> I have a Triumph Spitfire, it started to run like crap and quit, and will not
> start. I suspected valve problems, since I have had valve problems in the
> past, including a valve the broke and dropped into the engine resulting in a
> rebuild about 5-10,000 miles ago.
>
> Popped the valve cover and no broken rockers, all valves moving up and down,
> all valves fully closing so that the rocker was loose. There was no coolant
> loss suggesting a bad head gasket. Did a compression test, and #3 cylinder
> had zero compression, put some oil in the cylinder, still zero.
>
> Suspected a burnt valve - pulled the head, all the valves look fine, lapped
> them in all seemed to seal, all are moving freely in their guides.
>
> The are no obvious signs of piston problems, cylinders aren't marked.
>
> Head gasket seemed fine.
Well, I'd suggest re-checking your data. You've illiminated everything
with that check list....so obviously something was overlooked/misjudged.
Its easy to get stuck in these type of circles....
If all the valves are opening and closing....is #3 being held open all the
time?
(I'm not overly familiar with the details of Truimph's valve train...adjustable
rockers?)
Hole in the piston? ;) You didn't mention that one.....
Only thing that comes to mind that you didn't list....don't see how cam timing
could jump for a center cylinder, no matter how the valve train is set up.....
so I won't suggest checking that....
Ryan
rlangford@attbi.com
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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