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Discussion Starter #1
My father in law has an 04 525 and he called me and said he was putting a smoke screen behind him going down the road.

I had him rev the engine and it looks like water/oil coming out of the exaust.

Check out picture... anyone have a guess at what 'may' be the problem. the car has well over 100,000 miles on it.
 

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check the oil and coolant for more clues. since this looks pretty bad have him drain both so you can get a good look at it.

really really bad headgasket leak?
 

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what colour is the smoke?
if it's blue, you're burning motor oil.
if it's white with a weird stench that doesn't smell like unburnt petrol, then it's pretty sure a headgasket leak.
 

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The De46vil's Army
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take the radiator cap off cold, start the engine, if coolant comes flying out i will be from the cylinder compression escaping through the head gasket.
 
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