Do any of you lot out there find your bikes backfiring through the carbs?
My bike is a 03 with 2000km's on it so it may still be setteling in. The backfire (in the carb) happens at low revs hard enough to nock the tank into my nees.
Could this be because I'm using 91 octain fuel, or perhaps it's running a bit lean eather way it can't be good for it. Thanks for the help
03 carb backfiring
03 carb backfiring
cheers Darryl
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thehazmatguy
- Posts: 74
- Joined: Thu May 08, 2003 5:58 am
- Location: Phoenix, Arizona, USA
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I bought my VTR with 4,500 miles on it, and I have over 40,000 now. It has occasionaly backfired through the carbs ever since I got it. It doesn't seem to hurt anything, and I have heard of other VTR's doing the same. The only problem it causes me (I think) is that it knocks my the "little rubber things" from my K&N filter to fall into the carb openings.
You know the Austin Powers movies? I have always wanted to date someone like Allota Fagina... but I always seem to date her sister Sandy.
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Mine does this only very occasionally. Here in NZ, the fuels available are 91, 95 and 98. The 95 is crap, as it has the octane rating artificially boosted by adding more toluene and xylene (basically paintbrush cleaner!)to the brew, which soots up the plugs. So, I have a choice of 91 (which also has crap in it, but not as much) or imported 98, which is expensive but cleaner. So I alternate between the two, so I end up with mixed tankfuls. Dunno if it helps, but I'm using it as I think it 'pinks' a bit on the 91.
I've found that the bike only backfires if I blip the throttle a small amount (like for downchanges). If I give it a big blip (to change into first, for example), it's fine. I suspect part of it with my 'Storm is that it's running a wee bit lean at lower revs because I've fitted a Unifilter and haven't yet adjusted the carbs, and also haven't yet checked the Throttle Position Sensor (see postings in Workshop).
I've found that the bike only backfires if I blip the throttle a small amount (like for downchanges). If I give it a big blip (to change into first, for example), it's fine. I suspect part of it with my 'Storm is that it's running a wee bit lean at lower revs because I've fitted a Unifilter and haven't yet adjusted the carbs, and also haven't yet checked the Throttle Position Sensor (see postings in Workshop).
- Ian in EnZed
(Red 97 FireStorm with Dynojet kit, APE camchain tensioners, bafflectomy+ploogs, UniFilter, GenMar risers, Avon Azaros, 90/130W headlight, digital clock/voltmeter), Braided s/steel lines.
(Red 97 FireStorm with Dynojet kit, APE camchain tensioners, bafflectomy+ploogs, UniFilter, GenMar risers, Avon Azaros, 90/130W headlight, digital clock/voltmeter), Braided s/steel lines.