what caused all this?

[The Deuce]

Originally posted by Clark Rodgers
I guess the big question is was this doing this before the fan change? Or did this just start happening on it's own?

The next thing I would try is sticking some 93 octane in there and see if it makes a difference. Running at different temperatures could have some effect, you might look and see how the plugs look.

We can't get 93 out here. I would look at your rotor, as it sounds like something going on when you were messing with the timing. Dwell, or something could be screwed. That might give you a problem in a window or rpm.

I could be talking out my arse though, as I have yet to rip into an old dist.