Question about 1998 Land Rover Discovery
Chek your oil, and oil pressure if the oil pressure is low your oil pump could be going out ,or your oil is low.
Posted on Sep 29, 2010
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Posted on Jan 02, 2017
SOURCE: Noise under intake manifold
best thing to do is to take the intake and valve covers off, its possible you may have inadvertently sucked something up and it's in you intake. That is the best solution.
No telling what it is until you take things apart and take a look. It shouldn't be too hard, make sure you get new gaskets, gaskets are cheap anyways.
Posted on Jul 29, 2008
The engine/oil pump may be worn enough that the oil pressure is too low at idle. Suggest getting the system pressure read at your favorite service shop and get an estimate of required repairs. Have you been getting regular oil changes?
Posted on Mar 02, 2010
if rattling sounds like you have a bad pulley bearings on pulley going out pop hood and look at belt with running see if it is moving correctly not going in a back and forth motion like warped llook at pulleys see if they are displaced
Posted on Sep 15, 2010
SOURCE: 2003 vue 3.0 liter
Often the result of low oil pressure is noisy lifters.
This is because they are the last of internal engine components to get oil pressure.
I don't want to bore you with details, but I have to begin somewhere here:)
In most lubrication systems in automotive oil is picked up through a screen at the bottom of a tube at the bottom of the oil pan. The oil pump picks up the oil, pumps it into passages to lubricate the engine.
Ok, so in order to develop pressure, there has to be a restriction to create it.
When an engine is new, the clearances in the oil pump, engine bearings and valve lifters is close tolerance where little oil is allowed to escape. But it does flow enough to keep a film of oil between the moving parts. Theoretically, no metal parts ever touch due to this film of oil.
As the engine wears from normal use or sometimes neglect, these tolerances widen and the oil runs out faster so the pressure drops.
If it drops severely enough, some parts will not get the oil they need.
Oil pumps also have a valve on them to regulate pressure. Perhaps this regulator is a problem.
You will need to find out what it is on your engine that is allowing the oil pressure to drop.
This may necessitate removal of the oil pan to inspect crankshaft bearings.
There are a few mechanical hints for you.
If you need further advise concerning this, ask me here.
Thank you for using FixYa.
Posted on Jan 31, 2011
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