Skip the auto shop - Our mechanics make house calls

Q: Cylinder 4 misfire, fuel injector looks to be the problem, only misfires on start up or idle, is it safe to drive?

asked by on

I have already replaced the coil pack and cylinder 4 spark plug, had it read at the dealership, faulty injector read, going to try to clean the injector with injector cleaner via the fuel tank, I need to drive about 400KM to visit family. Can I make the drive without wrecking my car? It only seems to misfire on start up or while it idles, no power loss, misfire isnt even noticable on my 4 cylinder engine.

Driving for an extended period with a misfiring cylinder can certainly do damage. That cylinder will run hotter because of the misfire and piston and/or valve damage can occur. If you need help having this repaired, a certified professional from YourMechanic can inspect the misfiring situation and have this addressed properly.

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!
  1. Home
  2. Questions
  3. Cylinder 4 misfire, fuel injector looks to be the problem, only misfires on start up or idle, is it safe to drive?

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: Spark plugs

Autolite Part Number AP103 {#AP103DP2} are OE style platinum plugs that fit your vehicle. They are pre-gapped to .054 in. These are the most economical option and thus are recommended. There are other brands and other options but they are...

Q: Car misfires

Hi there. Though misfires can be caused by a number of reasons, a misfire that is present only when the vehicle is first started only has a few common causes. Most of the time this is caused by oil or...

Q: where is clutch resevoir on 2000 vw passat turbo

Hi there. I am not convinced that the clutch reservoir is the reason why your pedal is faulty. It is more likely that the clutch pedal pivot bushing binding or the clutch master cylinder piston is binding in the bore...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...