Rough engine at idle and low rpm, bad injectors?

paul_sarky · 02-07-2020, 02:23 AM

I had my N63 replaced in my f10 less than 10k miles ago, but they used pretty much everything besides the spark plugs from the old engine. 95k miles. when idling, it seems like there's an occasional bad fire, not bad enough for the cel to go on, and also when accelerating, it seems like the power isn't consistent. Its the worst when accelerating when the engine is cold around 1k rpms.

If its a bad injector, is there a way I can test them to see which one it is?

Dirty fuel filter maybe?

Any suggestions?

Unspec · 02-07-2020, 10:00 AM

Could also be O2 sensors.

02-07-2020, 02:23 AM	#1
paul_sarky Private 38 Rep 99 Posts Drives: 2012 BMW 550i M-Sport Join Date: Sep 2015 Location: Seattle, WA iTrader: (0)	Rough engine at idle and low rpm, bad injectors? I had my N63 replaced in my f10 less than 10k miles ago, but they used pretty much everything besides the spark plugs from the old engine. 95k miles. when idling, it seems like there's an occasional bad fire, not bad enough for the cel to go on, and also when accelerating, it seems like the power isn't consistent. Its the worst when accelerating when the engine is cold around 1k rpms. If its a bad injector, is there a way I can test them to see which one it is? Dirty fuel filter maybe? Any suggestions?
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02-07-2020, 10:00 AM	#2
Unspec Colonel 1295 Rep 2,587 Posts Drives: 2015 BMW 535xi Join Date: Apr 2019 Location: DMV iTrader: (1)	Could also be O2 sensors. __________________ 2015 BMW 535xi Bootmod3 Stage 2 \| ER charge pipe \| ER Catted DP \| Remus Exhaust \| Gplus FMIC \| KW V3 \| Turner Monoball thrust arm bushings \| Wallet regrets ISTA VM Setup/Tutorial
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