Thread: Timing???
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Old 08-21-2008, 02:17 PM
EricB EricB is offline
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Join Date: Jul 2004
Boat: 77 S&S, 1983 S&& PS, and now a 98 Anniversary S&S LT1 PS
Location: St. Paul, MN & Balsam Lake, WI
Posts: 738
Watch the timing w/ a good timing light as you rev the engine, and watch it as you drop the rpms also. Your timing should advance smoothly with rpm increase and drop back smoothly when going back to idle. If it jumps around radically on the decel portion of the test (according to the marks) then you could have slop in the timing chain and gears, which would result in an intermittent slow crank situation when hot (over-advanced at shut-off). Should not vary much more than 3 deg. I believe.
Generally, the engine (once it starts with a chain issue) will run like crap until you shut it off, then a restart it may run fine. It seems like an intermittent problem.
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