Hi i was wondering if anyone has any information that could help me out. please and thank you
its a 2004 bmw 525i manual transmission with 84000, i just bought it from a dealership bout 6 months ago.
the other day i was at a red light and my service engine soon light came on as well as the high emission alert. that was my car started to rumble, but when i step on the clutch the rumble goes away. when i drive the car it drives perfectly normal its just when it come to an idle the car begins to rumble as if it was bout to die. it idles a little above 500 rpm but when i step on the clutch it idle around 6 or 7 hundred rpm
i changed the spark plugs to the bosch platinum +4 and the problem got worst, so i went to exchange the spark plugs for some ngk iridiums and it got better but the car still shook at an idle. when i took out the bosch platinums the tips were brown look like it was burnt
i took my car to a mechanic and he ran the the test. it said my car was misfiring almost all the cylinders and fuel was running too lean.
does anyone have an idea what it could be,