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Hi, Ive been a member for a few years, and have found a lot of helpful information in that time.
As I havent found many first hand accounts of CRD grenading I thought I would post this.
My 2007 CRD just died, totally melted piston no.4. No holes, no cracks, from the top ring up melted into 50 odd pea size balls and smeared down cylinder walls, damaged head at cyl no.4 (small dents , no visible cracks) and bits of melted piston holding valves open, had no compression in 3 or 4, 3 due to warped head I suspect (no damage to gasket), coolant in oil. I have an egt and boost guage and never normally drive it above 550c, could easily go way higher towing but i back off, was 20 mins from home when happened, towing 1 ton up hill at about 70-80 kmh with overdrive off (automatic), hadnt looked at gauges the 15 mins before so not sure if they showed anything. Happened so quick unless you were looking at the guages constantly you couldnt prevent it. Need audible alarms I think. I hadnt notices any increases or spikes in boost or rising egts or never missed a beat in the 4 years Ive owned it including the last few weeks.
I have an upgraded intercooler and 2.75" exhaust. Very well looked after and serviced every 5000Km. Fitted oil catch can and Fuel manager pre filter fitted at 120,000Kms, no egr block or dawes valve.
After dismantling, found intake manifold, throttle body and EGR gummed up with black gunk (exhaust gas mixed with PCV) , injectors covered in it too (hard to imagine they could have been workin properly) Sump, exhaust manifold contains melted piston.
Also found 2 oil pump retaining bolts missing and 3 more on last thread about to fall out, found one crushed up and 2 gears in the timing case damaged as a result. This is something you could not check without stripping the engine.
Apart from all this the engine seems in great shape, clean as new inside and no corrosion.
Have taken lots of pictures and will post up when I've finishing cleaning up and inspecting everything in the next few days.
Regards, Jayson
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