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General Category >> Rubber Side Down! >> Backfiring and dying
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Message started by oldskoolsoldier on 06/13/14 at 07:33:09

Title: Backfiring and dying
Post by oldskoolsoldier on 06/13/14 at 07:33:09

So I just bought an 05' S40 about a month ago. It rode fine for the first few weeks, then one day last week it just started to sputter, majorly backfire, and then die and wouldn't restart. I would leave it alone for about 15 mins, then start it up again. It would go about a quarter mile before doing the same thing.
Even though it was half full on gas, I filled it up with gas and that seemed to get me the last few miles home. So I thought the problem was that it was just low on gas. So I started to take it to work the next day, full on gas, and it did the same thing again, it would go about quarter mile, then start sputtering/backfiring and then die.
Any ideas where to start looking for the problem? :-?

Title: Re: Backfiring and dying
Post by Oldfeller on 06/13/14 at 07:37:28

Vac petcock has gone bad, replace it with a Raptor.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1315418285

Title: Re: Backfiring and dying
Post by verslagen1 on 06/13/14 at 07:37:34

have you read this?

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1344399573

or this?

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1366651397

Title: Re: Backfiring and dying
Post by oldskoolsoldier on 06/15/14 at 20:41:54

Thank you! I'll implement both suggestions and let you know how it works.

Title: Re: Backfiring and dying
Post by oldskoolsoldier on 07/16/14 at 17:16:43

So I finally got around to getting a new petcock and when I went to go put it on I noticed something very important... The vacuum hose was not even attached the old petcock! The old clamp was worn out and it had fell off. So I just clamped it back on with a new clamp, and lo and behold, my bike runs fine.
I'm an idiot. :D

I think I'm still going to install the new Petcock, though, because I'm still getting a major backfire when I stop the bike. It's kind of cool, but doesn't seem normal.

Title: Re: Backfiring and dying
Post by BalingWire on 07/16/14 at 18:08:25

I just installed my Raptor petcock today. Get it; its a half hour job. If that vacuum hose gets a bit hard, it will appear to seal, but won't really do the job, and cause you heartache.

The root problem is that the vacuum tube is a Fail-OFF system, and so much can make it fail.

Title: Re: Backfiring and dying
Post by justin_o_guy2 on 07/16/14 at 19:01:46

No,you're not an IDIOT,at least not yet. Wait till you leave the fuel line off the carb and get about a block from home,THEN you can feel like an
EEEDEYUTT.

Title: Re: Backfiring and dying
Post by S-P on 07/16/14 at 20:50:57

7C7F7760787C7C7F607C7F777A7661130 wrote:

I think I'm still going to install the new Petcock, though, because I'm still getting a major backfire when I stop the bike. It's kind of cool, but doesn't seem normal.

Actually that IS normal. Absolutely normal. You can play with the carb and exhaust, jetting etc. and it will STILL backfire. Tune it to RUN, not to STOP. If you don't like the backfire, when you stop, pull the choke out and hit the kill switch. Don't forget to push the choke back in and re-set the kill switch, or you will have a bad experience when you try to start it the next time. Ask me how I know.... ;)

Title: Re: Backfiring and dying
Post by verslagen1 on 07/16/14 at 20:59:37

595A52455D59595A45595A525F5344360 wrote:

I think I'm still going to install the new Petcock, though, because I'm still getting a major backfire when I stop the bike. It's kind of cool, but doesn't seem normal.

Raptorcock won't stop the shutdown backfire.
but you can tone it down to a puff if you richen the idle mixture an 1/8 to a 1/4 turn to the left.

Title: Re: Backfiring and dying
Post by oldskoolsoldier on 07/17/14 at 08:41:15

Hmm, it's still seeming to not be getting proper fuel flow. Still kind of gurgling sometimes, especially on start up and for the first few minutes. I'm definitely going to try installing the Raptor Petcock....

Title: Re: Backfiring and dying
Post by oldskoolsoldier on 09/18/14 at 01:11:10

Okay so NOW I finally got around to installing the new Raptor petcock today and I can already feel it making a world of difference. I don't know what took me so long to do this because it only took about a half hour and my savage now starts and runs amazingly. I would recommend this to anyone who hasn't done it yet. ;D (unless, of course, you bike happens to run great with the factory petcock. No use in fixin' what ain't broke).