R50/53 RMW tune ...constantly replacing spark plugs
#1
RMW tune ...constantly replacing spark plugs
Little advise before I start replacing things I don't need to.
Have moderately modded 06 cooper S
performance wise, upgraded cam, 15% SC pulley, CAI, Catback exhaust. RMW tune, I was using unichip before hand and had no issues. Ever since the RMW tune I have been throwing codes and have replaced plugs basically every two months.
So basically I am thinking with the RMW tune with stock injectors I am taxing them and now running lean which is fouling up the plugs.
I am getting the same end result with cylinder 2 misfire.
so can I get some advise were I may be way off here in my thinking or should I get bigger injectors?
Thanks in advance.
Have moderately modded 06 cooper S
performance wise, upgraded cam, 15% SC pulley, CAI, Catback exhaust. RMW tune, I was using unichip before hand and had no issues. Ever since the RMW tune I have been throwing codes and have replaced plugs basically every two months.
So basically I am thinking with the RMW tune with stock injectors I am taxing them and now running lean which is fouling up the plugs.
I am getting the same end result with cylinder 2 misfire.
so can I get some advise were I may be way off here in my thinking or should I get bigger injectors?
Thanks in advance.
#5
Little advise before I start replacing things I don't need to.
Have moderately modded 06 cooper S
performance wise, upgraded cam, 15% SC pulley, CAI, Catback exhaust. RMW tune, I was using unichip before hand and had no issues. Ever since the RMW tune I have been throwing codes and have replaced plugs basically every two months.
So basically I am thinking with the RMW tune with stock injectors I am taxing them and now running lean which is fouling up the plugs.
I am getting the same end result with cylinder 2 misfire.
so can I get some advise were I may be way off here in my thinking or should I get bigger injectors?
Thanks in advance.
Have moderately modded 06 cooper S
performance wise, upgraded cam, 15% SC pulley, CAI, Catback exhaust. RMW tune, I was using unichip before hand and had no issues. Ever since the RMW tune I have been throwing codes and have replaced plugs basically every two months.
So basically I am thinking with the RMW tune with stock injectors I am taxing them and now running lean which is fouling up the plugs.
I am getting the same end result with cylinder 2 misfire.
so can I get some advise were I may be way off here in my thinking or should I get bigger injectors?
Thanks in advance.
I'm guessing your tune is too rich.......
#6
Also, what brand of plugs / part number on box, and are you re-gapping them ?
Thanks.
#7
+1
Jan/RMW is ok on follow-up ...but remember his time is worth $$, it not a hobby for him, so he doesn't chat for fun...
Any changes since the tune? If so...the fix is usually a retune.
Typically custom tunes are less forgiving than stock tunes of changes...
As stated, pictures of the plugs will help, along with model , etc
Jan/RMW is ok on follow-up ...but remember his time is worth $$, it not a hobby for him, so he doesn't chat for fun...
Any changes since the tune? If so...the fix is usually a retune.
Typically custom tunes are less forgiving than stock tunes of changes...
As stated, pictures of the plugs will help, along with model , etc
Trending Topics
#8
I'm wondering the same thing, have you made any changes since the tune, even spark plug brand could effect this.
I highly doubt it's the injectors not having enough flow, if the tune was done with those injectors, they shouldn't be an issue at all, unless something else has changed.
Besides setting the plugs, we need to know what codes you are throwing.
I highly doubt it's the injectors not having enough flow, if the tune was done with those injectors, they shouldn't be an issue at all, unless something else has changed.
Besides setting the plugs, we need to know what codes you are throwing.
#9
#11
Damn....you burnt the ground strap off a few of those plugs! They look really rich/black....but if the ground straps are melted off, your egt's are way too hot. Either way....i would avoid running your motor too hard until you figure out what's going on.
Maybe the heat range on those plugs it too hot?
If it was me, I would just run the NGK plugs that the JCW's come with. They are the correct heat range.
Maybe the heat range on those plugs it too hot?
If it was me, I would just run the NGK plugs that the JCW's come with. They are the correct heat range.
Last edited by IQRaceworks; 06-28-2016 at 03:37 PM.
#12
#14
I don't think the gap size has anything to do with the fact that you are melting the ground straps off of the plugs. If you are melting the straps off, you are getting close to melting a piston. The only time I have melted the ground strap off of a plug was when I was running a lot of nitrous on a small block Chevy and the fuel pump crapped out and it went really lean.....but the plugs were bone white because it was so lean, yours are really rich looking. Strange
..
I would send the pics to Jan and see what he thinks.
..
I would send the pics to Jan and see what he thinks.
#16
Perhaps not directly, but combined with the insufficient torque the picture makes perfect sense to me. Insufficient tightening torque is a known cause for melted electrodes (no thermal transfer to head, plug tip overheats). Too wide a gap fouls plug (misfire).
#17
#18
#19
#20
**Also**
Did a little quick research, since NGK's come pre-gapped, the -11's are "technically" the wrong plug, because they do come pre-gapped at .043.
As mentioned earlier, this and a loose plug could absolutely be the problem, esp. if the plugs were changed after the tune or brand new and partially tightened during the tune, something like that wouldn't be that evident during tuning.
(Hmmm, I wonder if the -11 after the plug number means + .011 gap.... No, that would make too much sense)
Did a little quick research, since NGK's come pre-gapped, the -11's are "technically" the wrong plug, because they do come pre-gapped at .043.
As mentioned earlier, this and a loose plug could absolutely be the problem, esp. if the plugs were changed after the tune or brand new and partially tightened during the tune, something like that wouldn't be that evident during tuning.
(Hmmm, I wonder if the -11 after the plug number means + .011 gap.... No, that would make too much sense)
Last edited by BlwnAway; 06-28-2016 at 06:40 PM.
#21
Any indication you were getting fuel/gas blow by past that plug ( besides the obvious ) ? That will cause melting of the strap.
You said all plugs were loose but this is only one showing a high degress of excessive heat. I am wondering if there is a secondary issue, specifically how well the injector for that cylinder is pulsing....
Also, where are you getting your gap info from. .020 is way too tight, and increasing to .044 is done if one has installed a high performance coil pack such as one by MSD.
You said all plugs were loose but this is only one showing a high degress of excessive heat. I am wondering if there is a secondary issue, specifically how well the injector for that cylinder is pulsing....
Also, where are you getting your gap info from. .020 is way too tight, and increasing to .044 is done if one has installed a high performance coil pack such as one by MSD.
#23
You said that you are replacing the plugs every two months.....every time you replace them, do they have the ground straps mental off?
#24
https://www.ngk.com/product.aspx?zpid=9352
BKR6EIX - .031
BKR6EIX-11 - .043
BKR7EIX - .031
BKR7EIX-11 .043
BKR8EIX - .031
BKR9EIX - .031
The 8's & 9's are what I use for my applications.
#25