprised if the MSD is the culprit.
I would just recommend a replacement AC Delco optispark.
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The LTCC won't fix your problem. You still need the high and low resolution pulses from the optispark. The LTCC only replaces the high voltage portion of the opti (the cap and rotor). It is not an optispark alternative. The only TRUE alternative is the LSX conversion, which is around $2000.
The earlier MSD optisparks seem to be riddled with problems, so don't be surprised if the MSD is the culprit.
I would just recommend a replacement AC Delco optispark.
The earlier MSD optisparks seem to be riddled with problems, so don't be surprised if the MSD is the culprit.
I would just recommend a replacement AC Delco optispark.
Last edited by henry172; 12-26-2010 at 10:31 PM.
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I diagnosed the car today and I have some good news. It was not the opti, it was a blown ignition fuse. I had my electric water pump connected to the hot wire for the ignition fuse under the hood; it was sucking up too much power from the ignition causing my problem at idle. I am going to install a switch for the water pump and its own separate power supply tomorrow; this should solve all of my problems.