BMW 1990 535 rough idle and missfires under load
Just bougt this 535 6 months ago...run great untill couple days ago.
I can starts pretty when cold, but the idle is rough, sounds like its running on 5 cyl. Tap on the gas litely and goes back to 6 cyl .
I changed the plugs, put a can if inj cleaner, still same problem.
I have been driving the car last few days, and it drive fine under light load, it's when i push on the trottle more and when it get under load, then it missfire and i loose most of the power.
PS. i changed the gas filter and air filter 2 moths ago.