Question about Cars & Trucks
T?i ?ang g?p v?n ?? v?i phim d?n xe h?i c?a t?i, gi? ch?a t?m ???c gi?i ph?p.
Posted on Mar 26, 2020
10 psi with a hot engine at idle isn't so bad, not great but not bad, but 20 psi at road speeds is quite bad and I think should be double that.
Bad lifters is the least of your trouble as low oil pressure puts the bottom end - that is the crankshaft and bearings at risk of serious damage.
An engine with low oil pressure should have the cause investigated asap, preferably without being driven further...
Posted on Mar 26, 2020
Most sensors will trigger the check engine light, however the TPS(throttle position sensor) or EGR Valve(exhuast gas recirculation valve) could be potential causes. Does this problem only occur at idle? Is the idle normal in park? Let me know and I can try to assit further.
Hope this helps
Posted on Jun 27, 2008
You have fuel runback.Replace the injector leak off pipes then try.If this does not work then have a non return valve fitted to your fuel supply pipe close as possible to the punp.Hope that was helpfull good luck.
Posted on Aug 01, 2009
i just bought a BII with famous tick..........oil pressure light came on (no gauge). I installed mechanic gauge and showed 5 psi so I decided to replace oil pump. Pulled pan off (not fun!) the pickup tube was clogged and the was part of the timing chain tensioner in pan. I then pulled timing cover off only to find chain streched and the chain guide and tensioner pretty much gone. I think tick was chain slap..........will know for sure in a couple days.
Posted on Dec 24, 2009
SOURCE: low oil presure on gmc 5.3
Oh my!! I'm guessing the "oil pressure relief valve" is stuck open. Does the motor sound OK no knocking or ticking? The "oil pressure relief valve" is built into the oil pump.
Posted on Jan 03, 2010
The Aurora is a low pressure oil system. The only solution available at this time is to increase the oil weight. I went o straight 30W to solve the idle alarm issue. Some use 20W oil and that works too.
With 20W you will be at 80 to 90psi cold then drop to 20-30psi hot.
I first replaced the oil pressure gauge and it was worse. I put the original back in and it was better. Then went to 30W and all is fine.
Running it that way for a few years now.
Posted on Apr 03, 2010
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