high gas smell from exaust - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 5 Old 09-22-2004, 10:10 PM
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high gas smell from exaust

Im getting a stinky gas smell from my DL1000 K2.
I changed the filter and sparkplugs, but that didnt make a difference.
Im running with 87 octane.
Tried 92, but was getting some stalling and some backfiring.
Im not dreaming, because Im up to three different bike drivers that
cant follow me because of the stink...
Any input appreciated. :?
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post #2 of 5 Old 09-22-2004, 11:04 PM
Join Date: Jul 2004
Location: Saskatoon, Canada
Posts: 192
I can't see how changing the air filter or spark plugs would make any difference in this. If the engine was flooding or running very rich, your old spark plugs would have a black sooty look to them on the insulators rather than the ideal light brown you want to see. Even then you shouldn't be able to smell the fuel from too rich a mixture. I'd follow your fuel lines checking carefully for any sign of a fuel leak, especially at any connections. You shouldn't be able to smell gas unless it is actually leaking out somewhere. Do this after a short, slowish ride, because if you are riding too fast the wind might dry out the fuel fairly quickly. Are you sure you have attached the fuel line correctly again under the tank after you had the tank off to replace the air filter. Check that carefully by making sure the clip pushed in solidly all the way home and that there's no sign of fuel leaking in that area under the tank. I suppose another possibility is that your gas cap isn't closing properly, but that would be pretty obvious, and you probably wouldn't be able to get the key out of the cap either. I would definitely suspect something in the fuel line. It's possible, but highly unlikely that you've developed a crack or small hole in the fuel tank itself. On such a new bike, that would probably only happen if there was a defect in the original welds done at the factory.

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post #3 of 5 Old 09-08-2007, 11:51 AM
Junior Trooper
Join Date: Jul 2007
Location: Duluth, MN
Posts: 7
Same exact problem

Hey guys,
I have the same bike and an awful smell. I dont really notice it myself, but other riders comment on it. I am curious about that fuel line....I'll check today as I've had it off many times. I drilled holes in my exhaust pipes and wondered if that was it. I get the annoyingly terrible stumbling at 4000 and lower too, but I just ignore it. I tried a TBS and I feel I did it right but that didnt do much. I am starting to smell it on my jacket too, especially when you come to a stop on a windless day, and the air behind you slowly wafts forward, then I can really smell it.
I was first reported to me when I blew by someone WOT at around 80 MPH, but I notice it at all speeds.

That doesnt help but I wanted to get one more report out there about it.
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post #4 of 5 Old 08-21-2008, 08:01 PM
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Join Date: Oct 2007
Location: philadelphia, pa
Posts: 14
I have an 07 1000 with 5500 miles with the same problem, likely started around 4500 miles. My riding buds behind me noticed, I don't smell it. I also have an idle problem, it tends to hang at 2500 rpm. You guys think there is any coincidence?
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post #5 of 5 Old 08-22-2008, 03:09 PM
Join Date: Aug 2007
Location: Omaha, NE
Posts: 7,350

If you can have someone with an exhaust gas analyzer check the bike, you should be able to tell in short order whether that's the source of the gas smell. It is not impossible that you are getting misfires at speed, which would send raw gas out the exhaust which may not be reflected in spark plug color. Ironically, this is often caused by a too-lean mixture. So I'd check all vacuum lines and intake boots to make sure there's no air leakage into the intake.
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