Hi!
(UPD:IF POSSIBLE, MOVE THIS THREAD TO N54 section, my bad posting here.)
So i have a "10 335i with 113k on it.
I just did the spark plugs and coils (all new), valve cover gasket (had some minor oil leaks from old one) and water pump+thermostat proactively, since the original got me through 113k, but decided to be on a safe side.
Started the car, sounds rough like a tractor (even with ~700 rpms, after start), getting P0304 (cylinder 4 misfire).
New spark plugs are NGK.
tried putting old spark plug, switching with the next cylinder, as well as the coils.
What of all stuff should i be checking next?
When taking out spark plug it seems like it its in gasoline (though not soaked in it, but i can feel it being there), can't be sure if just because I'm trying to find issue or that may be injector leak.
But would it start suddenly or i should check something else first?
intake valve haven't been cleaned in 60k (at least, thats when i got the car)
Im definitely gonna be doing that , though i just suppose that there is something wrong with the job I've done, then just randomly with something else at the same time, but can't be sure as i don't know for sure, since i was trying to do a pretty careful and clean job.
found this
MISFIRE thread
http://ift.tt/1t8s5mz
gonna try to clean the VANOS solenoid
Will be thankful to any pointers, would prefer DIY, since out of warranty and
working at home anyways.
thanks
UPD:IF POSSIBLE, MOVE THIS THREAD TO N54 section, my bad posting here.
UPD2:
few things happened, while doing the job:
- replaced one pipe (that goes from VCG to Air Intake), since broke old one
-there are 2 vac pipes going above Valve Cover, did cut them with a razor blades and reconnected after i was done. Seem there is now air leak, could one cause one cylinder misfire?
(UPD:IF POSSIBLE, MOVE THIS THREAD TO N54 section, my bad posting here.)
So i have a "10 335i with 113k on it.
I just did the spark plugs and coils (all new), valve cover gasket (had some minor oil leaks from old one) and water pump+thermostat proactively, since the original got me through 113k, but decided to be on a safe side.
Started the car, sounds rough like a tractor (even with ~700 rpms, after start), getting P0304 (cylinder 4 misfire).
New spark plugs are NGK.
tried putting old spark plug, switching with the next cylinder, as well as the coils.
What of all stuff should i be checking next?
When taking out spark plug it seems like it its in gasoline (though not soaked in it, but i can feel it being there), can't be sure if just because I'm trying to find issue or that may be injector leak.
But would it start suddenly or i should check something else first?
intake valve haven't been cleaned in 60k (at least, thats when i got the car)
Im definitely gonna be doing that , though i just suppose that there is something wrong with the job I've done, then just randomly with something else at the same time, but can't be sure as i don't know for sure, since i was trying to do a pretty careful and clean job.
found this
MISFIRE thread
http://ift.tt/1t8s5mz
gonna try to clean the VANOS solenoid
Will be thankful to any pointers, would prefer DIY, since out of warranty and
working at home anyways.
thanks
UPD:IF POSSIBLE, MOVE THIS THREAD TO N54 section, my bad posting here.
UPD2:
few things happened, while doing the job:
- replaced one pipe (that goes from VCG to Air Intake), since broke old one
-there are 2 vac pipes going above Valve Cover, did cut them with a razor blades and reconnected after i was done. Seem there is now air leak, could one cause one cylinder misfire?
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