E36 328 Oil in exhaust??

[Danielmsh1]

Hi all. This my 1st post here and hoping to get some advise. I love cars especially my 328 but unfortunately I'm not as knowledgeable as most of you guys.
I recently had my e36 328 (late model) engine redone - I had a terrible problem with always replacing spark plugs they had oil and my car smoked pretty bad (white smoke. ( all this happened after I rolled the car) the car had mixed oil and water and the mechanics were sorted (nothing replaced) my worry is after the engine work - the car still smokes white - on start and high revs - it's no longer Misfiring - and I get a layer of oil on the exhaust pipe - I've been told that I need to run the car so that it burns the oil in the exhaust. I haven't done this coz I get my suspension in order 1st. I however think I've been had. The car runs ok but not as powerful as it was and the idling sounds like there is no oil when there is. I will post pics and vids as soon as I can


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[danieljames]

Firstly... Welcome boet.
You say u had the engine redone. Complete overhaul? But nothing was replaced? (Not following here).Mixing oil and water is usually head gasket...and from what I've read on the forum the m5x motors tend to warp or crank their heads and not just pop a gasket.

White smoke, as far as my understanding goes, is caused by leaky valve stem seals or busted oil rings.(Please,I am no mechanic, just a DIY junkie).

Where on the exhaust do u have oil? These are just some of the questions the other fanatics will ask. Hopefully some of the gurus can chime in

 

[BlackAnt]

I don't know much about BMWs but this sounds like it could be rings...

 

[Gordvisr]

make sure it was ot overfilled aswell, rings might be gone if not overfilled.
and like some of the other has said valvestem seals.

And how good was the "mechanic" that worked on the engine.

 

[Nikhil]

Everyone who commented above is on point. However its really hard to diagnose without actually seeing the car and knowing exactly what was done by these mechanics.

 

[Spiro]

would i be correct in adding if the Spark plugs are not torqued enough as well... ?

 

[danieljames]

would i be correct in adding if the Spark plugs are not torqued enough as well... ?

Spark plugs should never be over tightened. I hand tighten and then just nip them up quarter turn with a plug spanner.

 

[Ratslaaf]

Bmw states a torque value of 23N, but felt a little too loose for me so I went to 28N. If you want to be all technical about it.

 

[Gizmo]

Bmw states a torque value of 23N, but felt a little too loose for me so I went to 28N. If you want to be all technical about it.

On the box in which bosch spark plugs come in it also says 28nm.

 

[Peejay]

Check the compression in each cylinder first. It's just because you say the car isn't as powerful as before.
Also when you say the engine redone what was actually done? Was the head skimmed the block skimmed? Was valves redone?

Most times when doing a 328 engine the blocked needs to be skimmed.

 

[Gordvisr]

Everyone who commented above is on point. However its really hard to diagnose without actually seeing the car and knowing exactly what was done by these mechanics.

:withStu:

 

[Danielmsh1]

Thanks to all replies. I realize that this is a blind question. So I will get some more info and let you guys know and include pics and vids as promised


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[danieljames]

Thanks to all replies. I realize that this is a blind question. So I will get some more info and let you guys know and include pics and vids as promised


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Mooi so

 

[Danielmsh1]

Ok. So I started the car in the morning, as usual, puff of smoke then smoke at revs. In the evening I took it for a bit of hard driving. When I started it again it sounded better (no lazy revs or heavy misfire) it's still misfiring and smoking. And I realized tiny little drops of oil where I had parked the car over night. I have attached the vid

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[danieljames]

Shu my dear.....i think snoop dogg is residing in your engine....

From my(limited) mechanical knowledge I'd say valvestem seals. That's why on idle or perhaps constant partial throttle she doesn't smoke 'as badly'. Rings will smoke period.
She smokes on start up because oil is leaking past the seals and dripping into the cylinder over night and burning away on start up. This would also cause a misfire(that clears up after awhile) because the plugs are wet. as she warms up does she smoke any less? How long ago(in kilometers) was the engine done?

Just speculating though

 

[Gizmo]

Bad valve stem seals don't cause misfiring, the car has a constant misfire. You have broken/collapsed piston rings. Smoke coming from the right exhaust tip says its piston number 4 or 5 or 6 or a combination of the 3.

 

[danieljames]

You have broken/collapsed piston rings. Smoke coming from the right exhaust tip says its piston number 4 or 5 or 6 or a combination of the 3.

That looks like a standard back box. IIRC it's not a 'true' dual system as the gasses mix inside the box. Although this I recall from my 95 325i which has no cats or O2 sensors anywhere on the system.

Not arguing.....more of a question.