1992 BMW 750iL Q&A
1992 BMW 750iL Question: misfire
review when last tuned. it may be due. rec. fuel system clean. ethanol treatment to 1 tank premium. ethanol blend in fuel causes build up in fuel system(possibly fouling injectors), combustion chambers. exhaust and causes increased wear to spark plugs. get diagnostic run to find any other issues u need to be aware of. - arturo08
runs rough when first starts like missing
Car idles low and misfire when accelerating to next gear. Also burns up alot of gas.