R56 Cooper S smoking from the front...

[Lesgrandepotato]

Mrs Cooper S was weeping a bit of coolant. It got taken for a long run not topped up and it’s now smoking heavily from the front grill and running very lumpy and low on power.

Any thoughts on what’s happened? My guess is a blown head gasket, but I’m not keen on the accompanying knocking. Wondering if the water is in the oil?

[5harp3y]

did you check the coolant before the long drive

is there any coolant in it now?

[Lesgrandepotato]

No and no :-(

[5harp3y]

might have warped the head then, needs proper diagnostics

[Lesgrandepotato]

I’ve just heard back from the garage. Zero compression on number 3...

Wonder if it’s worth doing the head gasket on a 12 yr old car at 120k miles

[E-bmw]

Of course it is, alas from what you say it is unlikely to just be the gasket.

As was said above the head is likely warped.