Spark Plug Gaps

NaciernoF10 · 02-23-2018, 08:40 AM

hitenrallye glad to hear that brother and was able to help!! sometimes the gap will cause those issues

hitenrallye · 02-23-2018, 11:39 AM

NaciernoF10 Thank you, by the way my clutch started slipping yesterday. I have got it booked in to have ssp clutch done and evolve stage 2 +

JK-M5 · 03-06-2018, 02:36 PM

Looks like the Misfire has finally gone which is a relief. been a right pain this 1, but new coil packs, Maf sensors and New spark Plugs later we have a cure.

looks like the spark plug gaps have been a big factor in all this plus the Contaminated Maf sensors from using Oily Filters.
Plugs Gapped to 0.018 seems to be the sweet spot for my car anyway with stage 2 software.

on to other issues now, how many times can a spark plug be removed and fitted again before it becomes a problem?

had the car out last week after the bad weather had gone seems I have been lucky to not have lost the car, spark plug actually snapped whilst I was out on a test run, fuel spilling out of the cylinder head, looks like the pressure pushed the remainder of the plug and coil pack out disconnecting the Maf sensor on exit the smell of fuel was crazy, stopped as fast I could lifted the bonnet to see the aftermath the plugs where fitted 3 times from new torqued to 22nm each time anyone had issues like this or is it just me

Used2be · 03-06-2018, 04:49 PM

Quote:

Originally Posted by jonathon kelly

on to other issues now, how many times can a spark plug be removed and fitted again before it becomes a problem?

the plugs where fitted 3 times from new torqued to 22nm each time anyone had issues like this or is it just me

Very strange! Are the broken center electrode and the ceramic insulator still in the cylinder? I've had plugs in and out many more times with no problems, but not in this motor. More investigation required.

allmotor_2000 · 03-06-2018, 05:25 PM

Quote:

Originally Posted by jonathon kelly

Looks like the Misfire has finally gone which is a relief. been a right pain this 1, but new coil packs, Maf sensors and New spark Plugs later we have a cure.

looks like the spark plug gaps have been a big factor in all this plus the Contaminated Maf sensors from using Oily Filters.
Plugs Gapped to 0.018 seems to be the sweet spot for my car anyway with stage 2 software.

on to other issues now, how many times can a spark plug be removed and fitted again before it becomes a problem?

had the car out last week after the bad weather had gone seems I have been lucky to not have lost the car, spark plug actually snapped whilst I was out on a test run, fuel spilling out of the cylinder head, looks like the pressure pushed the remainder of the plug and coil pack out disconnecting the Maf sensor on exit the smell of fuel was crazy, stopped as fast I could lifted the bonnet to see the aftermath the plugs where fitted 3 times from new torqued to 22nm each time anyone had issues like this or is it just me

I have only seen this when plugs were over-torqued while hot.

M5 TT · 03-07-2018, 04:51 AM

wow did your engine survive?? Where are the broken bits.

I have had plugs out over 10 times (not on this car, high power cossies, evo, GTR etc) I never torque them I just know when they are tight and never had a problem.

hope it survived

JK-M5 · 03-07-2018, 11:00 AM

yeah got off lightly this time the pressure must of pushed out the remaining electrode, had a Boroscope down inside the cylinder to check for the missing pieces of the plug, looks clean and no damage to the piston or the side walls been really lucky, I don't know for sure if they had been over torqued or whilst the engine was hot but we are sending the plugs back to Bosch to be inspected

Changed all the plugs out for new once this occurred.

scary really, plugs where from the main dealer

JK-M5 · 05-05-2018, 01:24 PM

Can someone tell me the correct Codes for a step colder plug from NGK

Seems to be a little confusion around the codes

induc916 · 05-06-2018, 10:28 AM

With stage 2, Intake, DP, Exhaust, flash tune from activeautowerke is it recommend to gap the plugs?

apexlocator · 05-06-2018, 10:35 AM

Quote:

Originally Posted by Mboy

Can someone tell me the correct Codes for a step colder plug from NGK

Seems to be a little confusion around the codes

I believe its ngk 97506. Thats what I'm running gapped to 0.020"

Rated M Roadster · 05-06-2018, 10:42 AM

Quote:

Originally Posted by apexlocator

Quote:

Originally Posted by Mboy

Can someone tell me the correct Codes for a step colder plug from NGK

Seems to be a little confusion around the codes

I believe its ngk 97506. Thats what I'm running gapped to 0.020"

Those are correct, but they are equivalent to stock plugs. Don't think there is a known colder plug.

