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S-Type 3.0 V6 ~ Rough idle, white mist from exhaust, low on power

3K views 4 replies 5 participants last post by  police666 
#1 ·
My Jaguar S-Type 3.0 V6 (Automatic, 2002 with 130k miles) has had a misfire for over 2 years but was driveable and had normal power.

Lately the idle has gotten extremely rough and power has been lost.

The car is now un-driveable.

Engine shakes and idle goes very low, the engine does stall sometimes.

Replaced all plugs, gapped at 1.0mm.
New coilpacks all round
cleaned injectors

Lower intake gaskets were absolutely shot! So they were replaced.
Upper intake gaskets also replaced.

Cant seem to see or hear any vacuum leaks...

Since changing lower intake gaskets and what i believe was the fuel pressure regulator the car has developed a white mist from the exhaust... Petrol????

Any ideas would be great, thanks.

I can upload pictures and videos, will be done tomorrow.
 
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#2 ·
Is the white mist still there when fully warmed up? Does the white mist smell like coolant at all?

How's your water level?

Sounds like you're either getting water into the intake somehow or even worse, a cylinder head gasket could have gone.
 
#3 ·
Hi I would suggest a diagnostics be done to see what codes are evident. i agree with Redz it may well be head gasket which would also count for the lack of power.

Roger
 
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