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Old 04-06-2009, 10:11 AM   #1
TexasRookie69
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those sv carbs

trying to gear up for TWS (Texas World Speedway) next week and when I pulled out the sv it only wants to run on 1 cylinder. This usually happens then it comes online with 2 but not this time. Sat since OHR but this is getting old quick. don't want to take it into Motorcycles Unlimited for another 3 bills so does anyone have any tips or tricks for the mixture challenged? TexasTookie
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Old 04-06-2009, 10:14 AM   #2
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Sounds like you may have some water in your front cylinder. Pull the plug and make sure your not getting any condensation. put it back in and seal if with some silicone.

It happened to mine a couple of years ago.
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Old 04-06-2009, 11:02 AM   #3
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Quote:
Originally Posted by BigComfy View Post
Sounds like you may have some water in your front cylinder. Pull the plug and make sure your not getting any condensation. put it back in and seal if with some silicone.

It happened to mine a couple of years ago.

I've heard of this happening, only after riding in big rains. Not sure condensation would cause it, but you never know.
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Old 04-06-2009, 11:40 AM   #4
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Check the spark plug caps. Then check the E-clips on the slide needles.

If it is not those fixes become more expensive.......
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Old 04-06-2009, 11:45 AM   #5
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It sounds to me like you have dropped a coil. Find out which cylinder is failing and replace that coil. It was probably intermitent in the past because the coil will tend to separate internally when it is cold. Then as the motor runs and heats it up, the connections, reconnect. It is just now beyond that.
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Old 04-06-2009, 11:51 AM   #6
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My SV always ran like after sitting for any length of time. It was recommended to me by Motorcycles Unlimited to put some Sea Foam gas treatment in the tank and run it to see if it helped before bringing it in. I tried it. It worked and I always kept some in the tank after that. No more problems.

I used half a bottle the 1st time and a couple ounces per tank after that.
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Old 04-06-2009, 12:54 PM   #7
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if the bike has been sitting sounds like you need a carb clean to me
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Old 04-06-2009, 01:32 PM   #8
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Carb clean or front plug cap. The front plug caps go bad on the SV's.
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Old 04-06-2009, 07:47 PM   #9
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Quote:
Originally Posted by ROADandTRACK View Post
Carb clean or front plug cap. The front plug caps go bad on the SV's.
All above are chronic issues with the first gen SV.

Fuel only lasts about 2 weeks nowadays, it's important to keep fresh fuel in the tank/ carbs. As mentioned, Seafoam is an excellent product that actually works!

Issues to watch for (as a recap of the above):

Spark plug cap
Old fuel
Dirty jets/ circuits
Bad coil
Loose battery connections

Do the easy stuff first!
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Old 04-07-2009, 10:31 AM   #10
ROADandTRACK
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coils rarely go bad.

If you run some c12 into the carbs b4 storing that works will keep as good as sea foam. Prolly better for a race bike too.
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