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[GMCnet] update on old engine problem [message #247396]

Mon, 14 April 2014 13:28

Messages: 1262
Registered: September 2009

Karma:

Senior Member

finally got to take a look at the number 8 bearing on our old engine and thought
I'd post an update here. The only sympton we had was a strange rattle that only occurred
under some load conditions. It started about an hour after my better half decided to
see what wide open throttle would do on a freeway on-ramp (scaring the bejeesuz out of me;
felt like I was in the space shuttle at take-off). This was last year, and we've since
replaced the engine with an S&J rebuild.

The noise kinda sounded like a big nut rattling around in a metal pan.
The oil pressure was fine, and leakdown and compression tests didn't show a problem.
An oil analysis only showed somewhat elevated aluminum. Grounding the number 8 spark plug wire
made the noise go away. This engine only had about 12K miles. Looked like a decent clean
rebuild and the radiator was supposedly replaced at the same time, but somehow a piece of
crud clearly got in there.

The amazing thing is we were able to make it home (~500 miles) without more damage:

http://www.gmcmhphotos.com/photos/member-galleries/p54262-engine-noise-was-numbe.html

http://www.gmcmhphotos.com/photos/member-galleries/p54261-engine-noise-was-numbe.html

Karen
1973 23'
1975 26'
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Karen 1975 26' San Jose, CA

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[Message index]

		[GMCnet] update on old engine problem By: KB on Mon, 14 April 2014 13:28
		Re: [GMCnet] update on old engine problem By: roy1 on Mon, 14 April 2014 14:03
		Re: [GMCnet] update on old engine problem By: James Hupy on Mon, 14 April 2014 14:45
		Re: [GMCnet] update on old engine problem By: Gary Berry on Mon, 14 April 2014 15:25
		Re: [GMCnet] update on old engine problem By: KB on Mon, 14 April 2014 17:01
		Re: [GMCnet] update on old engine problem By: KB on Mon, 14 April 2014 17:16
		Re: [GMCnet] update on old engine problem By: roy1 on Mon, 14 April 2014 20:40
		Re: [GMCnet] update on old engine problem By: Bob de Kruyff on Mon, 14 April 2014 20:42
		Re: [GMCnet] update on old engine problem By: roy1 on Mon, 14 April 2014 23:55
		Re: [GMCnet] update on old engine problem By: Bob de Kruyff on Tue, 15 April 2014 10:53
		Re: [GMCnet] update on old engine problem By: James Hupy on Mon, 14 April 2014 17:18
		Re: [GMCnet] update on old engine problem By: Ken Henderson on Mon, 14 April 2014 17:18
		Re: [GMCnet] update on old engine problem By: JohnL455 on Mon, 14 April 2014 21:18
		Re: [GMCnet] update on old engine problem By: JohnL455 on Tue, 15 April 2014 08:32
		Re: [GMCnet] update on old engine problem By: A Hamilto on Tue, 15 April 2014 10:30

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