Bad gas after 3 months?
#41
Interesting. My F2 also was a track bike, not sure how long though. Probably between 8 and 10,000 miles. It too sat for several years until the guy I bought it from acquired it. Good thing is that, mechanically it's been well maintained since the original owner took care of it while racing, then the guy I got it from was a responsible, adult in his 40's. He basically took care of the bike like he would his car. It's nice getting a bike that has a known solid history, but sometimes difficult. Interesting you say your bike doesn't run well on anything below 93 octane. Some people are firm in the belief that regular gas is THE best for the older bikes and there's little difference in performance OR the bike will run better on regular. I'm curious why your bike doesn't like regular octane. Maybe extensive mods or fancy kits affect how a bike responds to octanes different than what it was designed for? I've ran regular and high octane, but I don't think i've ridden the bike enough to notice the subtle differences.
As far as the gas it has to do with detonation point do to compression. I know it has an aftermarket cam in it. It may have the timing advanced, I've never checked but this is my guess. The head may have been decked. It doesn't really look like it but then I've never side by side compared it next to another one. I've actually tried a few times to run 87 through it and it pings a bit and generally runs like crap. I actually dumped some of that crappy octane boost stuff in last time to try and help it out.
I can tell you I'm an auto tech by trade although I work in the medical industry now and I know all about grades of gas. I'd never waste my money on premium if it wasn't actually the only gas my bike likes.
#42
That is pretty neat actually. Are all your nuts and bolts still wired down? Anything I haven't taken off is. I figure what the heck might as well leave it. Won't ever have to worry about it falling off lol.
As far as the gas it has to do with detonation point do to compression. I know it has an aftermarket cam in it. It may have the timing advanced, I've never checked but this is my guess. The head may have been decked. It doesn't really look like it but then I've never side by side compared it next to another one. I've actually tried a few times to run 87 through it and it pings a bit and generally runs like crap. I actually dumped some of that crappy octane boost stuff in last time to try and help it out.
I can tell you I'm an auto tech by trade although I work in the medical industry now and I know all about grades of gas. I'd never waste my money on premium if it wasn't actually the only gas my bike likes.
As far as the gas it has to do with detonation point do to compression. I know it has an aftermarket cam in it. It may have the timing advanced, I've never checked but this is my guess. The head may have been decked. It doesn't really look like it but then I've never side by side compared it next to another one. I've actually tried a few times to run 87 through it and it pings a bit and generally runs like crap. I actually dumped some of that crappy octane boost stuff in last time to try and help it out.
I can tell you I'm an auto tech by trade although I work in the medical industry now and I know all about grades of gas. I'd never waste my money on premium if it wasn't actually the only gas my bike likes.
#43
I couldn't read the entire thread, but I had a similar problem with my Magna. A cheap plug wire by the previous owner was actually shorting through the wire into the head. It caused an intermittent sputter and sometimes hard starts. (I fixed it with electrical tape....lol)
If a bike just suddenly has a problem, I never suspect bad gas, though. (and the F2 is fine with 87, btw).
Hell, I had a civic sitting for 5yrs with the same gas in it and it fired right up. I also had a jeep that sat for 6 months twice with no issues.
I've actually never had "bad" gas in any cars or bikes (except for on a trip once and it was obvious). Maybe I'm just lucky?
I do usually use seafoam as a stabilizer, though, fwiw. Just a couple ounces.
If a bike just suddenly has a problem, I never suspect bad gas, though. (and the F2 is fine with 87, btw).
Hell, I had a civic sitting for 5yrs with the same gas in it and it fired right up. I also had a jeep that sat for 6 months twice with no issues.
I've actually never had "bad" gas in any cars or bikes (except for on a trip once and it was obvious). Maybe I'm just lucky?
I do usually use seafoam as a stabilizer, though, fwiw. Just a couple ounces.
#44
I couldn't read the entire thread, but I had a similar problem with my Magna. A cheap plug wire by the previous owner was actually shorting through the wire into the head. It caused an intermittent sputter and sometimes hard starts. (I fixed it with electrical tape....lol)
If a bike just suddenly has a problem, I never suspect bad gas, though. (and the F2 is fine with 87, btw).
Hell, I had a civic sitting for 5yrs with the same gas in it and it fired right up. I also had a jeep that sat for 6 months twice with no issues.
I've actually never had "bad" gas in any cars or bikes (except for on a trip once and it was obvious). Maybe I'm just lucky?
I do usually use seafoam as a stabilizer, though, fwiw. Just a couple ounces.
If a bike just suddenly has a problem, I never suspect bad gas, though. (and the F2 is fine with 87, btw).
Hell, I had a civic sitting for 5yrs with the same gas in it and it fired right up. I also had a jeep that sat for 6 months twice with no issues.
I've actually never had "bad" gas in any cars or bikes (except for on a trip once and it was obvious). Maybe I'm just lucky?
I do usually use seafoam as a stabilizer, though, fwiw. Just a couple ounces.
Last edited by outsider; 04-03-2013 at 12:37 PM.
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