• Don't miss out on all the fun! Register on our forums to post and have added features! Membership levels include a FREE membership tier.

Ngk bpr9es plugs failing

K
Jun 30, 2017
89
39
18
Hey has anyone else been having issues with these plugs? I go thru one a ride, the body seems to be seperating on them
 

Reg2view

Well-known member
Lifetime Membership
Feb 1, 2010
2,392
1,600
113
There are many well done counterfeits out there, made in some far off land of killer bats. Seriously, NGK knows there's an issue, and published pic comparisons of genuine vs. repo fakes and how to recognize them a few years ago. At least that's their story. The fakes are likely getting harder to recognize.
 
K
Jun 30, 2017
89
39
18
Weird, i got them from napa so i figured they were genuine, ill have to track that picture down. I have about 4 more to add to this pile sadly3F6D745B-B4AC-4D8C-9C00-041507F596F9.jpeg
 

Mentzel

Well-known member
Lifetime Membership
Oct 10, 2009
359
212
43
The problem is the high oil injection rate. Until Polaris gets the ecu mapping right.. use this work around.

NGK 93427
BPR8ES-6 solid top
NGK TB05EMA Spark Plug Caps
Polaris VES gold oil
 
K
Jun 30, 2017
89
39
18
Injection rate causes the plug to seperate? Seems odd thats all, they dont even foul if i shut it off right when it happens, the electrode can slide freely in the body and it never did it last year at all
 
S
Dec 31, 2018
6
2
3
I've had some failures, similar to the above with the bpr9es. Had an entire 4 pack of bpr9eix have the insulator break away from the metal shell.
Also side note, I've had luck reusing plugs after hitting the tips with some heat from a propane torch and a light wire brushing to loosen the oil/carbon deposits then blowing them out with air. Sadly turned in to part of my post ride check, prepping plugs for the following day
 
K
Jun 30, 2017
89
39
18
I've had some failures, similar to the above with the bpr9es. Had an entire 4 pack of bpr9eix have the insulator break away from the metal shell.
Also side note, I've had luck reusing plugs after hitting the tips with some heat from a propane torch and a light wire brushing to loosen the oil/carbon deposits then blowing them out with air. Sadly turned in to part of my post ride check, prepping plugs for the following day
Ah thats good to know, i change them in pairs and have ran the odd one i know was good but it always fails shortly after. I had one eix fail on me last weekend, im going to try and br9eya and hope for the best haha
 
A
Nov 26, 2007
1,512
810
113
Elko, NV.
Is your octane up to spec or are you trying to run 89 (mild deto) in your 91 min motor, are you turboed. I can't help but wonder since I have been running the NGK BPR9ES since 2004 racking up roughly 37,000 miles and have never had a plug issue of any kind.
 
K
Jun 30, 2017
89
39
18
Stage 2 slp with resistor, non ethanol mode with 91 no ethanol fuel. mainly run around 4000-6000 feet. Honestly i never had an issue last year, my clutching was a little off and overrevved and it would detonate but that happened one time only last year. Put new plugs in last fall and ive had issues ever since, compression is 120 a side. New plug boots and wires. The plug seems to always fail after working the sled hard and then idling for 10 seconds, try and take off and the plug failed( body seperates). Change plug and it runs fine, doesnt seem to matter which cylinder.
 
K
Jun 30, 2017
89
39
18
Is your octane up to spec or are you trying to run 89 (mild deto) in your 91 min motor, are you turboed. I can't help but wonder since I have been running the NGK BPR9ES since 2004 racking up roughly 37,000 miles and have never had a plug issue of any kind.
Cant attach a video but heres some pictures of whats happening
 

Attachments

  • CEE8D98E-C4C0-4A55-BEB2-14D7989B8752.jpeg
    CEE8D98E-C4C0-4A55-BEB2-14D7989B8752.jpeg
    484.3 KB · Views: 56
  • 72C9F95E-A30A-4C0B-8FE4-212422FB89B2.jpeg
    72C9F95E-A30A-4C0B-8FE4-212422FB89B2.jpeg
    439.8 KB · Views: 56
  • 8E5C82C2-0B89-4566-BA40-0F9F851D5B89.jpeg
    8E5C82C2-0B89-4566-BA40-0F9F851D5B89.jpeg
    437.5 KB · Views: 52
  • 586628A3-502E-4CB7-8A00-682651F21179.jpeg
    586628A3-502E-4CB7-8A00-682651F21179.jpeg
    424.3 KB · Views: 54
  • 7391E56C-593F-4DC4-9A2E-9278CD191B8D.jpeg
    7391E56C-593F-4DC4-9A2E-9278CD191B8D.jpeg
    418.2 KB · Views: 57

gtwitch

Well-known member
Lifetime Membership
Jan 24, 2011
394
201
43
Laramie, Wyoming
I am still running on a box of 8 plugs bought 6 or 7 years ago BPR9ES with no problems of this kind ever. Probably getting between 1000 to 2000 miles on plugs and rarely even have to pull plug for any reason. This box of plugs is probably really NGK and not knock offs from BFE.
gtwitch in wyoming
 
Premium Features