
Thread: 79 305 oil pressure issue
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04-29-2016 06:45 PM #1
79 305 oil pressure issue
I have a 79 El Camino with a 305. Running at idle it has oil pressure. Driving is the same. Hard acceleration and shifting normally (automatic) pressure drops then comes back up. I think the pump is bad. Ideas before I tear into it??
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04-29-2016 06:56 PM #2
We had a similar problem recently and it turned out to be a bad oil filter. My advice, purchase a Wix, K&N or Napa Gold filter and change the oil. See what happens.
.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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04-29-2016 10:15 PM #3
Thanks, I'm loosing oil somewhere, next is a compression test.
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04-30-2016 06:10 AM #4
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04-30-2016 06:30 AM #5
Shawn, welcome to the forum.
Just to keep people from chasing false trails, what is the history of your El Camino engine? Has it been rebuilt, and if so, when, and how many miles since it was freshened? If it's an original Jerry's suggestion of the oil drain back holes being plugged is a really strong possibility.Roger
Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.
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04-30-2016 07:33 AM #6
Nylon pieces from timing chain sprockets are notorious for clogging oil passages and pickup screens. I don't know if nylon tooth sprockets were still being used in 79- assuming it's the original engine.
If so, the pickup screen can be cleaned, carefully. If you accidentally pop the screen in, opening the bypass orifice, then it's garbage, you'll have to replace it and the timing chain and sprockets..
Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
EG
In our neighborhood, 2 blocks down the hill was a gas station that (to me) all the cool car guys hung out there. 32 coupes, 33 & 34 Fords as well, a sweet 56 Ford Beach wagon that was setup gasser...
How did you get hooked on cars?