help with distributor Please!!

[mootang]

how do you know if your distributer is bad?



here is what mine is doing.....

the arm on the rotor is rubbing the underneath of the cap and causing a nice plastic scraping noise. I put an old rotor on and it was even worse.

who's had this problem? and what was it.

I'm 99% sure that it is the distributer but i just want to make sure before I drop $300 on a MSD dizzy.

the only thing i'm worried about is if it has something to do with my cam having to much play. as far as i know the cam doesnt but it is one of my concerns.

thank you,

Scott

 

[SamSnyder]

Hmmm. I never heard of this. Can you borrow a distributor or get a junkyard one for cheap to confirm it is the distributor? If I had to guess, I would suspect that the shaft is being pushed upwards by the cam engagement, meaning either a worn (or mis-machined) distributor shaft or ditto for the distributor body. Or could the oil pump drive shaft be too long, or sticking up too high? Something seems to be forcing the rotor up against the cap. That's weird.