White exhaust smoke and power loss

[julianholzner]

Hi Guys,

I do currently have a big problem with my M54B30 swapped E30.
I was driving down a mountain road for 15min without any throttle, after that, I turn the engine off and had to pick up something at the local shop. 5 minutes later I came back and started the car, an incredible amount of white smoke came out of the exhaust (smelling like burned oil). Well to be honest I was extremly afraid so i tuned it off immediately.
Went to the engine to check oil level, all ok its half way full.
So I turned it back on and the smoke amount decreased quickly, I drove the car back home up the mouintain, but to be honest I feel that the car has less power especially at low RPM's and I lost a fair amount of throttle response, if i touch the throttel it feeld like it takes 1/4 second till it starts accelerating.

Anyone any idea what this could be?
Cank Case ventilation shouldnt create power loss ?
Valvbe stem seal same, shouldnt create power loss ?

Vanos have been done nor even 2000km ago
Car was running absolutely great before with strong acceleration at low rpm's

Please help me in somehow

[82eye]

first outright guess is a possible head gasket. white smoke often indicates coolant in the cylinders.

[julianholzner]

Coolant is completely clean, also oil cap shows no sign of contamination. Also the smell is defintily oil, not coolant.

[82eye]

Coolant is completely clean, also oil cap shows no sign of contamination. Also the smell is defintily oil, not coolant.

could be the ccv but i would expect it to be more blue smoke than white. a lot of swaps do a ccv delete / catch can which eliminates the problem. like you mentioned, i wouldn't think a significant power loss would come with a tired ccv.