Didn't expect to spin a bearing...

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frank wight - 21 Dec 2005 19:30 GMT

Hiya,

I started up my 4 cylinder 151 c.i. pontiac Iron Duke engine after
letting the
car sit for a year. It has 71,000 miles on it.

My procedure was to install a freshly charged battery and just let the
engine
keep cranking to lubricate it. The engine cranked
for over a minute before it started up on its own and then disaster
struck.

Some really nasty clanging greeted me almost immediately. I turned it
off and let it sit for five minutes and then tried again. No good
news, just
more banging and racket. I have never experienced such an engine
failure as this. The engine was tight I thought.

Next month I'm going to pull the head off and see if there is debris
caught in the value or something. Any imput on this experience
would be appreciated.

mrfrankwightdec2005

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Shep - 21 Dec 2005 20:54 GMT

I'd pull the pan down first and look for metal in the pan, it sounds more
like a lower end issue.

> Hiya,
>
[quoted text clipped - 19 lines]
>
> mrfrankwightdec2005

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Andrew Szafran - 21 Dec 2005 21:42 GMT

Could be a snapped valve spring due to corrosion pitting from the car
sitting a long time. Hopefully the valve hasn't dropped down enough to
contact the piston - if it didn't, it should be an easy fix. Yes, a
broken valve spring will make a hellacious racket. When one went in my
Volvo, the mechanic at first said "thrown rod."

-Andrew

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