2014 Bmw335i misfire after plug & coil replacement

Dirty35i · 01-15-2023, 05:42 AM

I recently done my spark plugs and coil packs due to a misfire in cylinder 6. Gapped my plugs to stock gap .35 am using bosch plugs(ZR5TPP33) and bosch coils. (BOS-0221504470) torqued to 17 ft lbs. Originally they were bosch plugs same part #. For the original coil packs, were delphis. After gapping to .35, .30,.22, as provided from many sources still am having misfires if not worse. Scanner reading multiple misfires now.

Tommy D · 01-15-2023, 08:36 AM

If you originally had a misfire and replaced the spark plugs and coils and still have misfires, I would look into fuel issues.

Dirty35i · 01-15-2023, 08:40 AM

Can a misfire cause damage a injector?? The first purchase of spark plugs (ngk one step colder) gapped at .22 also new ignition coils (bosch) was running fine until I did a small pull and got more misfires this time multiple misfires started off in cylinder 6 then jumped to 6,5,3.

01-15-2023, 05:42 AM	#1
Dirty35i New Member 2 Rep 13 Posts Drives: 2014 BMW 335i Join Date: Jan 2023 Location: NA iTrader: (0)	I recently done my spark plugs and coil packs due to a misfire in cylinder 6. Gapped my plugs to stock gap .35 am using bosch plugs(ZR5TPP33) and bosch coils. (BOS-0221504470) torqued to 17 ft lbs. Originally they were bosch plugs same part #. For the original coil packs, were delphis. After gapping to .35, .30,.22, as provided from many sources still am having misfires if not worse. Scanner reading multiple misfires now.
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01-15-2023, 08:36 AM	#2
Tommy D Private First Class 120 Rep 199 Posts Drives: '17 BMW 440i GC, 2005 BMW 330i Join Date: Oct 2022 Location: PA iTrader: (0)	If you originally had a misfire and replaced the spark plugs and coils and still have misfires, I would look into fuel issues.
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01-15-2023, 08:40 AM	#3
Dirty35i New Member 2 Rep 13 Posts Drives: 2014 BMW 335i Join Date: Jan 2023 Location: NA iTrader: (0)	Can a misfire cause damage a injector?? The first purchase of spark plugs (ngk one step colder) gapped at .22 also new ignition coils (bosch) was running fine until I did a small pull and got more misfires this time multiple misfires started off in cylinder 6 then jumped to 6,5,3.
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