Eric---It's odd that all cylinders read so close with the issue you have
with #1. Still, I'd confine the search to this cylinder. It could be
it's not firing as steadily as the others, and shows up with more soot.
You can also run a hotter plug in this hole while you continue to look.
Check the valve lash on #1 compared to the others.
Do a leak-down test, to see if anything shows up.
Dick
From:
ehenningsen@triad.rr.com(Eric Henningsen)
Having difficulties with poor combustion on the no. 1 cylinder on a 76
TR6. Have replaced plug wires, cap, rotor, reinstalled points (was
running petronix unit), and still the no 1 plug runs sooty black. Other
five plugs are running a nice light tan color, so I believe the carbs
are adjusted ok. Compression on all cylinders is between 128-130. This
car is basically a stock setup, although the air pump has been removed.
Anyone have thoughts on next steps to correct??
Thanks,
Eric
Kernersville, NC
76 TR6 BRG
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