Alternative power-plants and transplants (GTi, Porsche, Subaru, Audi, diesel etc). Discussion and Q&A last answered over 2 years ago.
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Have a van fitted with 1.9 AAZ. Engine has covered about 60K miles, about 10K of them in the van with no problems. Last week it started smoking.
Its ok when driving / on full throttle (perhaps a tiny bit of blue smoke), runs clean, but when you back off so on overrun with throttle closed it puffs... first a little bit blue, then loads and loads of white / grey smoke. Rev the engine again and it clears and the engine runs clean.
Once the van is warm, leave it idling and it pumps white / grey smoke out.
Engine isnt using oil or water, so it must be a fueling / over fueling issue?
Anyone have similar experiences?
Could is ne injector(s) or something in the pump to do with idle?
maybe obvious but it isn't getting a little of the breather from the crankcase into the induction is it?? in theory would look like over fueling or bad timing?