Misfire at idle
03-25-2013, 07:01 PM
#1
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2012 E63 Bi Turbo
Misfire at idle
Looking for suggestions re rough idle, 2003 E55. Stage 1 Ec tune.
Cloud of blue smoke very occasionally at start up.
Car runs 300k+(indicated) so pulls strong etc.
Any ideas, faulty injector......?
Thanks
Cloud of blue smoke very occasionally at start up.
Car runs 300k+(indicated) so pulls strong etc.
Any ideas, faulty injector......?
Thanks
03-25-2013, 07:12 PM
#4
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go to a autozone or pep boys and use their scanner and see which cylinder it is..
should be between P0300-P03008
last number indicates which cylinder, if its only one then take the injector and swap with another and see if it happens again
should be between P0300-P03008
last number indicates which cylinder, if its only one then take the injector and swap with another and see if it happens again
03-25-2013, 07:20 PM
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2012 E63 Bi Turbo
Thanks for your interest.
Have carried out scan with the following results.
P202B-2
P2045
P2043
Lamda control 3 way Cat 7/8 not reading.
2ndary cats have been deleted.
Can injectors be removed without removing s/c ?
Could this be something EC could assist with perhaps...?
Cheers
Have carried out scan with the following results.
P202B-2
P2045
P2043
Lamda control 3 way Cat 7/8 not reading.
2ndary cats have been deleted.
Can injectors be removed without removing s/c ?
Could this be something EC could assist with perhaps...?
Cheers
03-25-2013, 07:28 PM
#6
MBWorld Fanatic!
none of those are misfires
idle control and redact temp sensor and solenoid
ask if EC can help could be in the tune or else can have to do with your throttle body or bypass valve
idle control and redact temp sensor and solenoid
ask if EC can help could be in the tune or else can have to do with your throttle body or bypass valve
03-25-2013, 07:42 PM
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2012 E63 Bi Turbo
Not certain that it is a misfire.
I think I will remove injectors and test, does this require s/c/ removal...?
I think I will remove injectors and test, does this require s/c/ removal...?
Last edited by barlow100; 03-25-2013 at 07:46 PM.
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03-25-2013, 08:44 PM
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'06 S65 AMG W220 12.31@119_MPH (Stock)
I would obtain a compression gauge and do a check of all the cylinders to see if the pressure are all within 10-15% of each other.
I have a feeling that you have some unbalanced cylinder compressions which could contribute to the rough idle since you did not have any misfires .
I have a feeling that you have some unbalanced cylinder compressions which could contribute to the rough idle since you did not have any misfires .
01-08-2015, 01:56 PM
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2007 C230 sport
07 C230 misfiring at low RPM's
My 07 C230 sport has 110k miles on it. Changed the spark plugs just because of the miles on the original ones. The next day I was passing a car and the check engine light ( it was already on) started blinking and then it seemed to drop off a cylinder and run very rough. Drive a few more miles, shut it off for a min or two, then re-started it and it ran smooth (until the next time) The codes I'm getting are 0301, 0410, 0331, and 0351. I've checked the plug wires to make sure they're on tight. The plugs I used were Autolite Iridiums cause Autozone didn't have the Bosch ones but that shouldn't matter should it? I've heard everything from a bad coil pack, fuel press reg, vacuum line, MAF sensor, throttle pos sensor etc... Need to try something just not sure what to try first. Any suggestions would be greatly appreciated. Thanks all
