2003 C230, #2 Misfire.
02-15-2016 | 01:10 PM
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C230 2003
2003 C230, #2 Misfire.
Hello all,
C230, 2003. The rough idle issues of my past have come back recently but worse. Several years ago, approx 2011, I replaced the camshaft sensors followed by cleaning the harness with electronic spray. Eventually it was cleaned. I replaced the O2 sensors around the same time. Cleaned throttle body, new MAF, spark plugs, and at the time what I thought could be a problem coil.
Rough idle has been gone for a loooong time but now it's back and very different from what I've encountered before. Instead the rough idle comes right after my car has warmed up and the #2 misfires. I can get it to reset by shutting the car off and restarting. I've used Techron plenty. When I look into the cylinders I can see that there is carbon build up on the piston heads. The most recent thing I've done is replace spark plugs again, replaced the #2 fuel injector, and replaced the fuel filter. When I didn't see results I used the CRC intake valve cleaner. I'm still getting the misfire. Today, I was listening closely and believe that I'm hearing a tapping noise.
Any suggestions? This forum has been helpful in my troubleshooting. It's how I've managed to come this far in the last five years.
Henry
C230, 2003. The rough idle issues of my past have come back recently but worse. Several years ago, approx 2011, I replaced the camshaft sensors followed by cleaning the harness with electronic spray. Eventually it was cleaned. I replaced the O2 sensors around the same time. Cleaned throttle body, new MAF, spark plugs, and at the time what I thought could be a problem coil.
Rough idle has been gone for a loooong time but now it's back and very different from what I've encountered before. Instead the rough idle comes right after my car has warmed up and the #2 misfires. I can get it to reset by shutting the car off and restarting. I've used Techron plenty. When I look into the cylinders I can see that there is carbon build up on the piston heads. The most recent thing I've done is replace spark plugs again, replaced the #2 fuel injector, and replaced the fuel filter. When I didn't see results I used the CRC intake valve cleaner. I'm still getting the misfire. Today, I was listening closely and believe that I'm hearing a tapping noise.
Any suggestions? This forum has been helpful in my troubleshooting. It's how I've managed to come this far in the last five years.
Henry
