What causes misfire on cylinder 4?
P0304 indicates that cylinder number 4 is experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder. A misfire from one or more cylinders can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure.
Will check engine come on for misfire?
On modern vehicles, the check engine light will also pop on when there’s a misfire. When the check engine light illuminates, your car’s primary computer, which is often referred to as the powertrain control module (PCM), will store a diagnostic trouble code (DTC) in its memory.
Where are the misfire codes on my pick up?
The check engine light (CEL) will be on. One or more misfire codes (P0300-P0304) will be stored in your pick up’s PCM memory (PCM = Powertrain Control Module = fuel injection computer). P0300 Random Cylinder Misfire. P0301 Cylinder #1 Misfire. P0302 Cylinder #2 Misfire. P0303 Cylinder #3 Misfire. P0304 Cylinder #4 Misfire.
What is the error code for cylinder 4 misfire?
Error Code P0304: Cylinder 4 Four Misfire Detected. Error Code P0304 is described as Cylinder #4 Misfire Directed, which means the vehicle’s computer has detected an engine misfire, specifically with the fourth cylinder.
What should I do if my check engine light says misfire?
If your “Check Engine” light diagnosis shows a generic cylinder misfire code, you should start with the most likely culprits first. Fortunately, these are also the cheapest and easiest. Spark plugs are as low as $2 each, and can be swapped in about an hour with varying difficulty.
Can a bad spark plug cause an engine to misfire?
If you have separated spark plugs, unplug each coil to see if you can find out if any cylinders are not responding. Replace if you find one faulty or have a trouble code stored for one ignition coil. 2. Bad Spark Plug The second most common cause of a misfire is bad spark plugs.