White smoke

[Stankamps]

I changed the oil on my new to me k10, suddenly it started blowing white smoke and running rough. Any ideas as to what it might be? Thanks in advance!

 

[Catarata]

I changed the oil on my new to me k10, suddenly it started blowing white smoke and running rough. Any ideas as to what it might be? Thanks in advance!

What kind of oil did you use?

Enviado do meu WAS-LX1A através do Tapatalk

 

[Stankamps]

I used 10/40. But when I drove it a bit my coolant level also went down quickly. Makes me think it’s the intake manifold gasket. One spark plug was wet. The rest seemed fine. Will try to do a compression test next

 

[Stankamps]

Just seemed strange that it happened right after my oil change. Maybe they had some stop leak of some kind in the system

 

[Stankamps]

Any though appreciated, just hoping it’s not the head gasket

 

[John_D]

White smoke is usually associated with coolant getting into the combustion chamber, so head gasket is sadly the likeliest culprit...........

 

[Stankamps]

The intake manifold on these also has coolant flow through, it that a possibility in this car?

 

[John_D]

The intake manifold on these also has coolant flow through, it that a possibility in this car?

Looking at the inlet manifold gasket, that is a strong possibility........

 

[Stankamps]

My thought was if I have low compression it’s probably the head gasket as opposed to the intake manifold gasket. Would you agree? Any other way to diagnose?

 

[John_D]

My thought was if I have low compression it’s probably the head gasket as opposed to the intake manifold gasket. Would you agree? Any other way to diagnose?

Low compression universally across all four cylinders would suggest a worn engine, while low compression on one, or two adjacent, cylinders, can point to head gasket failure, though badly seating valves on those cylinders would also give a low compression reading.................
Taking into account the findings of the above diagnosis, an inlet manifold gasket is less than a tenner and probably quite quick/easy to change and would eliminate the possibility of that being the cause...........

 

[Stankamps]

Thanks for the input John, I will start there!

 

[Stankamps]

Any idea what the torque sequence and specs are for the inlet?

 

[Stankamps]

Looks like I will have to tackle the head gasket. First one for me, any help would be appreciated! Haynes manual ims on its way