Q: Engine miss fire at low revs

asked by on

I have had my car in to a garage to get resolved miss fire on cylinders 1 and 2 they did a diagnosis and replaced spark plugs then coil packs annd no change they did rocker cover gasket injectors and eccentric shaft sensor and cheated the timing still not solved it any ideas as getting expensive now thanks

My car has 92000 miles.
My car has a manual transmission.

Sometimes the best way to diagnose a misfire is by switching components from cylinder to cylinder to see if the misfire moves. It can take a little time, but helps keep you from buying stuff you don’t need. If you have eliminated the ignition system as a fault, you need to look at fuel and compression. Sometimes the six cylinder BMW’s will have problems with the intake gasket that will lean the mixture out on individual cylinders at low speeds. You could also try swapping injectors from cylinder to cylinder if you’re ready to do that much work. If you think you would rather delegate this job, you can contact Your Mechanic to have a technician come out to your home or office to diagnose your misfire and let you know what you need to do.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Engine miss fire at low revs

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: Q: Battery light on while driving but then goes off?

This may be a sign of a failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator. The voltage...

Q: I have removed crankshaft position sensor, but cannot find where to disconnect it from the harness?

Hi Mike. Thanks for writing in tonight. It would be best for you to download a service and repair manual for your Pontiac, to trace the electrical harness connections and to review the correct procedures for installing the new crankshaft...

Q: Car will not start. It was running fine, normal shut down, and wouldn't start back up five minutes later.

It really does sound like your battery has gone dead. Sometimes they can develop an internal short where they seem fine one moment then go dead the next. The indicators on the chargers usually don't tell the whole story. ...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...