From a point at sea, to the circles of your mind, this is hugh:


Could it be ...



Oh joy, oh glory, oh bliss...

Finally nailed it. Finally and permanently (notice my air of
confidence).

It was, in fact, due to a split inlet manifold gasket.

This was a surprise because I replaced that gasket when I took the
head off earlier this year.

I had checked for induction leaks right from the start of the problem
appearing, and then again more thoroughly when Tim suggested an inlet
leak. Today I checked a third time.

So I'm feeling a little foolish that I missed it before.

On the plus side, the car now idles better than it ever has before.

So thanks to everyone who has tolerated my incompetence and helped
with suggestions.


--

Stewart Hargrave

A lot faster than public transport


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