Quote:
Originally Posted by undy
It sure sounds like you have an intermittant loss of spark problem. That could account for the tach needle fluctuations too. As you said, it could be the coil, distributor cap or your distributor pick-up. I had a a Mallory uni-light many years ago and can remember having to wipe off the distributor's pick-up light every now and then due to ozone deposits. It would cause it to miss if the lens got cloudy.
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I put an ohm meter on each plug wire, good there. Took the cap off and cleanded each contact as well as i could, no change.
It's strange that at idle the tach jumps all over the place, sometimes as high as 4-4.5k rpm, all while just idling. You can see/feel the misfire at idle as well.
Very strange.
I'm at a point where i'm either going to build a 347 stroker or do a 351 stroker so unfortunaltly i can't replace the distributer until i know what kind of build i'm doing. I need a quick bandaid.