Triumphrat

joeknows

Before my question, let me put a disclaimer in. Most of the bikes I've had in the past had fuel injection and shaft drive. Ok. That said, my '06 Speedmaster has what I can only describe as a lag and a surge. It's had this from day one. I notice this mostly in the lower gears. It's quite annoying. I recently changed my pipes an re-jetted the carbs, but no change. I adjusted the chain - still no change. Is this a normal by-product of carburation versus fuel injection or is something else going on? This happens when I roll off the throttle and roll it back on. Any suggestions?

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"NOBODY GETS OUT OF LIFE ALIVE"

alfacliff

that response problem dosnt happen to my 2006 bonnie, or my 80 xs650. both have carbs.
cliff

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2006 Bonnie Black
1980 Yamaha xs650

joeknows

I now think it may be drive train play. Maybe I am just not used to the chain and the trans?? Either way I don't like it

[ This message was edited by: joeknows on 2007-03-14 16:02 ]

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"NOBODY GETS OUT OF LIFE ALIVE"

dazco

Thats the exact symptom i had when running lean. Is your bike a Ca model by chance?

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2005 Speedmaster, Neon Blue, Thunderbike pipes, snorkel removed, UNI filter, drilled airbox, 130 mains, TBS needles.(2 shims) And speaking of Speedmasters, HERE'S MINE

joeknows

No. It's not. I don't think it's running lean but better be safe than sorry. I will have to pull a plug and see.

JOE

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"NOBODY GETS OUT OF LIFE ALIVE"

ErwinM

Dosent hurt to check carb balance. mine were out. Balanced them and it fixed it up.

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Erwin

mag10

open up the vacuum ports in the slides to 3mm, that will change your throttle response. You might also try a different needle or try shimming your needles.

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see my wicked black speedmaster

joeknows

Thanks Guys

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"NOBODY GETS OUT OF LIFE ALIVE"

dazco

Also you may wanna check your airbox drain tubes. One backfire and the caps can pop off. I found both mine gone a while back. That can cause more intake not to mention unfiltered. Not sure if it could cause enough extra airflow to cause a lean condition, unless maybe it was on the edge already.

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2005 Speedmaster, Neon Blue, Thunderbike pipes, snorkel removed, UNI filter, drilled airbox, 130 mains, TBS needles.(2 shims) And speaking of Speedmasters, HERE'S MINE

ErwinM

I think his year bike is already at 3mm.................

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Erwin