In the 3 degree heat last Sunday, I discovered that I have no
compression in my #2 cylinder.
I have the original 1975 18V block, with an earlier head. I have no
idea what specific year the head is for, but it lacks air injection
ports. The previous owner told me that the engine was rebuilt with
valves and seats that were compatible with unleaded fuel.
I pulled the head last night (it was warmer yesterday, highs around
20), and my problem is the exhaust valve is not closing. I hope to be
able to pull it out tonight and look at it, but I have to come up with
the tools to do so before I can. If the valve is damaged, is it false
economy to just replace the one, or should I look at all 8 before
putting everything back together.
The engine is starting to show some signs of wear (but no leaks yet),
so I plan on rebuilding everything in another 30000 miles anyway.
Until Sunday, the car ran perfectly, with 120 lbs of pressure in all
cylinders.
Also, a special word of thanks to all those that participated in a
"block heater" thread around 1999, I will be installing one of those
too, based on the advice I read there.
--
Aaron Whiteman -- http://www.wsu.edu/~aaronpw/MG/
'75 B (red for now), almost mostly working
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