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I had that problem in my ford daily driver, turned out to be the oil pick up tube kept blocking up. Good luck.
[/ QUOTE ] If it doesn't turn out to be a simple problem, that will be the first thing I'll check.
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Smell the oil for gas....An old pontiac I had the fuel pump went bad and dropped gas into the oil. Gotta love those pressure gauges....
See if gauge is mounted correctly, no kinks blockages in the line, if all that is good, I would say it is time for a tear down....
[/ QUOTE ] The oil is still fairly clean and doesn't smell like gas.
The block is out of a motor that was rebuilt and the person cracked a head, so my previous owner put on a set of heads he had laying around and installed it in the Blazer. This was about 10,000 miles ago, so hopefully the bottom end is still good.
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Or actually it could just be that the gauge is reading correct. How old is your oil pump? Might need to look at going to a high output oil pump. Mine does the same thing and that is what I am going to do as soon as I get alittle time to get it done
[/ QUOTE ] If I don't find any obvious problems, like bad bearings, I'll try that since I'm not %100 sure that the oil pump is good.
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oil pressure sould drop a little when the motor gets hot. i dont think buy 15 or 20 though. 20 psi is good at an idle.a good way to check is the mechanical guage you just put in take the small plasctic tube off the adapter piece and start up the motor. it will either pour oil out (good thing) or drip out (bad thing). do that first cold then re attach it and warm up your motor. do the exact same thing and see the differance. its a pain in the ars but it works.
[/ QUOTE ] That would be great if it was just a gauge problem, I'll try your test tommorrow.
Thanks for all the help, I'll let you guys know what I find out.
