Before tearing into the engine, make sure the head gasket is leaking. Does the water level go down? Do a compression test. If water level goes down and compression test is uneven, then the gasket probably is leaking. If water isn't going down and compression test is uneven, squirt some oil into the low cylinders. If the compression comes up, the rings are shot. If no change, then your valve seals/guides are bad. he smoke when you rev it up would indicate it might be valve guides/seals. If it blows smoke on starting it is almost certainly guides. Thing is no matter what is wrong, the head would have to come off anyway. Hope the rings are okay, although if engine has lots of KM, probably best to rebuild entire thing.
I've never done one on a BMW, but a head gasket is not an easy job like a valve cover gasket. You have valve timing to set and it would be a good time to change the timming belt that I think the 4 cyls have.
Cosmos schwartz metalic Sparco strut brace factory X-brace 55w 6000k HID w/LED angel eyes smoked Lamin-X blacked out sidemarkers,tails and brakelights. DDM smoked corners and pedals. 35% tint all around, Prosport water temp and oil pressure gauges, Home Depot lip, M3 rear diffuser ASC-T delete.
Yeah be sure that the headgasket is actually blown....
__________________ 1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded I am Captain Obvious
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