Clinician
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Post by station180 on May 9, 2015 20:50:16 GMT -6
no i havent measured the carb. What size jets should it have with the big bore kit. I will try to get some from the guy I know or maybe another carb to try.
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Clinician
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Post by station180 on May 9, 2015 20:24:47 GMT -6
Looked at that last time I had the carb apart there were no numbers on either the pilot or the main jet
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Clinician
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Post by station180 on May 9, 2015 20:15:23 GMT -6
I bought this scooter about 3wks ago with this problem thinking it was just a valve adjustment issue. All the mods had already been done. I dont know about the carb but I know they upgraded it. it is a keihin. When adjusting the mixture screw I get the fastest idle at about 3/4 to 1 turn out which leads me to believe the jets might not be quite right but that wouldnt explain how it started as soon as you hit the button for 4 days?  |
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Clinician
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Post by station180 on May 9, 2015 19:52:47 GMT -6
Also the guy i know that works on scooters has some cdi boxes tried an orange one wouldnt start at all. A red one still hard to start and sputter and skips at about half throttle. original hard to start runs goo after starting. The air filter is one of those high performance cone looking ones. Have tried the idle mixture from ! to 3 turns in 1/4 turn incriments
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Clinician
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Post by station180 on May 9, 2015 19:47:49 GMT -6
yes I have cleaned the carb several times adjusted the valves to 3 and 4 back to 5. I am a small engine mechanic by trade but have never worked on scooters just mowers trimmers chainsaws ect. Never seen anything like this! It seems like a spark issue but when i ground the plug its getting fire. whats really confusing is if you get it started it idles smooth the power is good top end is about 45 to 50 its ujust that it might take you 20 minutes to get it started! It magically healed its self lat week for 4 days and started as soon as you hit the button but then went back to the same old thing. a guy i kno thinks its the stator going bad but would it run good after its started if it was the stator?
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Clinician
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Post by station180 on May 9, 2015 19:00:41 GMT -6
I have a 2013 peace sports scooter that is driving me crazy. It has been upgraded to the 100cc big bore kit. It runs great when it starts but it turn and turns forever until it does. I have had the engine apart and checked the rings and cylinder they are good look like new.Compression is also good. Replaced the coil and plug Cleaned the carb. Changed the auto enricher. Played with the valve gap currently at .005 Checked all the grounds.For some mysterious reason the scooter started great for 4 days last week then it started sputtering when you give it throttle put in another cdi and its back to running great if you can get it started. its just as hard to start using starting fluid. So i know its getting fuel and spark i cant figure out how it can run so good and yet be so hard to start. i appreciate any advice
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