low oil pressure
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Freshman User
Joined: Feb 2002
Posts: 32
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From: Valley Lee USA
low oil pressure
My 4.6 L engine is starting to develop lower oil pressure than normal. It is still in the normal range but at that low end.
What causes this. I was thinking sludge in the pan .
Should i flush the engine and What should I use?
I was told a cup or disel fuel and run for 20 minutes at idle and then drain.
What does anyone think?
Thanks
What causes this. I was thinking sludge in the pan .
Should i flush the engine and What should I use?
I was told a cup or disel fuel and run for 20 minutes at idle and then drain.
What does anyone think?
Thanks
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
How are you checking the oil pressure? The factory gauge doesn't actually show oil pressure. It just goes up whenever there is enough pressure to keep the light off. I am assuming this is in a truck?
Ususally low oil pressure is from added clearance from bearing wear. There is usually no quick fix for lack of pressure.
Jimmy
Ususally low oil pressure is from added clearance from bearing wear. There is usually no quick fix for lack of pressure.
Jimmy
Posting Guru
Joined: Sep 2003
Posts: 1,174
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From: Near Wamego KS
If you decide to flush the engine (not a bad idea to do occassionally) I have found the best to use is B12. Make sure you add a seal softening stop leak afterwards, nearly all engine flushes (including diesel) will dry out seals over time. If you have a dirty sensor this might help, if you have lots of wear at least your engine will be some what clean when you tear it down eventually.
< Samantha...my Co-Pilot
Joined: Dec 2001
Posts: 768
Likes: 11
From: Fallon, Nevada
For a safe engine flush use a product called Auto-Rx...see
http:\\www.bobistheoilguy.com
lots of good info there for gearheads about lubrication and related matters.
http:\\www.bobistheoilguy.com
lots of good info there for gearheads about lubrication and related matters.
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
Yes you need to get exact pressure readings don't go by the factory idiot gauge
How many miles on engine?
as stated bearing wear is a cause
The bypass spring in the oil pump becomes weak or partially stuck open.
personally I don't believe in flushes.
What weight oil being used and filter
Rich
How many miles on engine?
as stated bearing wear is a cause
The bypass spring in the oil pump becomes weak or partially stuck open.
personally I don't believe in flushes.
What weight oil being used and filter
Rich
