> What I really
> don't understand is how #3 got bad too. I didn't touch #2, 3
> and 4 and they were prefect before?
So obviously a new problem. With that much oil on the plug and "tons" of
smoke, I'm going to guess the piston broke somehow,
perhaps a manufacturing defect. Normally oil smoke is blue, but the blue color
isn't always obvious, especially if the cylinder
isn't running at all.
But you won't know for sure until you've got it apart. Personally, I wouldn't
bother with even a compression check, let alone leak
down. Whatever the problem is, will be obvious with the head off and the
piston out.
Don't forget to check the ring end gap. New rings are often supplied slightly
oversize, even when included in a liner set. And a
too-tight ring can lead to a broken piston without making any obvious noise.
Lots of other possibilities of course, so just one
more thing to check.
-- Randall
** triumphs@autox.team.net **
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