2002 DII low oil pressure @ 133k - what to do?
#12
#13
Just to be clear here, dropping the oil pan is not free. You have to replace the gasket, buy RTV, don't forget a new pick up strainer o-ring, and the oil cooler pipe o-ring will need to be replaced as well.
Also changing the oil pump gears with high miles isn't wasted money more as preventive maintenance in my opinion. Same with the timing chain and gears. Waiting for either the oil pump gears or timing chain to completely fail will probably cost you way more money in the long run.
#14
I've gotta agree with Jared9220... I think it would be false economy to go through all the hassle to drop the pan, and it is a big hassle, and not do the oil pump at least. There are tons and tons of dead Disco's around due to failed oil pump gears. And we're not just talking about the 03's. Sooner or later, the oil pump outer gear cracks and the pump fails. When it does, your engine is on deaths door until you replace it. If I wind up dropping the pan again for anything, that pump is getting replaced again no matter what. Without an oil pump, you've got nothing but a massive repair bill looming.
#15
#16
Thanks for the additional comments, I just wish the one about the bypass valve had been mentioned before I had the front of the engine and the oil pan off. Still haven't gotten the front cover off yet (I'm working on it in small blocks of time.)
I am just stunned that it could actually be plugged pick up tube - that would be unheard of in the Chevy V8 world I am used to.
We will see what I find when I get the front cover off - does anyone know if you have to remove the water pump to remove the front cover ? It is obviously new and I woudl prefer not to have to remove it from the front cover if not required.
I am just stunned that it could actually be plugged pick up tube - that would be unheard of in the Chevy V8 world I am used to.
We will see what I find when I get the front cover off - does anyone know if you have to remove the water pump to remove the front cover ? It is obviously new and I woudl prefer not to have to remove it from the front cover if not required.
#17
#18
-The timing chain kit comes with a new water pump gasket, front cover gasket, front oil seal, oil pan gasket, and timing chain and gears: ($120 Timing Chain Kit For Land Rovers And Range Rovers | Engine Parts)
-Oil pump gears: ($100) Rover Oil Pump Gear Kit (Same Fit As Genuine Part # OPK003) | Land Rover Engine Parts
#19
#20
OK, the mystery deepens. Got the pan and cover off. No sludge in the pan, pickup tube is not blocked, so can rule that out. Pump rotor is not cracked or broken, and does not look worn, so can probably rule that out. Had an old Buick 231 years ago when they put oil pump gears in an aluminum housing - those had a problem with wearing the housing. Minimal wear on the housing relative to that old experience so I don't think it is that. Dropped a rod bearing cap - minimal wear there - will plastigage a few tomorrow but I don't think I have a clearance issue. Ran out of time to check the pressure relief valve but needless to say I am going to be pissed if that turns out to be the problem after I have dropped the pan and pulled the front cover!
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