French Trip...

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Post by philhoward » Sat Aug 10, 2019 3:23 pm

Not soo good - and I doubt an endoscope will be of any help as if the valve clearances are OK then it looks like a poorly piston..

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Post by gtcse8 » Sat Aug 10, 2019 8:12 pm

Could be a burnt valve, I have had a few in the past.

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Post by Rev Light » Sat Aug 10, 2019 8:18 pm

It will be interesting to see when I pull the head off. To be fair I have known about this for some time. When I first got the car and compression tested it some years ago number 4 was the lowest compression. And I have had some people comment that I have had a puff of smoke from the exhaust on occasion. I also know from when I did the valve seals that there is some damage to the casting on top of the head for this valve. I am just amazed that the engine still seems to run reasonably well.

I suppose it has got worse over the years and I have gotten used to it.


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