Q: Q: cylinder 2 misfire.

asked by on

I have a cylinder 2 misfire on my car and i have changed the coil pack, fuel rod, spark plugs, fuel injectors and i went to a mechanic shop and he said its either a burnt valve or a blown head gasket and there is no white smoke leaking coolant or any other signs or a head gasket my question is from this information would you think its a burnt valve?
My car has an automatic transmission.

Engine misfires can be caused by many different things, but there are a few suspects that occur more than others. 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 not working properly. When the misfire results from a fuel related issue, this is commonly related to a lean fuel condition (lack of sufficient fuel supply to the motor). Fuel related misfires can be caused by many different things such as low fuel pressure, faulty or dirty fuel injectors, a faulty O2 sensor, a dirty or failing mass air flow sensor, a faulty or dirty idle air control valve or a vacuum or intake leak. When the fuel supplied to the combustion chamber is insufficient, this results in an ignition (spark) that is igniting a less than balanced load of fuel and air. This results in a misfire or an explosion in the cylinder that is much less powerful than the other cylinders. This creates a loss of power that resonates throughout the motor additionally causing other problems with ignition and fuel timing. I would recommend having an expert from YourMechanic come to your location to diagnose your misfiring problem.

Was this answer helpful?
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. Q: cylinder 2 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: Plugs get oil on them and misfire

The top most part of your engine is called the valve cover. On a V-shaped engine, you should have 2 valve covers. These valve covers are bolted to the top of the cylinder head and have gaskets in between the...

Q: Front brakes rattling going downhill and steering wheel shakes.

Despite having the disc brakes and brake pads replaced on your Dodge Durango, there can be other reasons that could be producing these concerns. With the front brake rattling and steering wheel shaking, it is possible there was a part...

Q: Q: AC not working

While there could be a variety of different reasons as to why your air conditioner is not blowing cold in your Mustang as it should be, the most common problem is low refrigerant. Unfortunately just topping off the radiator with...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.