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View Full Version : Flames at 4.5-4k rpm

bs8c
04-09-15, 07:53 AM
I recently did the tps and the stvs but i keep getting flames whenever i decelerate..and only at 3.5-4k rpm. Sometimes all it needs is to rev up to 4k or 4.5k and let the throttle off, and it throws flames... I relay want to fix this cuz i tend to cruise trough town ad 4k rpm. Any thought`s what can be causing this? It`s a 04 sv650, removed tre, and alternative to the sv1000 snorkel. Can`t think of any other mods that would affect this.
Luckypants
04-09-15, 08:11 AM
i keep getting flames whenever i decelerate..and only at 3.5-4k rpm. Sometimes all it needs is to rev up to 4k or 4.5k and let the throttle off, and it throws flames... COOL!! :cool: :D

I'm not helping, am I?
bs8c
04-09-15, 08:30 AM
Not realy, but i understand...flames are cool xD only when i know why they're apearing...in my case...not so cool xD
ophic
04-09-15, 11:27 AM
Mine had a huge backfire around this rev point on overrun. Found it to be that the garage had left a PAIR tube unattached. I was normally on the bike so couldn't tell if it was chucking flames but it sounded like a shotgun going off and generally made me jump out of my seat.

So... check PAIR tubes.

After that, I'd say check spark plugs. If unburnt fuel is getting to the exhaust, it means it's not being burnt in the cylinder so could be a weak spark or dirty plug.
bs8c
04-09-15, 01:56 PM
Pair are connected. I checked the valve clearance some tie ago and i'm 100% sure i plugged them right.
Oh and i also run Sebring Twister slip on(shorty)
Toooldtodie
04-09-15, 05:14 PM
I feel your pain...

... but I'm with Luckypants (sic) on this one, COOL!

I have a mental age of 7 and three-quarters when it comes to exhausts!!
Kenzie
04-09-15, 07:26 PM
Vid?
bs8c
04-09-15, 07:29 PM
Tommorow. I'm at work now...till 2am.
Kenzie
04-09-15, 07:43 PM
All the better to see the flames
nutzboutbikes
04-09-15, 07:54 PM
I agree we need a video of these said flames!
bs8c
05-09-15, 12:06 AM
Heheh 2am right now, and i sorta don`t feel like waking up my baby just to make a video of the flames.. xD you`ll have to wait till tommorow :P
bs8c
14-09-15, 07:30 PM
Sorry to disapoint you. I removed the PAIR system and the backfire is gone now. :)
nutzboutbikes
15-09-15, 09:38 AM
:smt015
ophic
15-09-15, 09:50 AM
Sorry to disapoint you. I removed the PAIR system and the backfire is gone now. :)
Yay what do i win? :smt033
bs8c
15-09-15, 01:18 PM
https://youtu.be/xR9ixrHHkYE an older video :)
bs8c
15-09-15, 01:19 PM
https://youtu.be/zARxduK-FF4 and another one. I wouldn't want to leeave you without flames ;)
shiftin_gear98
15-09-15, 03:06 PM
I agree, that is cool, put the pair system back on!!
bs8c
15-09-15, 03:20 PM
Those are older videos. The last time the flames there were a bit less flames tho :P
bs8c
15-09-15, 03:22 PM
I'll try to tune the bike for it's richer condition. And after that i might put the pair back...i wouldn't want to ruin the environment xD
TheRamJam
18-09-15, 11:11 AM
Keep the flames, will help warm up yer hands in winter ;-)

If you have an aftermarket exhaust then dump the PAIR system and get it mapped. Should sort out any issues you're having!