Hi Everyone,
My dad recently put a Vito's 240 kit in my bike. It included the Head, Cylinder, Piston and Rings. LR Racing did a mild Trail Port or Blueprint on the Cylinder. The 340 main jet, and the included pin are in the carb as recommended by both Vitos and LR Racing.
We went through an entire tank of gas heat syncing the bike. Filled her up and went out again, I went up a moderate hill (anyone from Oregon...I was at South Jetty and went up the far left end of the hill at the main parking lot). Bike went up nicely a few times, got on the pipe as expected...good power. (Actually, I was impressed...it was fast!)
Stoped and chatted about it for a few minutes, then went up again and that's when the problems started... Throttle lags and has a terrible time getting on the pipe...(if I wiggle the throttle enough in gravel it will get past it and goes.)
We replaced the spark plug --> it was very rich. Bike still did the same thing... Dropped down a jet, too lean...and same problem.
We currently have the 340 jet and supplied pin in the bike. We took the carborator out of a known working bike and swapped the jets... better but the throttle lags abou 1-2 seconds behind and actually got on the pipe better but I was on pavement. We have cleaned the stock carb in Yamaha Carb Cleaner twice and had the coil checked by the local yamaha shop... I have an aftermarket pipe & silencer that came on the bike...unknown brand. The bike is a 1991...we have annother 1991 blaster that we can swap parts with to troubleshoot and a 2002 blaster.
We are getting very frustrated, and my dad is really upset as this was a birthday present...that's not working...
Any help would be greatly appreciated.
Thank You,
Kristin
My dad recently put a Vito's 240 kit in my bike. It included the Head, Cylinder, Piston and Rings. LR Racing did a mild Trail Port or Blueprint on the Cylinder. The 340 main jet, and the included pin are in the carb as recommended by both Vitos and LR Racing.
We went through an entire tank of gas heat syncing the bike. Filled her up and went out again, I went up a moderate hill (anyone from Oregon...I was at South Jetty and went up the far left end of the hill at the main parking lot). Bike went up nicely a few times, got on the pipe as expected...good power. (Actually, I was impressed...it was fast!)
Stoped and chatted about it for a few minutes, then went up again and that's when the problems started... Throttle lags and has a terrible time getting on the pipe...(if I wiggle the throttle enough in gravel it will get past it and goes.)
We replaced the spark plug --> it was very rich. Bike still did the same thing... Dropped down a jet, too lean...and same problem.
We currently have the 340 jet and supplied pin in the bike. We took the carborator out of a known working bike and swapped the jets... better but the throttle lags abou 1-2 seconds behind and actually got on the pipe better but I was on pavement. We have cleaned the stock carb in Yamaha Carb Cleaner twice and had the coil checked by the local yamaha shop... I have an aftermarket pipe & silencer that came on the bike...unknown brand. The bike is a 1991...we have annother 1991 blaster that we can swap parts with to troubleshoot and a 2002 blaster.
We are getting very frustrated, and my dad is really upset as this was a birthday present...that's not working...
Any help would be greatly appreciated.
Thank You,
Kristin
We have a K & N with no box, and an outer wear. And we did put the blue needle in...should we change it back to the red one and buy a larger jet? the 340 is the largest one we have...what size do you recommend? Thanks!
