Infamous Knocking Slipped Sleeve DII
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Infamous Knocking Slipped Sleeve DII
I have a 2002 Discovery with 115000 miles. I bought the truck at 110,000 miles (therefore I don't know all the work performed lately) and now it has a very loud knocking noise. The knocking noise starts within 10 seconds of start up (at idle and drive) and will not go away. The knocking speeds up as I go faster. I did an oil change and there appears to be no coolant in the oil. Also it has not overheated. Do you think it is a slipped sleeve or oil pump going bad? Maybe a lot of sludge build up? I have read all the threads about slipped sleeve etc but I didn't know if a slipped sleeve would be knocking after cold startup. Thanks
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Did you test oil pressure during a cold start and after running for 20-30min? Like Drowssap said cold idle PSI will be high. I start up at almost 60psi in the morning. After driving for a while I level out at 18PSI at idle.
Has your red oil pressure light ever come on?
What oil do you use? Might what to try 15w-40 rotella if you aren't already using it.
Has your red oil pressure light ever come on?
What oil do you use? Might what to try 15w-40 rotella if you aren't already using it.
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I use 10w/40 and it knocks louder above the hood. I tested it at cold start but it also knocks when its cold as well as hot. Again the knock is very loud. My neighbors probably hate me by now. The exhaust smells terrible too but it doesn't really smoke. The coolant level has stayed the same. I ran the codes again today and nothing popped up besides the three amigos which I will get to later once the knock is fixed. When I accelerate it sounds kinda like a winding up noise.