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Old 11-21-2017, 12:42 AM
Uncle ENzo's Avatar
Uncle ENzo Uncle ENzo is offline
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Uncle ENzo
Default Spark plug oddness (E91)

So my pal drives down from NYC for me to do a little tune up on his E91. Nothing special. Brakes, belts and tune up. So everything is humming along until I put in the Bosch Double Platinum plugs. I put in those along with fresh OEM coils and the sob wont run yet alone even start. So after swapping back in the old coils, I realize the issue is with the plugs.

Gap was fine and there was no reason I could find why it wouldnt run. I ended up tossing in some NGKs and it was fine. Ive never had this happen with plugs. I could see a rough run or some burping, but no start???
1976 911S
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Acura MDX-wife
2009 E91 Touring
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Old 11-21-2017, 11:49 PM
HughA44s HughA44s is offline
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Well that is a new one on me. I think I have always used NGKs.
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Old 12-11-2017, 07:57 PM
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Mark Hubley Mark Hubley is offline
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FWIW, I just swapped plugs on my new-to-me E90 325i with 110k mikes. I put in NGK Laser Iridium plugs (checked the gaps at 0.040, they were all there out of the box), and the car runs great.
2000 Carrera (flat six)
2006 325i (inline six)
2005 Tacoma (V6)

Formerly owned P-cars:
1987 924S
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Old 12-15-2017, 08:37 PM
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scott scott is offline
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Default hmmm

i would be suspect of an intermittent 12v supply connection on the coil...

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Old 12-16-2017, 09:31 PM
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Clarke Clarke is offline
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NGK are the only plugs to run in a BMW in my opinion.
Searchin' for my lost shaker of salt.


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'93 BMW 325is
'54 Chevy 210
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