Quote:
Originally Posted by MalibuSSwagon
Tip in issue? Like others said, could be an issue with your carb.
My personal experience with this issue you describe is on my 1986 305. When I did a teardown to install a new cam and the TPI, I found an extremely worn original timing chain. That would explain why my timing would sometimes jump around when I was setting the ignition timing.
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I don't believe these engines have timing chains, just gears. But I don't see any issues with my timing, it seems to set easy enough and I see it move when I open the throttle.
I don't see any difference in movement with vacuum connected or not, but I'm not sure I would either. Haven't tried driving without vacuum on the dist.
Carb or Dist., and now heat riser, seem to be the only ideas floating around here and I'll just end up taking a stab at one unless more come up.
Adam