Skip the auto shop - Our mechanics make house calls

Q: Getting several codes fuel system too lean, Misfire cylinder 3 fuel cut off, misfire detected with low fuel

asked by on

BMW started the car from the night before and just started this problem from one day to the other.

My car has 101622 miles.
My car has an automatic transmission.

System too lean means that the fuel mixture has moved beyond the ability of the feedback system to compensate. One thing that can cause that is an air leak that enables air to enter the intake system without passing first through the air flow meter. When that code is accompanied by a misfire code, it can mean a vacuum leak somewhere near the cylinder that is mentioned in the code. Check for any broken vacuum hoses, particularly around the #3 cylinder runner. Not finding that, I would suspect a possible intake gasket leak. A YourMechanic certified technician can be dispatched to your location to perform an Engine is misfiring Inspection on your vehicle and help you diagnose and repair this issue.

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
  1. Home
  2. Questions
  3. Getting several codes fuel system too lean, Misfire cylinder 3 fuel cut off, misfire detected with low fuel

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: Car loosing power while driving?

You should have the cooling system pressure tested to see if you have a leaking head gasket. The coolant may be fouling out the number 1 and 2 cylinders causing the loss of power. Your head may be warped or...

Q: I need help with diagnostic trouble codes that suddenly appeared making vehicle almost undriveable.

Firstly, you should have the battery disconnected and the PCM disconnected. Check their connectors for any problems and apply dielectric lube to the connectors so the connection is clean from corrosion. If the problem continues then replace the PCM. All...

Q: Check engine light

Hello....If you request a check engine light diagnostic the cost is $70 to $80, the variance depending on your city and state. Once the diagnostic is performed, the cost to repair the identified fault(s) will depend on exactly which components...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.