engine oil smoke after warmup

[32valve]

93 500SL M119.972

Cold start is fine but after warmup and driving smoke becomes progressively worse and noticeable at idle, full load results in 007 level clouds. This behavior doesn't really add up for stem seals which is usually present at startup and more intermittent, it almost acts like a bad diaphragm-style crankcase oil separator would. The RH full load breather hose hooked up to the throttle body before the butterfly has a decent amount of vapor coming out of it at idle

My only guess is that with a broken RH separator/funnel thingy the suction from the intake under load would eventually force oil to pool in the intake. Has anyone actually had smoke caused by something in the crankcase vent system?

 

[gsxr]

Try disconnecting the breather hoses, when the engine is warm and smoking. See if the cloud goes away at full load.

Also pull all 8 plugs and see if 1 or 2 cylinders have obvious signs of oil on the insulators.

BTW - welcome to the forum!

 

[TerryA]

@32valve,
Check that your brake booster is not leaking brake fluid into the engine. If the vacuum check valve is not working properly to the brake booster, it will allow brake fluid into the motor and it will produce heavy white smoke.

 

[32valve]

already isolated the booster, line is dry. trans modulator as well.

i’ll try to run it for extended periods with open breathers