Home » Public Forums » GMCnet » [GMCnet] valve cover leaks, cleaning engine
| Re: [GMCnet] valve cover leaks, cleaning engine [message #317721 is a reply to message #317659] |
Wed, 17 May 2017 20:55   |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma:
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Senior Member |
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Check your distributor cap. If you got water inside the cap that could
cause a rough idle and loss of power.
On Tue, May 16, 2017 at 7:06 PM, Ek_Lektro wrote:
> So today i tightened a couple loose bolts on the valve cover, and since
> i’m soon going down to Tijuana
> for various work, i figured it’d be a good idea to clean the oil off the
> top and sides of the engine, so that after the drive
> i can better check for sources of any remaining leaks, and to make things
> cleaner for upcoming work.
> So i got the Gunk Engine Degreaser (original) and followed the directions,
> covering the carb. Once i carefully hosed off the top and sides of the
> engine,
> i sponged up some pools of water on the top, then checked the spark plug
> wires
> and started it up. Right away I was getting some misfiring from the
> drivers side, not rhythmical, but random spitting
> and i figured that might go away after a few minutes. After 7 or 8
> minutes i figured i better
> shut her down and see if i was overlooking something. My ’78 403 has
> headers, and i’ve long suspected
> a leak on the drivers side. Could this be related to the cause of the
> misfiring? Should i get the compressor and blow things dry as possible
> before trying again? or just go ahead and run the engine longer? I
> remember one experienced GMC mechanic once telling me that
> engine cleaning was OK, and “You won’t hurt nuthin’”… So despite being a
> little un-nerving to hear the engine sound so sh*tty,
> i’m happy it at least reminded me of that potential header leak (since TJ
> might be a great place to have them take care of it)!
>
> BTW: Excuse me for multiple inquiry posts this month, since i’ve been
> working on both coaches
> at the same time; And so If there’s a way to give back, like a place to
> donate for the upkeep of the forum
> or something(?), please let me know. (GMC.net Prime? like Amazon Prime?,
> LOL)...
> (Yep, i’m a prime question-asker, but lacking any mechanical experience (
> before i got my GMCs ),
> unfortunately i only rarely have technical knowledge to share,
> and I don’t want to over-use the privilege of this esteemed body of
> knowledge :)
>
> Many thanks, everybody!
> Greg / Los Angeles / ’78 Eleganza II / ’76 Birchhaven
>
>
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--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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