I have a cosworth engine that has been sitting for about two years, another guy had it before me, but his information is not valid... you know the story there (thats new means its had it).

Put the engine in a friends sapphire to see what condition it was in.
Initially it started up fine, a bit smokey then it cleaned up. Then it really started getting smokey with lots of blowby.... The turbo was not spinning freely so we figured that might have been screwing things up. Some more oil and cleaning around turbo by my friend (largely external but he did spray some cleaner over turbo inlet to clean up). It then came good.

Flushed internals with valvoline product... as the oil galleries might be clogged added a slightly thicker oil as it showed a low oil pressure reading when warm.
Car was fine for a few days. Ran better each time and consistent, looking good.

Friend who is driving the car reports that it is now smoking really bad at idle, if he stops in traffic it just smokes everyone out... it is ok at other speeds. When I had it I never really idled it for long periods so it might have been like this all the time. Friend said it got worse quickly and is really bad...


Friend is going to try one of his turbos on it... not sure what else we can do...

Not sure if this is turbo seals letting go.... something else... any ideas much appreciated.