Q: 2c9d code and misfires on the cylinders 4, 5, and 6.
Massive valve cover gasket leak...vehicle had a pre cat 02 code 2c9d....gasket replaced....code still there now misfires on 456
Recommended Services
| Engine is misfiring Inspection | $94.99 - $114.99 | Get a Quote |
Hi there. The oil could have gotten on the spark plugs causing the plugs to not fire. Take out the spark plugs and see if they are covered in oil. If they are clean them off with carburetor cleaner and put them back in. Then retest the condition. If the plugs are not covered in oil, then check the spark plug wires and make sure that they are pushed in all the way. For the light being on, check the upstream O2 sensor for any broken wires. If you need further assistance with your misfire, then seek out a professional, such as one from Your Mechanic, to help you.
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
What others are asking
How do you use the heated side view mirrors?
If your car is equipped with heated side view mirrors, you have a convenient way to clear away ice, snow and fog from your mirrors. Don’t worry, using your heated mirrors is actually very simple. Just push the rear Defrost...
Window not working
Hello! That is a problem that several owners of the 350Z have faced. I personally have repaired three 350Z windows, and all three had a malfunction of the driver's side window; in each case, the cause was the driver's side...
Speedometer and Odometer stopped working.
The speedometer on your Mustang is electronically controlled. The speedometer is powered on the light green with yellow stripe wire from the #8 fuse in the dash panel fuse box. The grey/black and the green/orange wires go to the vehicle...
My ac is blowing but not cooling
Hello. An AC that does blow cold air can be caused by many things. A few common causes are low refrigerant, a faulty pressure switch (https://www.yourmechanic.com/services/ac-pressure-switch-replacement), or a bad compressor (https://www.yourmechanic.com/services/ac-compressor-replacement). The component responsible for blowing air is the blower...
The passenger door is stuck shut. It won't open from the inside or the outside.
You are probably correct that it is not fully unlatching. The Mini door lock actuators (part electric, part mechanical) have what is essentially a two-stage lock, and can become "double-locked". Sometimes, exercising the "unlock/lock/unlock" cycle multiple times will yield just...
Car keeps dying and when you try to start it back up it acts like there is no power to the starter
Hello, and thank you for writing in. When diagnosing this type of no-start, there are several things you will want to test first to make sure the basic charging system is working to supply the starter with power. When driving,...
Where is the FPDM on a 2007 Ford Expedition?
Hey there. This video should help you locate the FPDM (https://www.youtube.com/watch?v=S-ryMAsHKos) on the 2007 Expedition and resolve whatever problems you're experiencing. If this doesn't help - contact your local Ford dealership and ask them for a detailed schematic for your...
Engine light Problem
U1900 is a communications failure and the other code is possibly setting simply because the controller (U1900) that is not reporting controls the ABS module. The circuits between the anti-lock brake system (ABS) module, the instrument cluster, the power train...
What does it mean for a nissian maxima 2007 for a service engine soon
Claimed by Jeff Engstrom
Related articles
The Check Engine Light Demystified
Your car Check Engine Light can mean many things. The Check Engine Light comes on when there's an electrical or mechanical problem with your car.
A Buyer’s Guide to the 2012 BMW X5 xDrive35d
The The 2012 BMW X5 xDrive35d offer contour seats and smooth acceleration. The suspension offers a smooth ride to the driver and passengers in the vehicle, even for long road trips. It can handle tight curves without any problem while...
Symptoms of a Bad or Failing Ignition Cable
Common signs include a decrease in power, acceleration, and fuel efficiency, the Check Engine Light coming on, and visible damage to the cables.
Browse other content
Cities
Services