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Carbs and Fuel System
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  Topic Review (Newest First)
04-25-2018 08:27 AM
michiganteddybear agree with Spockster. if your an infrequent rider, some seafoam or other fuel stabilizer (for gas with ethanol) will go a long way to keep the carbs in good shape.

when I owned mine, as a daily rider, I didnt need to use seafoam hardly at all, maybe once a year. keep the fuel flowing thru the system (even if it has ethanol) and everything is ok
04-24-2018 08:11 PM
Spockster
Quote:
Originally Posted by Vulcanlover View Post
Wow, I did not know that Spockster, thanks for the info. Only prob is the only non ethanol I can get where I live is 92 Octane. So would you use that or low octane ethanol blend ?
Personally, I'd go with the ethanol and lower octane. Only time I have trouble is with weeks of storage, I just run a tank with seafoam twice per season.

One year, I used non-ethanol for winter storage, and had no problems. I'm just not a fan of storing the carbs dry.
04-24-2018 07:09 PM
Vulcanlover
wow

Wow, I did not know that Spockster, thanks for the info. Only prob is the only non ethanol I can get where I live is 92 Octane. So would you use that or low octane ethanol blend ?
04-24-2018 06:25 PM
Spockster Hey you're welcome.

Non-ethanol is best, but high octane is no help and actually can make things worse.

Poor starts, reduced performance/mpg, and increased carbon build-up can be expected with higher octane use, it burns cooler and slower than 87 octane.
04-24-2018 06:06 PM
Vulcanlover
Thanks

Thanks again for the help everyone and thanks for the pics Spockster ! And I did store it on the centerstand this winter. I used a whole can of seafoam on it last fall right before storage, and it might of knocked off some crud that dried out over the winter then sucked up and plugged the pilot jet, just guessing. And as far as gas, I always use non-ethanol high octane in her. Going to take the bike to a local shop, he said he would remove the carbs, clean them, and reinstall and sync for $100 which I thought was a great deal. He said he would also diagnose my charging problem while he had the bike. I told him about the two wire mod I did and he said he knew of it and approved of it If I could get my bike charging it would make my whole summer.
04-23-2018 09:19 PM
OleDirtyDoc Could also have a sticky or dirty float needle and is flooding at low rpms

Sent from my Z899VL using Tapatalk
04-23-2018 11:49 AM
Spockster
Quote:
Originally Posted by WilliamTech3 View Post
Spockster, would centerstand storage results be a better option... ?

WilliamTech3
I think it does help, when the bike is laid over, the jets probably get uncovered sooner.

I'm usually too pooped after a ride to do the centerstand, but the first startup after winter, the rear cylinder fired up a minute after the front.
04-23-2018 10:07 AM
WilliamTech3
Quote:
Originally Posted by Spockster View Post
Seems like it's always the rear carb that dries out in storage a few days, maybe because the direction it tilts, not sure.

So you evaporate the gas, and the residue that's left gets into the jets on the next ride.

Got to get the seafoam in there before a jet becomes clogged.

Don't believe we would have so much trouble if we had real gasoline.

Edit: The tip of the jets do sit in fuel, when the chamber is full. It just won't get pushed up through the jet by the weight of the fuel. The fuel gets drawn up by engine vacuum.
Spockster, would centerstand storage results be a better option... ?

WilliamTech3
04-23-2018 09:39 AM
Spockster Seems like it's always the rear carb that dries out in storage a few days, maybe because the direction it tilts, not sure.

So you evaporate the gas, and the residue that's left gets into the jets on the next ride.

Got to get the seafoam in there before a jet becomes clogged.

Don't believe we would have so much trouble if we had real gasoline.

Edit: The tip of the jets do sit in fuel, when the chamber is full. It just won't get pushed up through the jet by the weight of the fuel. The fuel gets drawn up by engine vacuum.
04-23-2018 09:18 AM
Knifemaker Well if the jets do not sit in fuel when the bike is off, that likely explains the multitude of carb problems we've seen over the years.
Just about every motorcycle I've owned that was not fuel injected, never had any carb or fueling problems .....except for the Vulcan 750.
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