Q: Q: I have a misfire in cylinder 1

asked by on

My car is showing code P0301 which is a misfire of cylinder 1. I have changed the ignition coil and spark plug and are continuing to have the same issue. The engine shakes up a little. Please help

My car has 55000 miles.
My car has an automatic transmission.

Hello there, misfires in cylinder 1 of your 2010 Acura TSX can be due to a variety of causes. The spark plug and coil are the most likely culprits and you have done well in replacing them first. There are a few other potential causes though, such as a fuel injector, vacuum leak, or a wiring harness fault. A qualified technician, such as one from YourMechanic, will be able to diagnose your misfire problem and make any repairs required to resolve the issue.

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. Q: I have a misfire in cylinder 1

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: Car not starting after replacing the battery.

Most likely the battery terminals did not get tightened down properly during the battery replacement. Double check that your terminals are tight and making a good connection. If everything looks OK, I suggest you have a trained mechanic take a...

Q: I don't know how to order a front bumper because it requires a lot of different things aside from just the actual bumper 2008 Acura TSX

Hello - this task is best handled by a collision repair estimator at a reputable paint and body shop. S/he is trained to evaluate visible and not-so-visible damage, and the costs to repair. Contact a reputable paint and body shop...

Q: Something loose in dashboard or steering column

A rattling noise from under the dash can be multiple things one of which could be a loose wiring harness bracket rattling against something. There could be fastener nuts that have backed off loosening components causing a similar issue. An...

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...
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...
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.