Road Star Forum	ForumThreaded ViewRules

Welcome, Guest Please Login or Register.    Lost Password?

Favoured: 0

Page: << Start < Prev 1 2 Next > End >>

TOPIC: Re:Throttle being touchy .... Forum Tools Post New Topic Show latest posts Rules

#993484 Lrdstar (User) Senior Boarder Posts: 319 Throttle being touchy .... 1 Year, 3 Months ago   Recently my throttle does not feather well going from off to lightly on at cruise speed. It's kind of abrupt when it does take hold, but not a clunk etc as in a pulley clunk. Anybody experience this? My first thought was to check the throttle linkage and butterfly, which I did and they are fine & move freely. The manifold does have some decent size rubbercracks but so far the idle is normal and hasn't changed, so I think the cracks are not all the way thru yet. Should I be thinking about a carb rebuild and fix those cracks while I'm in there, or is there something else I should be considering that I'm not.. that could cause the abrupt response.   Logged     Last Edit: 2016/11/18 23:40 By Lrdstar.   The administrator has disabled public write access. #993489 Aussie John (User) Platinum Boarder Posts: 1937 Re:Throttle being touchy .... 1 Year, 3 Months ago   Just an idea, maybe the carbie pump is not squirting fuel as it should, you can check this by removing the air cleaner and twisting the throttle and see if it pumps, it only needs to pump for the first 1/4" of throttle movement, any more than this is just waste of fuel, the other might be the primary jet could be partly blocked and cant deliver enough fuel when the throttle is opened, I covered my manifold in silastic sealer   Logged     The administrator has disabled public write access. #993495 Shores (User) Go getchur scooter! Platinum Boarder Posts: 6961 Re:Throttle being touchy .... 1 Year, 3 Months ago   Kink in the cable or sticky/dry cable?   Logged     Last Edit: 2016/11/19 04:53 By Shores.   The west is the best - Jim Morrison Photo by GreenMachine   The administrator has disabled public write access. #993496 Jclevesque (User) Platinum Boarder Posts: 1461 Re:Throttle being touchy .... 1 Year, 3 Months ago   Shores wrote: Kink in the cable or sticky/dry cable? +1 make sure they are lubed properly and free from anything else around them then go from there. It may be something real simple.   Logged     Last Edit: 2016/11/19 07:48 By Jclevesque.     The administrator has disabled public write access. #993508 BikerRon (User) Sour Kraut Platinum Boarder Posts: 4189 Re:Throttle being touchy .... 1 Year, 3 Months ago   Sounds like a lean condition to me.   Logged     ' width='450' border='0' style='max-width:450px; ' />   The administrator has disabled public write access. #993513 Lrdstar (User) Senior Boarder Posts: 319 Re:Throttle being touchy .... 1 Year, 3 Months ago   I'm leaning toward the lean condition or primary jet. thanks guys   Logged     The administrator has disabled public write access. #993548 SKWEARpeg (User) Platinum Boarder Posts: 12885 Re:Throttle being touchy .... 1 Year, 3 Months ago   If its still the stock jetting, and a 1700, you can easily go to a 40 Mikuni Pilot. The stock 35's, are a bit anemic even in the 1600's, when opening the intake and exhaust.   Logged       The administrator has disabled public write access. #993560 Lrdstar (User) Senior Boarder Posts: 319 Re:Throttle being touchy .... 1 Year, 3 Months ago   Aussie John wrote: Just an idea, maybe the carbie pump is not squirting fuel as it should, you can check this by removing the air cleaner and twisting the throttle and see if it pumps, it only needs to pump for the first 1/4" of throttle movement, any more than this is just waste of fuel, the other might be the primary jet could be partly blocked and cant deliver enough fuel when the throttle is opened, I covered my manifold in silastic sealer Thanks for the info about using silastic sealer Aussie. Yeah the squirrty pump is shooting out just fine. It's a 1600.. with a stock Mikuni. Don't know what jetting it has tho because I purchased the bike from a relative of the deceased owner, with no info. I've had to discover things as I go. Think I will just ride it like it is for now eventually pull the carb and go thru it for jetting etc, and when I do upgrade to an aluminum ported manifold.   Logged     The administrator has disabled public write access. #993593 Spydr (User) Let's Ride ! Platinum Boarder Posts: 2252 Re:Throttle being touchy .... 1 Year, 3 Months ago   Lrdstar wrote: and when I do upgrade to an aluminum ported manifold. Good luck finding one of those. And if you do... even better luck getting it to seal properly.   Logged     Welcome to my NightMare   The administrator has disabled public write access. #993609 Lrdstar (User) Senior Boarder Posts: 319 Re:Throttle being touchy .... 1 Year, 3 Months ago   Spydr wrote: Lrdstar wrote: and when I do upgrade to an aluminum ported manifold. Good luck finding one of those. And if you do... even better luck getting it to seal properly. Haven't looked into manifold options yet but I see what you're saying. Looks like they have alum ones for Harleys which appear to use a better style port seal. hmmm an alum manifold with rubber transitions to the R* head might be a good aftermarket opportunity for someone.   Logged     The administrator has disabled public write access.

Page: << Start < Prev 1 2 Next > End >>

Forum List Technical Corner Jetting

...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... -->