Skip the auto shop - Our mechanics make house calls

Q: Car misfiring

asked by on

My car is misfiring on an unknown cylinder.

Hello, since the car is misfiring there is probably a Check Engine Light that goes along with it. A simple code reader can give you the code associated with that cylinder that is missing. The next step is a little more involved, which is finding the cause of the misfire. To narrow down the misfire, this would require testing of the ignition system which consists of the coil, spark plug, and high voltage system. If the ignition system is okay, then the fuel injector will need to be checked. You may need the aid of a mechanic to check for codes and data, and perform any testing as needed to properly diagnose your engine misfire.

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!

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: I need to know the recommended engine oil.

The oil weight should be 0w20 and the oil is not specific to any brand or type. I personally would recommend a synthetic blend or full synthetic oil.

Q: Car making noise and trying to stall

The information you have provided for your Saturn is limited so it is difficult to point you in the right direction. Sometimes when a vehicle has an intermittent problem, such as noise coming and going from your Saturn, the problem...

Q: 04 Ford escape engine light came on rattling from muffler what's causing this?

You will need to have the exhaust checked to see if the catalyst is bad and rattling in exhaust. Then scan the computer to see if there is codes stored for catalyst issues codes. You will get O2 sensor codes...

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 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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...