Question about 1994 Chevrolet S-10 Blazer
I have a 1993 chevy van with a 350 V8, and the oil pressure drops at high RPMs, like going up a long hill. I went to a heavier oil and it helped a little bit, but I am workied that I will sieze it. It has over 100,000 miles, but doesn't burn oil.
Have you ever heard of oil pressure dropping at high RPMs?
Good evening and welcome to fixya
sounds like you might have an issue with your oil pump losing pressure. if there are no rattles knock or clangs and the engine is not burning oil, make sure to check the dipstick for signs of a glittery metal substance that could be signs also of the engine having issues then the pump is probably your issue. there is a spring inside the pump that you can actually take out and change for a heavier spring that would actually stop this but it is easier to swap in a new oil pump. i do have one question for you though, is this correct an s-10 blazer with a 350 in it? if so has the engine been built at all or is it stock? once you swap the pump go back to running a 10w 40 oil the motor will run better on that and easier, yes your right though the heavier oil does help but if everything is good then it will hender power unless the engine is fairly well built. let me know and i will help you solve your issue. thnak you
Posted on Mar 10, 2009
Yes, my Chevy Suburban did the same thing. i had to re haul the internals. it was time. the rings were in bad condition. i had massive blow by. in your case, you could grab a few more miles by replacing the rings but, i would re haul if possible.
Posted on Mar 10, 2009
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Posted on Jan 02, 2017
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