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

asked by on October 25, 2016

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.

Spark Plugs Replacement $113.11 - $716.47 Get a Quote
Fuel Injector Replacement $400.56 - $3968.30 Get a Quote
Mass Airflow Sensor Replacement $188.36 - $786.53 Get a Quote
Engine is misfiring Inspection $94.99 - $114.99 Get a Quote

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I permanently disable the rear view monitor system?
Your car’s rear view monitor system is designed to provide you with greater safety in situations where you need to see behind the car when backing up. However, it can be disabled both temporarily and permanently (it can be enabled...
How do I return the personalization settings to factory settings?
At any point, you can return all of the personalization in the vehicle to factory settings. This is very easy to accomplish: 1. Turn on the infotainment system. 2. Press the CONFIG button to select the Configuration Settings menu. 3....
Car is vibrating at high speeds
Hello. Thanks for writing in. Poorly maintained tires are the number one reason for vibration (https://www.yourmechanic.com/services/car-is-shaking-or-vibrating-inspection) over 60MPH. Having them checked was a great idea. Another quick step is to make sure they are all properly inflated at the correct...
Will a 2016 lancer auto lock the doors with the key still in the ignition?
Hi there. A new Lancer should not be locking the driver door with the key in the ignition, however that is only when the key is in the ON or ACCESSORY position. When you have the key out of the...
Diesel particulate filter warning light is on.
Hello, The DPF light relates to the diesel particulate system in your vehicle which includes a filter in the exhaust system that is designed to capture excessive soot and carbon that is a bi-product of the diesel combustion process. Over...
Automatic transmission shifting at high rpm
Did you change the transmission filter? If the filter is blocked, that can degrade hydraulic pressure and cause these symptoms. Another cause is malfunctions in electronic controls including the throttle position sensor. The shift solenoids, and shift valving (in the...
Hard to shift gears in traffic jam
The clutch and transmission on your vehicle are fairly straightforward systems. If virtually all of it has been replaced and yet it still doesn't work, that is frankly a guarantee that the cause of the problem is faulty, inept, careless...
Truck will not start or crank with the key bit all lights are on, 2008 6.6L gmc 2500
It sounds like what you are describing may be related to a faulty starter relay or some faulty wiring that may not be producing a proper connection to the starter. The starter relay (https://www.yourmechanic.com/services/starter-relay-replacement) directs power from the battery to...
Lexus LS430 Cruise control speed limit
The 2001 LS430 Owner's Manual (http://drivers.lexus.com/t3Portal/document/om-s/OM50545/pdf/OM50545.pdf) refers to an upper limit of 85 MPH in terms of cruise control settings. Apart from that, there is no ECU limit or user-programmable upper speed limit. On some cars, you can program individual...

Related articles

The Best Used Cars to Buy If You Live in a Hilly Area
Do Do you live in terrain that is hilly? Do your city streets feature plenty of inclines and declines that can be nothing short of treacherous in miserable weather? If so, when it’s time to purchase a car you’re looking...
How Long Does a Fuel Gauge Sender Last?
The The amount of gas in a car plays a huge role in its level of functionality. The only way that you will be able to keep the fuel gauge in your car accurate is by having a fully functional...
How to Diagnose and Repair a Faulty Windshield Washer Pump
The The role of your vehicle’s windshield washer pump (https://www.yourmechanic.com/services/windshield-washer-pump-replacement) is to take the washer fluid from the reservoir and circulate it through the tubes to the car’s windshield washer nozzles (https://www.yourmechanic.com/services/windshield-washer-nozzles-replacement). The nozzles then spray the washer fluid on...