BPR9ES failing?
- Thread starter MKULTRA
- Start date
One of the stock plugs on my 2016 AXYS did the same thing. Haven't seen\heard another like it until now.
Happened to me yesterday. The ceramic part of the plug spins freely too.
Same thing for me. Like said before a few more on FB. All of the porcelain broke free. No check engine, no codes. Dealer replaced spark plugs. Polaris swears they have never heard of any other issues.
we use the exact same plug number and heat range in a lot of our race motors, thats really strange for sure, first glance i'd say detonation, however with multible plugs doing it, ummmm. We have used 1000's of NGK's over the years with nothing like this...may have to switch to autolight race plug if it continues 
AR3933's
AR3933's
Replaced two in the passed week.Geez..
I've had 3 champion plugs fail on me. The electrode comes loose and falls down inside the porcelain. If you hold the plug with electrode down and tap the plug it slides back down and looks normal. This has happened on a couple different sleds.
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3 different buddies in the last year have had 2-6 BPR9ES failures each exactly like described. I'd said you are most definitely not the only one having those issues.
I've only run NGKs in my sled, except it may have had Champion plugs in it when I got it. Same with the old Indys I've tinkered on. Never seen one come apart like this, but I haven't bought a new set for a while, so maybe it's a recent run that's bad. I've run NGK plugs in a couple cars without issue too (although they don't seem to last as long as some). Hard to tell from reading through the posts here, but seems like this is happening mostly with plugs that have been sourced recently; seems at least two cases were OE plugs, can anyone confirm they've had plugs they bought fail? If so, when purchased?
Anyway, like 2XM3, I use and so far love the BPR9EIX. I've had issues starting my sled after rolling over in the past, but had to roll it over a couple times this season and it always fires back up after a handful of pulls. I wouldn't say NGK are the greatest, but they're pretty good. Autolite used to be the go-to for old V-8s and such, I think a lot of the stuff they make is pretty low-grade anymore. Haven't run Champion too much, sounds like they're also a one-time standard that's gone over the hill. Unless this is just the tip of the iceberg, I'd still say NGK is the best bet, but I'd like to know what's going on here.
Anyway, like 2XM3, I use and so far love the BPR9EIX. I've had issues starting my sled after rolling over in the past, but had to roll it over a couple times this season and it always fires back up after a handful of pulls. I wouldn't say NGK are the greatest, but they're pretty good. Autolite used to be the go-to for old V-8s and such, I think a lot of the stuff they make is pretty low-grade anymore. Haven't run Champion too much, sounds like they're also a one-time standard that's gone over the hill. Unless this is just the tip of the iceberg, I'd still say NGK is the best bet, but I'd like to know what's going on here.
