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[GMCnet] Beside the Road Again [message #209637] Sun, 02 June 2013 15:24 Go to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
Senior Member
Well, here we sit, beside I-280 since 11:00 MDT. I don't think it's. vapor
lock this time.

We were moving from Applied GMC to a relative's home in San Mateo at about
65 mph when a short series of "pop-pop-pop"'s came through the cockpit
floor -- sounded like mild exhaust backfires. Then the engine ran fine
again. When I recovered enough from "...what th...!!!" to check the
instruments, there was no oil pressure -- down from 45+ psi. Fortunately
we were passing an area with a wide shoulder to park on.

Finding no visible explanation beneath the coach, I raised the hatch and
still found nothing. Since I still have the LOP switch protecting the
"pusher" pumps, I put a voltmeter on it and started the engine to a few
seconds -- no oil pressure.

It's been 2:15 since I called RVRoadHelp/Allstate (India). About 1:30 with
the first guy brought a promise of wrecker by 1:30 PM MDT. Followed
immediately by another Indian announcing that "...they can't do it
today...". He eventually found another service which promises to arrive by
2:00 PM (ain't gonna happen before 3:00).

Nope, the lifters never started to rattle -- I probably shut down <30
seconds after whatever the failure was. The only explanation I can think
of now is that the oil pump shaft broke, making thep"pop-pop...". We'll
just have to tear into it at JimK's and see. Any similar experience
reports appreciated.

KenH
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
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