Q: There is a misfire on cylinder 2. I changed the cylinder and spark plug but am still having the misfire.

asked by on

Car starts fine but when idling or pushing the gas it is a little jerry. Check engine light blinks, had it tested at auto zone. It was a Misfire on cylinder 2. I changed the cylinder and spark plugs but didn't fix it. Did another scan at auto zone and it still says Misfire on cylinder 2.

My car has 99000 miles.
My car has an automatic transmission.

Hello. If you switched the spark plugs relating to two different cylinders and the same cylinder exhibited the same signs, then the issue is related to the other components on that cylinder. The test you performed was a great one. If you believe that the misfire is spark related, look to the ignition cable for that cylinder.

The cable may be fouled or damaged causing the plug to produce a weak spark. If the ignition system is not to blame, then the issue may be fuel related. If it is only causing the issue at one cylinder, you may be looking at a bad fuel injector. These can usually be cleaned or replaced. If replacing one, you should do all of them. This keeps the engine wear even.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the car is misfiring and suggest the necessary repairs.

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

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. There is a misfire on cylinder 2. I changed the cylinder and spark plug but am still having the misfire.

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: P0700 Transmission Control System MIL Request

Hi! A P0700 code stored in the powertrain control module (PCM) indicates that there is a code stored in the transmission control module (TCM) that can be accessed by looking into the TCM with an appropriate scan tool. Having the...

Q: Someone took a part off causing it not to start

Hello. I'm sorry to hear about this. You would need to identify what was altered to keep it from starting. It could be a simple wire disconnected or possibly a relay removed. If you'd like to have a local expert...

Q: Rough misfire at idle.

Generally, misfires are caused by either a spark or fuel issue or in cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition modules...

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...
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...
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...