If everything else is ok and it is intermittent as you describe, it could be the MSD unit is starting to go bad. No loose coil connections or other wiring issues?
I'd go get an MSD Streetfire and swap it in to see if it is the MSD. (Or borrow one) But that is just me. 
__________________
Dennis
Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C
Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds.
|