Originally Posted by
C05W0RTH
what can cause a cosworth to smoke?
with mine when i'm slowing down with using my engine there's no smoke but as soon as i press the throttle a there's a puff of smoke?
i know it points to the turbo but could there be any other reason say if the turbo was brand new?
a good test is to find a big hill; let the engine overrun down the hill, then at the bottom give it a boot - if you get blue smoke its normally a good indication to stem seals or guides
but as Danny said it could also be oil rings; but start with the cheapest first!
if it is oil rings; it wont always show on a pressure test