Skip the auto shop - Our mechanics make house calls

Q: Can you cover up that a car that has a cylinder 3 misfire?

asked by on

when I purchase the car there were no problems. The car started to cut off or it would shake a little then shut off. The next thing that happen it would lose power while I was driving it. The engine light was not on and it has never came on. Can you cover up this type of problem. I now fell that I was sold a lemon. It shows a 3 cylinder misfire. I want to if this is something you can hide? I have had the car a month.
My car has an automatic transmission.

Hello and thank you for your question. You cannot cover up a misfire. Check the spark plug wires and check the spark plugs. Also, check the fuel injector to the cylinder that is misfiring and see if the injector is working.

When removing the harness to the injector with the engine running and the engine has no change, then the injector may have stopped working. To check that injector, switch it with another injector and see if the misfire is detected on another cylinder. If so, then replace the injector.

Also, check the MAF (Mass Airflow) sensor for if it is damaged or dirty.

If you need further diagnosis of your misfire condition, then seek out a professional, preferably a YourMechanic professional to help you with your vehicle.

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: Power window slow to go up

Hello, it sounds like you might have one of two possible causes for a window rising slowly. The electric motor could be getting weak, making it unable to lift the window. The other is that the window regulator is binding...

Q: Fuel economy worse than advertised

Fuel mileage is a sensitive topic no matter how it is discussed. Some drivers boast high numbers and really tally the fuel usage. Still others just fill up and do a rough estimation based on gut feeling. Before the discussion...

Q: Gas leaking for middle of car

Leaking gas is a serious concern and definitely needs to be addressed as soon as possible. Due to leaking gas being a big safety issue, I first have to recommend enlisting the assistance of a certified mechanic to look over...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...