Koza · 02-13-2019, 03:45 AM

Hi guys,

i have an M5 F10 and i got Stage 1 (700HP) before 15000km. (9000 miles).
Yesterday i had issues in high RPM.
We removed all sparkplugs and one was damaged.
Look here:

Now i bought new stock plugs and now it runs again as he should.

I found this post here and now i am thinking about to buy the sparkplugs from ngk with one step colder. or better two steps?

Thanks and greets from germany!

M5Rick · 02-13-2019, 03:58 AM

Quote:

Originally Posted by Koza

Hi guys,

i have an M5 F10 and i got Stage 1 (700HP) before 15000km. (9000 miles).
Yesterday i had issues in high RPM.
We removed all sparkplugs and one was damaged.
Look here:

Now i bought new stock plugs and now it runs again as he should.

I found this post here and now i am thinking about to buy the sparkplugs from ngk with one step colder. or better two steps?

Thanks and greets from germany!

One step should do it.

OneExtra · 02-13-2019, 04:03 AM

Is going Stage 1 known to damage plugs? What happened to the bit that's missing?

Koza · 02-13-2019, 04:04 AM

Quote:

Originally Posted by OneExtra

Is going Stage 1 known to damage plugs? What happened to the bit that's missing?

i think it burned away.

OneExtra · 02-13-2019, 04:12 AM

Quote:

Originally Posted by Koza

i think it burned away.

Ah OK good to know its gone.

I have a Stage ! tune pushing about 725bhp at the crank and the car has 12,000 miles

I wonder why yours did what it did?

Who did the tune?

Does the quality of fuel make a difference to this issue?

Sorry for so many questions just want to avoid any issues

Thanks

Koza · 02-13-2019, 04:24 AM

Quote:

Originally Posted by OneExtra

Ah OK good to know its gone.

I have a Stage ! tune pushing about 725bhp at the crank and the car has 12,000 miles

I wonder why yours did what it did?

Who did the tune?

Does the quality of fuel make a difference to this issue?

Sorry for so many questions just want to avoid any issues

Thanks

Maybe my has over 700 too. Downpipes without CATs are fitted too.
Was a tuner in germany.
I think the quality of fuel can make differences, i only drive 102 ROZ (its the best in germany)

OneExtra · 02-13-2019, 04:45 AM

Quote:

Originally Posted by Koza

Maybe my has over 700 too. Downpipes without CATs are fitted too.
Was a tuner in germany.
I think the quality of fuel can make differences, i only drive 102 ROZ (its the best in germany)

Reading the posts it seems that this issue is more evident when catless downpipes are fitted

M5Rick · 02-13-2019, 04:55 AM

Quote:

Originally Posted by Koza

Maybe my has over 700 too. Downpipes without CATs are fitted too.
Was a tuner in germany.
I think the quality of fuel can make differences, i only drive 102 ROZ (its the best in germany)

Last time I drove through Germany a few years ago max ron available was Aral 101.
What station(s) do the 102 now.

Koza · 02-13-2019, 05:45 AM

Quote:

Originally Posted by M5theonlyone

Last time I drove through Germany a few years ago max ron available was Aral 101.
What station(s) do the 102 now.

Aral is 102.
Shell is 100

M5Rick · 02-13-2019, 06:04 AM

Quote:

Originally Posted by Koza

Aral is 102.
Shell is 100

Thanks.

Koza · 02-27-2019, 02:40 PM

Hi guys.
So now i want to order the sparks with one step colder.
But which gap i should choose?

Downpipes with 200 cell Cats.
Stage 1 Software (roundabout 700hp)
BMC inlets.

