11-02-2018, 09:20 AM | #1 |
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B58 spark plug change
Hi everyone
I've own a 2016 340i xdrive that just reached 90,000km. The agreement I had with my dealership for free servicing apparently expired at 80,000km, a fact I discovered when they contacted me to inform me the car was due for about $1500 worth of "required maintenence". Needless to say I wasn't pleased, and decided out of spite to do all the work myself, even if I spent just as much doing it myself. I figured I'd learn something at least. The oil change was easy, as was the brake fluid flush (there's a really good youtube video on that here: https://youtu.be/mbK6zB2yglM), the tire alignment I got done at a local shop, and I think the "AC/heating system refresh" is probably BS, or at least not critical to the vehicle operation. What I am hung up on is the spark plug change. I don't know what's in there now, but all the research I've done online suggested I swap them out for these: https://www.autozone.com/ignition-tu...lug/941022_0_0. I've got a special thin-walled 14mm 12-point socket online, and I'm ready to go, but I just wanted to verify a couple things really quick before I move forward:
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11-03-2018, 08:53 AM | #2 |
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Buy Bosch/OE plugs. On these the gap is pre-set. Part no 12120040551
Buy a torque wrench and use a can of air to blow the wells clean prior to pulling the existing plugs. You'll also need the appropriate extension and wobble adapter to reach the back plug.
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01-09-2020, 08:30 PM | #4 | |
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Quote:
https://www.newtis.info/tisv2/a/en/f...ugs/1VnYgfptJx
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01-10-2020, 03:56 PM | #5 |
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Solid advice. Should be pinned.
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01-19-2020, 05:58 PM | #6 | |
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Torque to the correct settings, also personally for the cheap cost of around £40 I'd also replace all the coils as they die soon after spark plugs! Apart from that not much to it, nice simple job mate! Fuck the dealers and DIY!
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01-20-2020, 07:24 AM | #7 |
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FWIW, I would still check the gap of each plug before installing to make SURE it is correct & hasn't been bumped out of adjustment
The result if not gapped correctly could be misfires/codes which would mean tearing into the engine for plug access again But yes, only time manual gapping should be necessary is if for instance you are installing the colder plugs due to engine/ignition coil mods done and you wish to use a tighter gap
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01-22-2020, 09:00 PM | #9 | |
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I'm going with the NGK one step cooler, which are basically the same as the Bosch ones that come stock. our part number is 95770 and Berger motorsports has a gaping and installation kit, as well as 6 of them in a discount package deal. without the tools they are $84. the Bosch mentioned are solid choices as well, because OEM. |
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02-03-2020, 09:56 AM | #10 |
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Just did a spark plug change this past weekend on my 2016 340. Used NGK 94201s gapped at .023 in anticipation of my MP stage 3 flash. The spark plug change was absolutely simple. Took about 45 minutes which included removing the cowl cover pieces and the strut tower brace to provide unobstructed access to the rearmost plug. This is the best practice I think. It would have been a PITA getting that back plug out and in without removing the brace.
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02-03-2020, 02:21 PM | #11 |
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NGK plugs
Guy's put a set of Dealer supplied plugs in 4 months ago, Champion garbage but having read of a few plug issues just bought a new set of NGK 94201s my 2016 340i has had a stage one flash tune so what plug gap would you recommend me to set them at please.
Only done 29K but reason I changed them was while I was servicing it I removed a plug to look see how they were and the electrode was quite worn and the gap was larger than it should be by a fair bit lol, so stupidly not thinking bought a new set, but now I want them gone and the NGKs in it |
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02-23-2020, 01:07 PM | #13 |
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Drives: 2016 340i xDrive
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02-23-2020, 01:20 PM | #14 | ||
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Quote:
Quote:
*Tightening torque for this spark plug is 23 ± 3 Nm, a special 14mm, 12 point spark plug socket is required for removal and installation of this plug.
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Last edited by 1QuikWS6; 02-23-2020 at 01:26 PM.. |
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03-12-2020, 05:51 AM | #15 |
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I've used NGK on my E46 and my F31 and I will use them on my F87 when the time comes.
Been nothing short of pleased with them. I'm probably an old school guy but I check gaps every time. You never know if something gets bumped or whatever. Just makes me feel better.
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