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Jedi Hopeful
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Anyone know if low idle speeds can damage a Pertronix Ignitor unit?
Here's what I'm experiencing--car runs great (71 TR6) at 1200 rpm idle. I drop it down to 850. Runs fine for a few minutes, but then engine suddenly loses power and starts sputtering and popping. It isn't a slight loss of power--the car barely runs, as if only one cylinder was firing.
I did a bunch of debugging, including increasing idle speed again, and couldn't make the engine run smoothly--no change at all, still sputtering and popping with almost no power. Until I put a new pertronix unit in there--bam, works great again, at 1200 rpm idle speed.
So I drive around the neighborhood. Then pull over and decrease idle again to 850. About two minutes later, same thing--sputtering and popping with almost no power.
I do have a GP2 (streetable, mildly tuned) cam, and CR of 9.5. I wonder if the lumpy idle of the cam is causing trouble?
At this point I'm about out of ideas. Anyone experience this or have any ideas?
Here's what I'm experiencing--car runs great (71 TR6) at 1200 rpm idle. I drop it down to 850. Runs fine for a few minutes, but then engine suddenly loses power and starts sputtering and popping. It isn't a slight loss of power--the car barely runs, as if only one cylinder was firing.
I did a bunch of debugging, including increasing idle speed again, and couldn't make the engine run smoothly--no change at all, still sputtering and popping with almost no power. Until I put a new pertronix unit in there--bam, works great again, at 1200 rpm idle speed.
So I drive around the neighborhood. Then pull over and decrease idle again to 850. About two minutes later, same thing--sputtering and popping with almost no power.
I do have a GP2 (streetable, mildly tuned) cam, and CR of 9.5. I wonder if the lumpy idle of the cam is causing trouble?
At this point I'm about out of ideas. Anyone experience this or have any ideas?