Hello all. I got tired of scraping the carbon off of #6 plug and decided to
run a compression check on the beast. Cylinders #1-#5 were all between
130-135 psi, but #6 was only 70! A squirt of oil into #6 hole and a recheck
gave only 80 psi. What is the most likely problem here? Broken ring? Worn
ring? Valves/valve guides? The car runs fine, but is very smoky at initial
startup (black smoke, not grey), little or no smoke after driving a while.
#6 plug gets completely covered over with carbon after about 500 miles and
won't fire. Any suggestions would be appreciated. Thanks.
Gary Morrow, 72 TR6
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