[jackstrath]

Hi guys just got my car back from having the thermostats changed (did both egR and main) as well as getting the glow plugs changed

Now the car is pouring out white smoke ?

Car is a uk car 335d e91 , any guesses ?

[jackstrath]

Coolant low message has just came up

Somethings leaking water into the engine

Would I be right in saying egr coolers are known to fail?

[jackstrath]

It's a mammoth smoke screen , no error codes which is weird

[jackstrath]

Am thinking changing the thermostat in the egr has desturbrd something and it was maby a hairline crack that's split ?

[Hoooper]

Seems likely based on what you have said so far.

[iaknown]

I'd be careful about letting it sit for an extended period of time then cranking it. No one seems to be sure where that coolant will run if the EGR cooler is leaking....

[DWR]

Might be kissing the O2 sensor goodbye. Ethylene glycol can contaminate the sensor in a very short time.

[BB_cuda]

Never mind the sensor, beware of hydro locking the engine

[iaknown]

Originally Posted by BB_cuda

Never mind the sensor, beware of hydro locking the engine

+1 This was what I was referring to and what I'd be worried about as well....

[Hoooper]

In theory based on the exhaust manifold design, it should not be possible for coolant to trickle backwards to the exhaust ports and into the cylinders. The coolant should run down into the turbos and out the exhaust. However, that is a lot of "should" and doesn't account for what would happen if a large amount was able to build up in the cooler due to the valve being closed on the exhaust end of the cooler. Not really worth the risk of driving it until you can solve the problem

[Yozh]

Messy. But I love the license plate J55 WTF

[jackstrath]

Thanks guys, looking like a new cooler then

Ffs this is going to be an expensive day out

[jackstrath]

Also worth noting when you first start it up it's fine but after a min or two it it starts getting worse and then it's in full James bond smoke screen mode

[kiel_dafo_kenyg_as]

Is it smoke or steam? How does it smell?
The loud turbo whistle is not normal unless you have downpipes. I think you have a blown DPF along with at least one bad injector.

[jackstrath]

all fixed , was the EGR cooler right enough , just as i started to unbolt the EGR take off on the exhasut mani it started pouring out water , one rather expensive cooler changed out later , cars back to how it should be

thanks for alls help !