On Thu, 2 May 1996, Allen W. wrote:
> Have HIF4 Carbs on my 74-MGB. Has rebuilt engine with 8.8:1 pistons and
> upgraded cam. Runs great all the time and idles great most of the time.
> Can set idle @800 rpm and it will stay there for some random period of time.
> Then it will drop to <500 rpm and nearly quit running. This usually occurs
> after warmup. Floats and needles seem OK(carb rebuilt < a year ago). Can't
> find any vacuum leaks. I need some suggestions. Thanks to all.
>
Is your clutch release bearing O.K. ?? I have had the exact same
problems with my 73 BGT, and this was the cause. Do the revs. drop
noticeably with your foot on the clutch and then stabilise when the car
is idling in neutral, no foot on the clutch ???
G-MAn
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