I've got a problem with my 75 TR6. It generally seems to run fine, however,
if after driving a long distance at high (3000) RPM (i.e. highway driving),
if the clutch is pressed to allow a sudden return to idle, the car may (it
doesn't always do it) stall. No warning, just stop. It easily restarts,
and may not happen again for hours. If I lower the RPM's slowly by leaving
it in gear as I slow down, and remove it from gear only after nearly
reaching idle, it will never stall.
Any thoughts.
My guess is it has something to do with the vacuum. Could the sudden change
in vacuum pressure due to the sudden change in RPM, upset the timing
(advance or retard) enough to cause the engine to stall? The idle in
general is a bit irratic, usually it idles smoothly at about 800 after
warming; but then after driving long distances, the idle will slowly creep
up to about 1200. Could this be a vacuum problem as well?
Thanks for your help.
Ross
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