Back to the list with my Carb problems.
Recap:
I have a 76 TR6 with 8,000 original miles, I recently had my carbs rebuilt
to cure very rough acceleration from a stop (car ran fine at cruising
speed).
After the rebuild, the car ran fine from a stop, but would run a little
rough (very slight shudder or pulsating-pulling feeling and a little garble
in the exhaust) at cruising speed, once warmed up, between 1500 and 2500
RPM. Car runs great up to 1500 RPM and above 2500 RPM.
At the suggestion of the list I replaced the rotor and distributor cap with
no improvement.
The car went back to the mechanic who diagnosed it as too rich a mixture
when the carb is at maximum vacuum (at 1500-2500 RPM). He then adjusted the
trimmer screw near the temperature compensator by turning it in a full turn.
He commenting that there is a lot of adjustment left, so drive it and if it
isn't better, come back and he'll adjust it more. Last night I decided that
it would be better if I made the adjustments while I was test driving the
car. I went in a half turn at a time and then back out a half turn at a
time. I could not get the engine to run just right.
My questions:
What is the correct point to start from with the trimmer screw (since I
probably want to go back to point A and see what happens)?
Is the trimmer screw the correct thing to adjust for this problem?
Shouldn't the mixture be adjusted through the top of the dashpot (or is a 76
TR6 not adjustable)?
Any other suggestions?
Jack Radley
76TR6
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