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have an 06 mxs with low oil pressure pulled valve cover no major oil l…

have an 06 mxs with...
have an 06 mxs with low oil pressure pulled valve cover no major oil leaks from housings. pulled filter bypasses look ok. has 1-=20 at idle 30-40 at speed than low oil pressure warning comes on
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Answered in 37 minutes by:
1/20/2015
Technician: Cat Man, Cat Engine Expert replied 7 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Hi. Thanks for asking your question! I will try and help you out.
There are five things I have seen cause low oil pressure.
The first is clogged oil filter. If you haven't already I would change the filter.
Second is a stuck open bypass valve in the oil filter housing.
Third is a broken off piston coolin jet.
Fourth is a faulty oil pump. Relief valve stuck open
And lastly is worn engine bearings. Rod and Main.
Please reply back if you need more help or have more questions. I am happy to assist.
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
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Cat Man
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Category: Medium and Heavy Trucks
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