I need some help to determine why my 77 B spark plugs are fouling. First, I
just switched from a Weber to twin SU's (HS-4's). The plugs were already
fouling (black soot). The choke was sticking open on the Weber and I already
had a complete SU set up ready. Changed the carbs, but still getting black
fouling (not oily). Since I have an electronic ignition, thought it might be
a problem with the ignition. Put on a new coil and new ignition amplifier
module (was for another B of mine). Got those changed and for the first few
minutes, the car accelerates and idles great, but as soon as the B gets up to
temperature, it cuts out, and fouls the plugs. I am using Champion NYK9
spark plugs. I hesitate to adjust the jets on the SU's, only because I took
them off of a B that was running great.
Please let me know what else I should consider looking at.
Brenda McCarty
1977 B (daily driver)
1979 B (my husbands daily driver)
1969 B (my project car that will be street legal/race prepared-will be
finished by October)
1969 B (project car-to be restored for my parents for their wedding
anniversary next year).
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