Cylinder 10 Misfire Detected
What does P0310 mean?
The P0310 code means the vehicle's onboard diagnostic system has detected: Cylinder 10 Misfire Detected. This is a critical severity code.
Common Symptoms
- Engine misfire on cylinder 10
- Rough idle and vibration
- Check Engine Light flashing
- Reduced power output
- Strong exhaust odor or unburned fuel smell
Probable Causes (Ranked by Likelihood)
- Faulty spark plug or ignition coil on cylinder 10 Very High
- Fuel injector failure on cylinder 10 High
- Low compression in cylinder 10 Moderate
- Vacuum leak near cylinder 10 intake Moderate
- Worn camshaft lobe or timing chain issue Low
Step-by-Step Diagnostic Procedure
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Inspect and replace spark plug on cylinder 10 -- check gap and electrode condition
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Swap ignition coil from cylinder 10 with a known-good cylinder and retest
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Check fuel injector resistance and operation using a noid light and multimeter
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Perform a compression test on cylinder 10 -- should be within 10% of the highest cylinder
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Use a smoke machine to check for vacuum leaks near cylinder 10 intake runner
Frequently Asked Questions
Can I drive with code P0310?
You can drive short distances if the Check Engine Light is steady. If it is flashing, stop driving immediately as catalytic converter damage can occur rapidly.
What vehicles have a cylinder 10?
Only V10 engines have a cylinder 10. Common examples include the Ford Triton 6.8L V10, Dodge Viper V10, and Lamborghini V10 engines.
Should I replace all spark plugs if only cylinder 10 misfires?
While you only need to replace the failed plug, it is good practice to replace all spark plugs as a set if they are near their service interval, especially on V10 engines where labor is significant.