I own a 97 TJ Wrangler. Just under 200k on the clock.
Went out 4wding recently and after getting stuck in a bog hole I have been having some engine problems.
1. The oil pressure gauge is playing up. I have no pressure at idle and it shows low pressure around 2k RPM
2. The engine is making a knocking noise which i know is not a good sign.
3. Quite a lot of smoke coming out the exhaust.
4. After taking the rocker cover off I also noticed some smoke coming up from where the push rods go down. Not sure if that's normal or not.
What I've done already is pull rocker cover and cleaned all push rods. None seemed bent or damaged.
Pulled the sump. No visible damage underneath. The oil was rather thick and slightly milky. There was some sediment/ dirt in the bottom of the pan.
Pulled oil pump and cleaned it out. Looks to be operating how it should be.
I am at a loss at what I should do next.
I had my local mechanic has a very brief look and listen and he recommended checking the valve stem seals.
Any other advice and input would be much appreciated!
It is my daily driver and it has been an absolute pain borrowing cars off people to get to work.
smoke or steam?
i ask this as you said the oil was slightly milky.
blown head gasket?
have you done a compression test?
check the colour of the s/plugs.
Last edited by projoe; 10-11-2014 at 08:43 PM.
Reason: added more info
How deep was said booghole and how long were you stuck in it? I'd definitely be doing a compression test. Smoke and a knocking noise doesn't sound too good though.
First thing I would be doing is actually checking that oil pressure is genuinely OK. Never trust the factory gauges. When you have said low oil pressure on the gauge is that when the knocking occurs or is the knock all the time? Deep sounding knock or more of a rattle?
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TJ Engine Problems
