E46 318 Smoke burning smell oil spitting
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  1. #1
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    Smoke burning smell oil spitting

    Hi all

    Bought a 2002 318 2.0 petrol yesterday nice car checked it over and seemed good car average age related marks ect.
    Everything seemed fine drove home and then to work and back 9 mile trips a few times. Went to take the car out tonight and there was a big leak under car think its coolant smells sweet and looks wet rather than dark like oil.

    Popped the bonnet to find when I had it running the engine got quite hit quite quick yet temp gauge was reading normal in the centre. There was smoke coming from left hand side of engine drivers side and I could smell a burning rubber smell. There has been oil leaking what seems like from around the oil filler cap.

    There is gold fillings or glitter around the coolant cap and had to top up with water as was low.

    There is also some smoke coming from exhaust so I'm very worried now and gutted the car was not like this yesterday but surely this is not a coincidence.

    The bloke I bought it from said he had changed the rocket covet gasket recently and it says in service book it was done 20000 miles ago on a service

    Is the head gasket blown as there was a hint of cream on dipstick but not on oil filler cap.

  2. #2
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    The oil leak sounds like the rocker cover leaking onto the manifold and burning off, or the vacuum pump

  3. #3
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    It seemed like the oil is coming from around the filler cap and or maybe the rubber seal

  4. #4
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    I get a little creamy crap on the bottom of my dipstick (keep the comments to yourselves guys) I have same engine with no issues at all so I wouldn't worry about that too much.

  5. #5
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    ^^^ ya shoud get that checked out mate it don't sound to healthy

  6. #6
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    I've heard that the creamy colour can be caused from short journeys

  7. #7
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    Quote Originally Posted by dansoap View Post
    I've heard that the creamy colour can be caused from short journeys
    There's been alot of rain recently, so there will be alot of moisture in the air, so its quite possible that if you're doing very short journeys then you'll see the problem.
    It's usually more of an issue for the 6-pots in winter.

    As for the oil, have a good look tomorrow, and let us know where you think the oil is leaking from, if you can see it, and we could advise further.

  8. #8
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    It could be as I do less than 15 miles a day stoping about 4 times.

  9. #9
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    Hi Dan,

    the first thing to check is the CCV (breather) system (check link), or you could be wasting your time when trying to fix oil leaks. The breather valve (oil separator) can block causing a build up of pressure and forcing oil out of here, there and everywhere! A quick indicator is the vent hose (see pic) that runs over the intake, check if it's collapsed or has a lot of oil in it, also get a torch and have a look down around the oil separator (see pic) for any oil on or around it, another is to remove the oil filler cap and place a plastic bag over it, there should be a slight vacuum drawing the bag in.

    CCV system:
    Crankcase-Ventilation/oil separator BMW 3' E46, 318i (N42)

    Vent hose location:
    -ccvventhose-jpg

    Oil separator location:
    -oilseparatorlocation1-jpg

    The coolant resevoir bottles are known for cracking as well as the rads bowing but it's just a case of getting in there and pinpointing the leak.

    One more thing you should check is the timing chain tensioner, they were modified due to losing pressure. A lot of these engines have been killed because of it.

  10. The Following User Says Thank You to mojo For This Useful Post:

    Ronnie (25-06-2012)

  11. #10
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    Just put it in garage for diagnosis he hopeful it not head gasket as oil leak to high but found another puddle this morning do think I def got coolant leak hope it's not radiator vet that is costly

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