misfire won't go away...HELP

Nick54 · 05-20-2019, 01:27 PM

2010 335i with 71000kms had the hpfp changed... new coils new injectors.. I changed the spark plugs 500kms before the injectors.. for 2 weeks after the injectors, the car ran fine but now I have a check engine light and I can feel and hear it misfiring.. feels fine once it's warm but still stutters at idle

engine codes
P0300 - multiple cylinder misfire
P0302 - cylinder 2 misfire
P0304 - cylinder 4 misfire
P0305 - cylinder 5 misfire
29CE - misfire detection 2 in 4. ignition sequence
29CC misfiring several cylinders

any suggestions?

dpaul · 05-20-2019, 02:02 PM

Can you actually read anything in that image you posted?

Nick54 · 05-20-2019, 02:17 PM

Quote:

Originally Posted by dpaul

Can you actually read anything in that image you posted?

I updated the post sorry about that!

Jeff@TopGearSolutions · 05-20-2019, 03:53 PM

Stock or modified?

If modified, what other modifications and tune?

Have you cleaned/walnut blasted your intake valves yet?

What kind of spark plugs and what gap?

Nick54 · 05-20-2019, 04:05 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

Stock or modified?

If modified, what other modifications and tune?

Have you cleaned/walnut blasted your intake valves yet?

What kind of spark plugs and what gap?

fully stock. never walnut blasted . Delphi coils, index 12 injectors and OEM Bosch plugs.

do you think the intakes might really be the cause?

05-20-2019, 01:27 PM	#1
Nick54 Private 10 Rep 68 Posts Drives: 2010 e92 335i xdrive manual Join Date: Apr 2018 Location: Montreal iTrader: (0)	2010 335i with 71000kms had the hpfp changed... new coils new injectors.. I changed the spark plugs 500kms before the injectors.. for 2 weeks after the injectors, the car ran fine but now I have a check engine light and I can feel and hear it misfiring.. feels fine once it's warm but still stutters at idle engine codes P0300 - multiple cylinder misfire P0302 - cylinder 2 misfire P0304 - cylinder 4 misfire P0305 - cylinder 5 misfire 29CE - misfire detection 2 in 4. ignition sequence 29CC misfiring several cylinders any suggestions? Attached Images
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05-20-2019, 02:02 PM	#2
dpaul Lieutenant Colonel 654 Rep 1,893 Posts Drives: 2009 E90 335xi, 2011 E93 M3 Join Date: Dec 2012 Location: Boston iTrader: (3)	Can you actually read anything in that image you posted?
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05-20-2019, 03:53 PM	#4
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Stock or modified? If modified, what other modifications and tune? Have you cleaned/walnut blasted your intake valves yet? What kind of spark plugs and what gap?
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