Car Questions
RepairPal is your advocate for car care advice and guidance

Black smoke , rough idle high RPM

(1990 BMW 325i)
in Lithonia, GA on March 01, 2010
My car idles rough and black smoke with high RPM .Its a stick shift so it BUCKS at will due to bad RPM.
Ask a Question
Displaying 1 answer & 0 comments
Popular Answer
on March 01, 2010
This is indicating a rich running engine. Check the fuel mixture and fuel pressure, make sure they are within spec and resolve accordingly.
Sign in to reply
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
New o2 sensors, new spark plugs. maf checked out okay. egr cleaned. iac cleaned. runs great when not warmed up. no co...
My 2000 tacoma failed the emissions test - engne light had been coming on but mechanic reset it. one mechanic said re...
Didn't find what you were looking for?