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| [GMCnet] Re: Cleaning the oil pump screen without removing the pan [message #368039 is a reply to message #368038] |
Wed, 15 December 2021 16:41   |
GMCWiperMan
Messages: 1248
Registered: December 2007
Karma: 1
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Senior Member |
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Greg,
Thanks for helping that obviously automotive-ignorant new GMCer. And for
letting us know the results. He'll probably make it to Raleigh OK, but as
you suggested, he'll probably need to have the engine rebuilt before long.
Hope he takes your advice -- and finds a good mechanic to learn from.
Ken H.
On Wed, Dec 15, 2021 at 5:15 PM Greg Crawford
wrote:
> Okay, here's the update. He arrived today about 11:15. It did not sound
> bad, except for some exhaust leaks. It's a 76 Glenbrook with 93,000 miles on
> it. The first thing we did was remove the oil pressure sender and plumb in
> a mechanical gauge. It took a bit for the black looking oil to spiral up
> the plastic tubing, but it did, and hit about 15 psi. I mentioned that the
> oil looked really black for having just been changed. He replied "But it
> looks really clean on the dipstick" and pulled out the transmission
> dipstick to show me. I gently informed him that the engine oil dipstick was
> up
> front under the driver's side hatch. I went out there and pulled the
> stick. No oil showing. He was very upset that he had paid someone to change
> the
> oil (in Iowa, 800 miles ago) and they did not. He had mistakenly been
> checking the transmission. Finding it low once, he added a quart of engine
> oil
> (out front, in the correct place). We all know how the transmission level
> fluctuates between running/not running/sitting. I had some new oil of
> various viscosities and I dumped in three quarts. Now it was about a half
> quart low. Fired it up, and low and behold! We have about 30 PSI at idle
> rising to 45 at about 2500 rpm. No unusual engine noises. We ran it for a
> bit, then drained the oil, changed the filter (A FRAM!), primed the new Wix
> filter, and dumped in five quarts of Mobil 1 10W30. Oil pressure is still
> good.
> I cut open the Fram, and found a lot of grit in the bottom of the filter
> that appears to be ferrous metal, since a magnet attracts it. I showed this
> to him, and told him to plan on an engine rebuild in the near future.
> I next observed that the radiator overflow reservoir hose was missing. I
> found it laying nearby, cracked and brittle. We installed a new hose,
> clamps,
> and added about a half gallon of antifreeze mixture to top off the
> radiator. We put a screw in one of his T skirts that was swinging in the
> breeze. He
> said he had good brakes, and the people who were supposed to have changed
> the oil had put new brake lines on it and bled the brakes, and he was happy
> with the brake situation. It doesn't miss going down the road, and runs
> okay. He said that it wouldn't go much over 65 or 70 going up some of the
> hills coming into East Tennessee. Since he was loaded up with stuff from
> his house for moving, I told him it was probably fine. So I asked if he
> needed anything else, wished him luck and sent him on his way to Raleigh.
> I hope everything goes good for him. That's my story. Thanks everyone for
> exercising the gray matter in our speculation. When he said it was full of
> oil, I had to take him at his word until it got here.
> --
> Greg Crawford
> KM4ZCR
> Knoxville, TN
>
> "Ruby Sue"
> 1977 Royale
> Rear Bath
> 403 Engine
> American Eagle Wheels
> Early Version Alex Sirum Quad bags
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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| Re: Cleaning the oil pump screen without removing the pan [message #368078 is a reply to message #367845] |
Fri, 17 December 2021 09:42 |
Greg C.
Messages: 224
Registered: October 2019
Location: Knoxville, TN
Karma: 0
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Senior Member |
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Thanks all, for the input. The good news is that he made it all the way home to Raleigh, 325 miles from here, without any issues at all. I was holding my breath as I could see all of the 1976 vintage parts under there that I have replaced on mine. Tilerpep here on the forum is local to him, and has asked me to send him contact info, so he will have someone close by for advice.
Greg Crawford
KM4ZCR
Knoxville, TN
"Ruby Sue"
1977 Royale
Rear Bath
403 Engine
American Eagle Wheels
Early Version Alex Sirum Quad bags
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| Re: Cleaning the oil pump screen without removing the pan [message #368083 is a reply to message #368078] |
Fri, 17 December 2021 14:06 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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Greg C. wrote on Fri, 17 December 2021 10:42Thanks all, for the input. The good news is that he made it all the way home to Raleigh, 325 miles from here, without any issues at all. I was holding my breath as I could see all of the 1976 vintage parts under there that I have replaced on mine. Tilerpep here on the forum is local to him, and has asked me to send him contact info, so he will have someone close by for advice.
Greg,
That is all real good news for the community.
I hope Tyler can talk him into joining the real GMC forums (either) and Tidewater Crabs. He can use all the help he can get.
That is why many of us are here.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| [GMCnet] Re: Cleaning the oil pump screen without removing the pan [message #368113 is a reply to message #368083] |
Sat, 18 December 2021 12:38 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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I am glad I followed this issue and finding out about reverse flushing.
Remember hearing about that trick many years ago, but it shows you , you
cannot recall all these tricks.
I have heard of people leaving rags inside the valley and the rag was
worked down into the oil pan and drawn up into the screen, but not Carbon
residues.
On Fri, Dec 17, 2021 at 12:06 PM Matt Colie wrote:
> Greg C. wrote on Fri, 17 December 2021 10:42
>> Thanks all, for the input. The good news is that he made it all the way
> home to Raleigh, 325 miles from here, without any issues at all. I was
>> holding my breath as I could see all of the 1976 vintage parts under
> there that I have replaced on mine. Tilerpep here on the forum is local to
> him,
>> and has asked me to send him contact info, so he will have someone close
> by for advice.
>
> Greg,
> That is all real good news for the community.
> I hope Tyler can talk him into joining the real GMC forums (either) and
> Tidewater Crabs. He can use all the help he can get.
> That is why many of us are here.
> Matt
> --
> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
> GMCES
> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
> Brakes with Applied Control Arms
> SE Michigan - Near DTW - Twixt A2 and Detroit
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Re: Cleaning the oil pump screen without removing the pan [message #368122 is a reply to message #368113] |
Sat, 18 December 2021 16:35 |
Ernest Dankert
Messages: 133
Registered: May 2007
Location: Ogden, New York
Karma: 1
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Senior Member |
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Well today I can post.
My comment on things sucked into oil pickups. A 1968 Jag XKE owned me, and on engine tear down I found the oil pump picked up a cotter pin (from the con rod bolts) and split apart. There was no suction screen but a complex baffle system to limit oil movement in the 3 gallon sump.
Had an olds 455 in the shop and the suction screen was pretty clogged with carbon chunks. Source unknown.
1977 CSB 350, leaky rear main seal, rear main cap cocked from two hardened dollaps of dried sealer, there were chunks of cam and lifter shrapnel in the bearing seat split. Why the bearing didn't spin or why the main or con bearing didn't get scarred is beyond me. It got a new oil pump and new bearings on general principle. The ENGINE was in #352 of the 1977 model year Corvette and I can only surmise the assembly ling was shut down for a weekend or model changeover and I just got lucky. Still have the car.
1977 Eleganza II
Ogden NY
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