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Hmm - question? Random backfiring?!

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Old Jul 3, 2009 | 01:13 PM
  #1  
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Default Hmm - question? Random backfiring?!

Hey guys,

I've got a question. I ride my bike EEEEEVERYDAY to work. And normally it runs pretty good. But yesterday as I started the bike up, it started up kinda weak. I didn't think much of it, I let it warm up for a minute then off I go. As I get on the road, the bike was popping/crackling/farting/backfiring quite a bit. I have my bike tuned to perfection and I have a hard time trying to get it to backfire at all normally. But for some reason, on the ride to work yesterday, it was doing all of the above and quite a bit. That is the 2nd time that it has happened since I've had the bike tuned (8 months ago). The first time was when I went on a toy run I believe it was, and the bike was getting reaaaaally hot since there were hundreds of bikes, so it started to pop/crackle, and then yesterday.

Now my question is... what would cause that? I rode it today and it didn't do any of that. It ran fine. Any suggestions? I just changed spark plugs a couple/few weeks ago as well.

Thanks for the help fella's.
Adrian
 
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Old Jul 3, 2009 | 01:21 PM
  #2  
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Bad gas.
 
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Old Jul 3, 2009 | 01:36 PM
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My bike runs alittle rich at times,raw fuel will make it backfire! it don't happen alot but it does happen.
 
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Old Jul 3, 2009 | 02:02 PM
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Throw any codes?
 
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Old Jul 3, 2009 | 02:17 PM
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Could be bad gas or little bit of water in the gas.
 
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Old Jul 3, 2009 | 02:36 PM
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Was it on acceleration or decel? If it's on decel, check your exhaust flange nuts. I had the same thing on the way home yesterday. It started out just a little and gradually got worse. By time I got home it was horrible. Both nuts on my rear pipe flange were missing. Two new nuts and exhaust seals today and it's running like a champ.
 
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Old Jul 3, 2009 | 02:56 PM
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I'm thinking moisture + pcIII connector.
 
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Old Jul 3, 2009 | 03:31 PM
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The exhaust flange nuts could be the cause, and while you're at it, check all the exhaust system connections and fittings.
 
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Old Jul 3, 2009 | 04:21 PM
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PCIII's Puck up alot ... nature of the beast .. I remove two or three a week, they dont last long .
 
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