Question about 1993 Jaguar XJ6

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Oil leaking from my 1994 Vanden Plas where engine attaches to exhaust

My engine makes a rattling noise when accelerating - listening rod sounds like it is coming from water pump, however since that is connected to engine block, who knows? Oil is leaking from the enging into exaust pipes on right side (if you are sitting in car looking forward) in area of third valve from front. There is also now two small hairline cracks in the chrome engine cover. The oil pressure gauge has (sine I bought it 9 months ago) fluctuated during driving, but in last two weeks has become progressively worse - lower more oftern. I put a quart of oil in it yesterday and it seemed to help. Any hints/insight?

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I can make a couple of suggestions here. First for oil to be leaking there must be a leak from a bad gasket...either from the head, (hope not) or head cover gasket....easy fix. It may be as easy as tightening down the covers. I would change the head cover gasket and make sure it is tightly screwed down.
Second the correct oil is 20w50 and preferably not a synthetic.
You will see an improvement in the oil pressure if you are not using 20w50.

Posted on May 03, 2017

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Posted on Jan 02, 2017

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SOURCE: leaking valve covers, 2000 jaguar vanden plas supercharged

no there is'nt enough pressure underneath to make it leak try tighting up the valve cover bolts or just getting a new gasket about a $6.00 to $10.00 dollar fix depending on where you go

Posted on Dec 02, 2008

  • 44 Answers

SOURCE: 1991 Jaguar XJ6 Soverign 4.0 Water in the engine oil

Get engine warm and do a compression test. This easily eliminates head gasket. Head gasket is a biggish job and time wasted if it is not the problem. Part throttle breather unlikely as this is a vacuum applied to the cam cover, so water is unlikely to get in there as the air is coming out of the engine. But, if water is in the inlet manifold, could it be the inlet manifold to head gasket? I can't remember for sure, but I think this is water heated? If so, that is probably your culprit. If not, it sounds like a top end water leak and unlikely to be head gasket, head gasket leaks nearly always show up as steam out of the exhaust - "white smoke". Hope this helps.

Posted on Jul 29, 2009

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If it is a ticking noise, it will more than likely be a valve train issue.
If a knocking noise, piston or crankshaft related problem.

Attached is a web site that you can listen to a piston slap which is a known issue for your 4.3.
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Listen to the recording and let me know.
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Leaking valve covers, 2000 jaguar vanden plas supercharged


no there is'nt enough pressure underneath to make it leak try tighting up the valve cover bolts or just getting a new gasket about a $6.00 to $10.00 dollar fix depending on where you go

Dec 01, 2008 | 2000 Jaguar Vanden Plas

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