Peter,
Intermittent problems are the worst to solve but it sounds like you've
covered the basics for fuel delivery which is a good start. Unless you've
actually checked the carb diaphragms for cracks or splits I wouldn't assume
that
they're okay. I also like the idea of a "lagging rotor" which someone else
mentioned. There should be no play when you turn the rotor by hand. Worn
rotors
(on the distrib shaft) can cause a symptom like you've got because the rotor
is not responding to a requested increase from the throttle when you go to
full throttle. I think the rotor may be in-time during partial throttle
(cruising) but when you go to full throttle and the distributor wants to
advance
the spark, the rotor can't keep up with the distrib shaft speed so it lags
behind and tends to keep the timing retarded just when you need advanced
timing
to match the increased fuel delivery for more power.
Swap the rotor for a good one but if you have a timing light, it would be
interesting to observe what the timing does when you quickly increase throttle
at idle. If your distrib is working okay and the rotor is okay, the timing
should increase when you blip the throttle.
Chip Krout
Delaware Valley Triumphs, Ltd.
Skippack, PA
1976 TR6 CF57822U
In a message dated 9/1/2008 5:48:42 P.M. Eastern Daylight Time,
peterara@msn.com writes:
The thing is it heals! and is intermittent!
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
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