Acceleration problem
Beer van Huet:
When I give a full throttle burst, the engine holds in. The engine accelerates fine up tp 3500 rpm with partial throttle and accelerates to full RPM when I play around a little with the gas handle (about halfway). No backfires or any other symptom. I think its lacking sufficient gas or air or proper ignition when opening the throttle fully. Changed the air filter and cleaned the air filter housing and tubes without any improvement. Put additive in fuel tank twice to clean jets, etc but no improvement. Besides, it will accelerate to full speed after a while with partial gas, so I don't think I have a clogged jet. I am thinking about cleaning the petcock from the inside now. Could there be any obvious reason why the engine does not accelerate with a full burst but only with half throttle?
Looking forward to any suggestions
Beer
3W-lonerider:
if it were me..i'd tear the vacumm side of the petcock apart and see if there ain't a tear in the diaphram. if thats the case. sometimes the bike run fine as long as you don't go full throttle. petcock not supplying enough gas. happened to me a couple of years ago. bike ran great. but going down the interstate. i'd give it throttle to pass someone and the response just was'nt there. bike would just pick up and go slowly and took it's good ole time picking up speed. tore mine apart and the diaphram had 2 slices in it.
MP:
+1 on the diaphram. You have less vacuum on hard accell, so if losing some thru a tear, under full throttle might not have enough to open up petcock.
AussieValk:
I have the exact same problem. Hard throttle it will gag at 3500 to 4000 rpm. Had carbs sync'd six months back and bike was running fantastic, then suddenly on one hot day bike began to play up. Checked all lines, changed all filters, but not the petcock diaphram, so thats what the problem must be for me. Hope you find whats causing your problems... 8)
Ricky-D:
You didn't say whether or not, you've done any mods to the bike.
Navigation
[0] Message Index
[#] Next page