Please help me, thank you

02-23-2018, 08:40 AM	#23
NaciernoF10 Private First Class 83 Rep 193 Posts Drives: F90 M5 Join Date: Nov 2016 Location: Palm beach , FL iTrader: (0)	hitenrallye glad to hear that brother and was able to help!! sometimes the gap will cause those issues Last edited by NaciernoF10; 02-23-2018 at 10:01 AM..
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02-23-2018, 11:39 AM	#24
hitenrallye New Member 0 Rep 22 Posts Drives: BMW 335i Join Date: Jun 2013 Location: Herts iTrader: (0)	NaciernoF10 Thank you, by the way my clutch started slipping yesterday. I have got it booked in to have ssp clutch done and evolve stage 2 +
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03-06-2018, 02:36 PM	#25
JK-M5 Second Lieutenant 61 Rep 240 Posts Drives: MBB F90 M5 Join Date: Jan 2016 Location: United Kingdon iTrader: (0)	Looks like the Misfire has finally gone which is a relief. been a right pain this 1, but new coil packs, Maf sensors and New spark Plugs later we have a cure. looks like the spark plug gaps have been a big factor in all this plus the Contaminated Maf sensors from using Oily Filters. Plugs Gapped to 0.018 seems to be the sweet spot for my car anyway with stage 2 software. on to other issues now, how many times can a spark plug be removed and fitted again before it becomes a problem? had the car out last week after the bad weather had gone seems I have been lucky to not have lost the car, spark plug actually snapped whilst I was out on a test run, fuel spilling out of the cylinder head, looks like the pressure pushed the remainder of the plug and coil pack out disconnecting the Maf sensor on exit the smell of fuel was crazy, stopped as fast I could lifted the bonnet to see the aftermath the plugs where fitted 3 times from new torqued to 22nm each time anyone had issues like this or is it just me Attached Images
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03-07-2018, 04:51 AM	#28
M5 TT Captain 169 Rep 657 Posts Drives: F90 M5 Join Date: Sep 2008 Location: UK iTrader: (0)	wow did your engine survive?? Where are the broken bits. I have had plugs out over 10 times (not on this car, high power cossies, evo, GTR etc) I never torque them I just know when they are tight and never had a problem. hope it survived __________________ 540i GTR-R35, F90 M5, X3MC, RS3, RS7, M5, S7, S3, RS3, RS6, GTR R35, 996 Turbo, M5, RS6 V10, Cayenne Turbo S
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03-07-2018, 11:00 AM	#29
JK-M5 Second Lieutenant 61 Rep 240 Posts Drives: MBB F90 M5 Join Date: Jan 2016 Location: United Kingdon iTrader: (0)	yeah got off lightly this time the pressure must of pushed out the remaining electrode, had a Boroscope down inside the cylinder to check for the missing pieces of the plug, looks clean and no damage to the piston or the side walls been really lucky, I don't know for sure if they had been over torqued or whilst the engine was hot but we are sending the plugs back to Bosch to be inspected Changed all the plugs out for new once this occurred. scary really, plugs where from the main dealer
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05-05-2018, 01:24 PM	#30
JK-M5 Second Lieutenant 61 Rep 240 Posts Drives: MBB F90 M5 Join Date: Jan 2016 Location: United Kingdon iTrader: (0)	Can someone tell me the correct Codes for a step colder plug from NGK Seems to be a little confusion around the codes
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05-06-2018, 10:28 AM	#31
induc916 Second Lieutenant 116 Rep 248 Posts Drives: 2014 M6 Join Date: Mar 2018 Location: Indiana iTrader: (0)	With stage 2, Intake, DP, Exhaust, flash tune from activeautowerke is it recommend to gap the plugs?
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02-13-2019, 03:45 AM	#34
Koza New Member 2 Rep 5 Posts Drives: BMW M5 F10 Join Date: Feb 2019 Location: Germany iTrader: (0)	Hi guys, i have an M5 F10 and i got Stage 1 (700HP) before 15000km. (9000 miles). Yesterday i had issues in high RPM. We removed all sparkplugs and one was damaged. Look here: Now i bought new stock plugs and now it runs again as he should. I found this post here and now i am thinking about to buy the sparkplugs from ngk with one step colder. or better two steps? Thanks and greets from germany!
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02-13-2019, 04:03 AM	#36
OneExtra Lieutenant Colonel 811 Rep 1,847 Posts Drives: None Join Date: Aug 2017 Location: England iTrader: (0)	Is going Stage 1 known to damage plugs? What happened to the bit that's missing?
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02-27-2019, 02:40 PM	#44
Koza New Member 2 Rep 5 Posts Drives: BMW M5 F10 Join Date: Feb 2019 Location: Germany iTrader: (0)	Hi guys. So now i want to order the sparks with one step colder. But which gap i should choose? Downpipes with 200 cell Cats. Stage 1 Software (roundabout 700hp) BMC inlets. Please help me, thank you
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