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g-mack

Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967

Porny wrote:
Are you using coolant?

This sounds like a cracked head... Especially as the problem only occurs when the engine is up to temp. Quite common on a 300tdi.

Ian

just resurrecting this thread as i have this problem too!
what causes the head to crack? mine isn't over heating, is running fine, but using lots of coolant and white smoke/steam pours out exhaust at tick over once warm!.
is there any chance it might be just the gasket? or for water to be getting into the exhaust must it be a cracked head?
also if it is cracked and letting water into exhaust port will this be doing any other damage? My 109 thread

my youtube channel

25th Apr 2014 8:41pm

LCJ

Member Since: 07 Sep 2009
Location: UK
Posts: 201

It might just be the gasket, the give away on mine that the head was cracked was apparently that one of the exhaust ports was washed clean while the others were coked up - should be obvious when you get the head off.

I didn't find any other damage, and the engine is running well now *touch wood*.

Hope that helps in some way and good luck!

12th May 2014 10:02am

g-mack

Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967

thanks mate, hope i do get away with just a gasket but like you knowing my luck it will be cracked head !! My 109 thread

my youtube channel

20th May 2014 10:14am

LCJ

Member Since: 07 Sep 2009
Location: UK
Posts: 201

It's not all bad. Between the old head and the coil springs I replaced as well I'm building a slightly odd looking coffee table!

22nd May 2014 4:38pm

Elessar

Member Since: 24 Jun 2014
Location: Oxfordshire
Posts: 3

Just as a warning to others, my 300tdi started smoking like this and, in my infinite wisdom, I decided to take it for a short run in hope that it would clear up... The result was the engine running on its own oil until it eventually went bang and a complete engine rebuild!

The root cause was a dodgy injector that had melted the no.1 piston so I would definitely get your injectors checked if you start to have problems like this!

24th Jun 2014 5:33pm

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