Fordnatics List Archive

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Mail From: (email redacted) (Frank Marrone)

George,

I have a '79 brand B vehicle that I use as a emergency backup
and because I really can't stand the thing I do very little
maintanace on it. Occasionally the Idle quality becomes real
bad and a few of the cylinders won't fire (V8). When I first
got the car I did a little diagnostic work and determined that there
was leakage past the intake valves in the bad cylinders. I found that
if I use one of the additives that you mentioned (including the
cheveron product) for two or three tanks of gas the problem goes away.
After a 1000 miles or so it comes back and then I run another couple
of tanks with the additive. Truthfully I was real suprised that
the stuff worked so well, at least in this case. I understand that
intake valve deposits are pretty common on the circa 1980 "lean burn"
engines and engines with port fuel injection.

Frank Marrone at (email redacted)