Jeddy 0 Report post Posted June 6, 2008 Its a 93' 325i manual and its been blowing quite alot of smoke most often at around 5k rpm, particularly when in 2nd and when its been driven around town a bit. What are a few things that would most likely cause this? Thought i'd ask here before taking it to the mechanic Quote Share this post Link to post Share on other sites
ducatiss 1 Report post Posted June 6, 2008 Lots of things could cause this - worn rings/bore/valve guides and or seals are among the worst and most expensive. Take it to a mechanic fo a compression and leak down test would be your first step to try and diagnose further. How much oil is it using? If it is blue smoke it is oil burning. Black smoke will usually mean a fueling issue. Quote Share this post Link to post Share on other sites
sp8s 1 Report post Posted June 6, 2008 White "smoke" = water Blue smoke = oil Black smoke = petrol or its a diesel Quote Share this post Link to post Share on other sites
