Skip the auto shop - Our mechanics make house calls

Q: Misfires 3 cylinders stalls

asked by on

My car has a rough idle and gave misfire errors in 4 cylinder numbers 7, 8, 10, 11 with diagnostics. I didn't get any other error including the MAF. I changed all the spark plugs, ignition coil and fuel filter, and I still have the problem. I ran another diagnostic and 3 cylinders were misfiring. A reset didn’t work. My car still idles rough. There is loss of power in the car and it stalls sometimes at stop lights and stop signs. It starts back up right away. I had this problem 4 months ago but didn't pay attention to it, and it went away the next day. Do you have any ideas on how I can fix this?

Hello there, thank you for asking about your BMW 760Li. I don’t know what year your BMW is, but there was a technical service bulletin (TSB) on some models regarding the fuel injectors. Although I can’t seem to locate the TSB, the fix was to replace all of the injectors. This problem was so common that BMW issued an extended warranty on the injectors to 10 years/120,000 miles. This may be the problem with your vehicle. Of course, there are many other potential causes as well. My advice is to have your vehicle diagnosed by a professional, such as one from YourMechanic, to inspect your rough idle and misfires or replace a faulty fuel injector.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Misfires 3 cylinders stalls

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: rpm drops during idle

Hello, thank you for writing in. The vehicle needs to be scanned for diagnostic codes to figure out what about the vehicle has triggered the check engine light. They are very likely related. You can then use that information to...

Q: Engine turns over, but then shuts down

Hi there, thanks for your question about your 2007 Infiniti FX45. If you have had the battery replaced, or even disconnected for more than 10 minutes for a repair, there is a "relearn" process necessary for the engine's throttle mechanism...

Q: Hood latch stuck

If your car's hood latch is stuck, that may be a sign that the latches have failed, or perhaps the cable that unlocks it has snapped. As a problem like this may not be immediately obvious to diagnose, I would...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.