1st Gen R53 Cooper S Engine overheating, spewing coolant

:cornut: Video Works.

Jason

 

Can't see the video on iPad, but are you bleeding the air John?

 

Video shows the exhaust. Does it smell sweet like antifreeze?

 

Maybe you fed that gremlin in you picture after midnight, and it messed with the motor?!:crazy:

Usually if the coolant system has been bleed after refilling, it should be ok....but in this case where it seems to be blowing coolant out the bottle, has been seen to have a whish exhaust (and smell there?), I'm guessing sneed speed and his suggestion that a head gasket has failed is correct.....
not sure if anything else is going on...
Any lights, codes, etc?
A failed crank damper usually DOES result in overheat....but with no alternator lights.. unlikely....
Another possibility is the PTO on the SC failed....leaving the car running, NO WATERPUMP....resulting in overheating, which possibly caused the head-gasket to go...but I even question that, cause the "KNOCK" for the first few miles before the FIRST EVENT.
I think we can speculate and guess lots, but this car is gonna need a hands on looks-see to figure it out...my guess..
IMO I would strongly suggest limit running it.. subsequent overheats can cause, more damage.
Good luck, and PLEASE post the findings when you get it fixed!!

 

If you need transportation any where just shout

 

My remote diagnosis remains as stated in post #6, thermostat.
It is certainly possible for the chain of event to have evolved into additional failures like a blown head gasket, and even more, but the initial event could have been as simple as the thermostat. It is really important to not let the temps go super-nova.

Since #4 gets more air anyway, it has a tendency to run a tad bit leaner than the others. Pull the plugs and look for damage on the plugs themselves and even look for aluminum deposits from the pistons on the plugs if it was crazy lean and detonating significantly. If the incident is due solely to the thermostat then possibly only #4 is involved. If you blew the head gasket then it could fail wherever the weakest spot is, and not necessarily by #4.

When my thermostat died, #4 ran lean and killed the plug, and that is where my incident ended.

Good Luck and whatever it is I hope it is cheap for you.

 

Thanks for filling us in. You've done a fine job. Now check everything & check it again. You'll be motoring in no time at all!

 

Thanks for the update John!

 

Oh my...those injectors have seen a better day!

 

I just showed a tech the picture and he asked if they were found at the bottom of the ocean?

 

I'll bet the spray pattern wasn't very efficient.... You should see a HP bump with new ones....