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TOPIC: Change Float Bowl Needle Valve Forum Tools Post New Topic Show latest posts Rules

#88308 Cougar (User) Platinum Boarder Posts: 2658 Re:Change Float Bowl Needle Valve 6 Months ago   My pump is gone ....vented the tank by putting some foam over the pipe where the rollover valve I removed was attached ...vented the gascap and removed the screen and also replaced the stock filter with a pingle hiflow one and I was running over 90 in 4th yesterday with 1/4 tank of gas and she was pulling just fine....Coug   Logged       The administrator has disabled public write access. #88371 nazuma (User) Fresh Boarder Posts: 77 Re:Change Float Bowl Needle Valve 6 Months ago   Getting fuel without the pump hasn't been a problem for me either. At least not yet. Probably need some more evaluation time. I don't even have a vented gas cap.   Logged       The administrator has disabled public write access. #89649 ROTOPILOT (User) Fresh Boarder Posts: 87 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   ROTOPILOT wrote: Ok, I know this is an old topic for some, but..... I installed the 2.5 float needle assembly. Set the float level between 1mm-2mm "read at the back side of the float bowl" Took out the inline screen. Shortened the fuel line so it has a nice straight shot to the carb. AND..... She starves for fuel at high cruise. Any ideas? Oh ya.. she's a 2003 Midnight Star Ok... I drilled out the vent tube to just about the same size as the ID of the pipe. Raised the fuel level to just about level with the back mating surface, maybe 1-MM higher. I even tried running it without a gas cap!!!! She still dies. Just made it about 2 blocks. I hate to put the pump back on... Any ideas?   Logged     The administrator has disabled public write access. #89726 Flashback (Moderator) The devil to pay, and no pitch hot Moderator Posts: 4315 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   looks like all you have left to do is adjust the float, you sure don't have a venting problem if it still starves with the gas cap off..has to be a restiction in the supply or the float level..you mentioned putting the pump back on and it was ok.. I assume you did this with the 2.5 valve assembly. the thing is the 2 to 3 lbs pressure the pump puts out is forcing the float to allow a little more gas in the bowl that gravity feed can't do.. I think you need to raise the float..   Logged       The administrator has disabled public write access. #89727 BigBoyinMS (User) BigBoy. BigBike. Expert Boarder Posts: 465 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   Suggestion: Set your bike up as level as you can. Turn off the petcock and remove the fuel hose. Get a new piece of hose long enough to hang into a can and turn on the fuel. (Not on reserve) If you get good flow then plug on your fuel filter and see what kind of flow you get through it. May need a new filter or maybe a different brand that flows better. Basically you just want to narrow done WHERE the problem is. Tank, filter or carb.   Logged     2006 Midnight. Roland, The Roadie   The administrator has disabled public write access. #89749 ROTOPILOT (User) Fresh Boarder Posts: 87 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   Ok, I'll try the filter next. I had the hose off the carb with no filter on and the fuel flows really well. So I will check it with the filter on and see what that does. Thanks.   Logged     The administrator has disabled public write access. #89751 ROTOPILOT (User) Fresh Boarder Posts: 87 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   Flashback wrote: ...you mentioned putting the pump back on and it was ok.. I assume you did this with the 2.5 valve assembly...... I think you need to raise the float.. Yes I put the pump back on and left the 2.5 valve. I hate to raise the float anymore because it is already at the rear mating surface of the bowl or even a little higher... Like I just mentioned in the earlier post, I will check the filter. I had put a new one on of the same design as the original , but never checked the out flow.   Logged     The administrator has disabled public write access. #89761 ROTOPILOT (User) Fresh Boarder Posts: 87 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   Ok, with the filter on, gas cap on, she flows like a garden hose. Must be in the carb. On the idle circuit its fine, and when I increase the RPM and hold it there while sitting in the garage its fine, but when I start to open the throttle while moving, the bike starts to stutter, then it backfires a few times, then dies completely. Then it takes a while before I can start it. I'm trying to stay in good spirits here..... but I'm starting to lose hope. Sincerely yours: ROTOPILOT   Logged     Last Edit: 2008/05/31 13:04 By ROTOPILOT.   The administrator has disabled public write access. #89763 Flashback (Moderator) The devil to pay, and no pitch hot Moderator Posts: 4315 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   the symtoms you describe sound exactly like loss of fuel, It has to be the float either not set right or sticking. I would raise it up a bit..IMHO. do a bit of searching on the forum, I know Doc has outlined the float setting very precise in a couple of posts..I don't have the stock carb so I'm not up on the measurements..   Logged       The administrator has disabled public write access. #89765 ROTOPILOT (User) Fresh Boarder Posts: 87 Re:Change Float Bowl Needle Valve 5 Months, 3 Weeks ago   Flashback wrote: [quote]the symtoms you describe sound exactly like loss of fuel, It has to be the float either not set right or sticking. [quote] You know I never thought of the float sticking.... I wonder When I ran it in the garage I kept the clear hose on the drain pipe and watched the fuel level, and it dropped a little but never went way down. And I would think if it was sticking it wouldn't matter if I was riding or not. Do you think the level is too high?   Logged     The administrator has disabled public write access.

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