Bad gas?
03-22-2008, 05:05 PM
#1
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SuperBike
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Join Date: Mar 2007
Location: Williamsburg, VA
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Bad gas?
So I went on a long ride yesterday, through Uwharrie for anyone familiar with NC. Stopped in some rat hole for gas cause the RLOD was flashing at me. I bought what I assume was 93 and went on my way. About 40 miles later I was slowing down for a stop light and the bike started backfiring like a shotgun. Not like the PAIR pop, I solved that problem a long time ago.
It did it the rest of the way home to varying degrees, always loud as crap though. I didn't have time to screw with it yesterday after I got home. Today, it's doing the same damn thing. The higher I am in the RPM's when I decel the louder and faster it is.
The bike has been running a tad rich. but not horribly. I filled back up with known good gas and some SEAFOAM. Hasn't seemed to solve it yet.
What are the chances that bad or old gas from that crappy station might have caused this? What else should I be looking at? I have changed absolutely nothing recently to have caused this.
It did it the rest of the way home to varying degrees, always loud as crap though. I didn't have time to screw with it yesterday after I got home. Today, it's doing the same damn thing. The higher I am in the RPM's when I decel the louder and faster it is.
The bike has been running a tad rich. but not horribly. I filled back up with known good gas and some SEAFOAM. Hasn't seemed to solve it yet.
What are the chances that bad or old gas from that crappy station might have caused this? What else should I be looking at? I have changed absolutely nothing recently to have caused this.
03-22-2008, 05:20 PM
#2
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Superstock
Join Date: Jul 2007
Location: Alameda, CA
Posts: 395
What is that?
And I know Uwharrie, used to take my Jeep in there sometimes. And I remember getting bad gas from a station near the park as well a few years ago.
I dont know what couldve caused it but i have had that issue before and only thing i can suggest is some higher octane (the booster stuff just not a full bottle) or maybe a carb cleaner and run it almost completley out of gas before you fill up again
And I know Uwharrie, used to take my Jeep in there sometimes. And I remember getting bad gas from a station near the park as well a few years ago.
I dont know what couldve caused it but i have had that issue before and only thing i can suggest is some higher octane (the booster stuff just not a full bottle) or maybe a carb cleaner and run it almost completley out of gas before you fill up again
03-23-2008, 01:29 PM
#3
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MotoGP
Join Date: Sep 2006
Location: Austin, Tx
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Sounds like bad gas to me, too, drew! Nobody buys premium in the outback or the ghetto so stay with 89 octane. Stay with known gas and SeaFoam - if it didn't die completely it will probably work its way through.
03-23-2008, 03:31 PM
#4
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SuperBike
Join Date: Jan 2007
Posts: 2,116
If it is in fact bad gas rather than a leak at an exhaust manifold copper
O-ring, I would drain the tank and ump it in your cage when its more the
5/8th full. Then fill up the VTR with gas from a brand name station and run Sea Foam or a licensed ChevronTecron concentrate.
BTW, 87 octane is fine if you are not running higher compression pistons or its avery hot day under high loads. 87 octane is what the VTR is rated for and go actually get better combustion and cleaner running than ethyl.
O-ring, I would drain the tank and ump it in your cage when its more the
5/8th full. Then fill up the VTR with gas from a brand name station and run Sea Foam or a licensed ChevronTecron concentrate.
BTW, 87 octane is fine if you are not running higher compression pistons or its avery hot day under high loads. 87 octane is what the VTR is rated for and go actually get better combustion and cleaner running than ethyl.
03-23-2008, 03:44 PM
#5
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SuperBike
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03-23-2008, 05:02 PM
#6
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03-23-2008, 05:29 PM
#7
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SuperSport
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Location: Fredericksburg, VA
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Took the Mx'er out yesterday with 5 friends...all on 4 strokes, 4 out of 6 bikes were popping pretty bad during decel cause we hadn't ridden in a while and had some stale gas in one of the cans. It was kinda funny listening to everyone "pop" around the track. Once our tanks were almost empty we filled up with some fresh stuff and the bikes eventually straightened out. Good luck!
03-23-2008, 05:56 PM
#9
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SuperBike
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Checked for leaks...none. So I'm still on bad gas. Two tanks later and it's still doing it, just not as much. Pulled the plugs, they were good.
Riding with the choke pulled out seemed to make it go away, but that confuses me. That would tell me I'm way lean, how does a bike go from kind of rich to way lean in the middle of a long ride.
Riding with the choke pulled out seemed to make it go away, but that confuses me. That would tell me I'm way lean, how does a bike go from kind of rich to way lean in the middle of a long ride.
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