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Maybe I'll get a better response with my very own thread, sorry to the bro I butted in on...
My evo hesitates when I crank the throttle from idle, sometimes even almost stalls out. Also coughs and act like it's gonna stall when I down shift and then hit the gas to go around a corner. Quite by accident I found that pulling up the enrichener just slightly eliminates the lag/cough when I punch it from idle, so figuring I was running lean I opened the fuel mixture screw about 1/4 turn thinking that would help, but it didn't. Also alot of decell popping, which I kinda like. I was shooting flames out the back, but from experience, found a loose connedtion from battery which cleared up the missing that was causing unburned fuel to be pushed thru. This is after having the S&S carb apart and cleaned thouroghly and replacing everything on the accelerator pump side. When it's running at higher R's no problems, infact it pulled 84 HP and 92 ftlbs of torque on the dyno (after which I started hearing a squeek, or chirp from the primary if I pull in the clutch and let it out, or goose the throttle at low speed, need a heavier duty clutch?) Any suggestions?
(Man I must love this ol bitch, cuz if my wife gave me this much trouble I'd be single again!!!)
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__________________ Ride Safe, Life is short enough!
Doc aka #1 Asshat
87 FLHTC Punched and streched to 89 CI, S&S Super E, White Bro's 2-1headers, Supertrap Muffler. - Just like me, old and ugly, but get's the job done!
Definitely accel pump adjustment - adding extra fuel via the enrichener fixes the prob.
I dont know S&S carbs, but usually you can bend the accel pump rod or adjust the mechanism some way to get some more fuel into the engine.
check the accel pump is working by taking the air cleaner off and quickly opening and closing the throttle, you should see a steady stream of fuel coming from the nozzle. if not you have a blocked nozzle or fuel path.
__________________
2009 King - "One King to Rule them All"
Flame Blue / Pewter Pearl. HDI spec - ABS and Security etc. ABS disabled (its rubbish).
S&S 124 hot set up kit w S&S 640 gear driven cams / SE 58mm TB and injectors / SEST / Feuling pump and plate / V&H Power Duals / V&H Basic Slip Ons. 12.25 @108mph with screen n bags on.
Secret Weapon - Escort 9500ci
There is an acc. pump adjustment on the right side of the carb. Back it out in 1/8 turn increments and test sitting still. Quickly crack the throttle and listen for any hesitation. Also, what int. jet are you running? If my memory serves me correct you should be at a .295 or .31. As for the air/fuel screw, that is not going to adjust anything except at idle. That setting should be turn in until ready to die and then turn out until ready to die and set in between those settings. Long story short, assuming everything was allright before you took the carb apart I would suggest going after the acc. pump adjustment.
Im running a 78 and a 33 (stroker) Tried up and down a size on both, no difference. Will try adjusting the accelerator pump screw and let ya know.
__________________ Ride Safe, Life is short enough!
Doc aka #1 Asshat
87 FLHTC Punched and streched to 89 CI, S&S Super E, White Bro's 2-1headers, Supertrap Muffler. - Just like me, old and ugly, but get's the job done!
There is an acc. pump adjustment on the right side of the carb. Back it out in 1/8 turn increments and test sitting still. Quickly crack the throttle and listen for any hesitation. Also, what int. jet are you running? If my memory serves me correct you should be at a .295 or .31. As for the air/fuel screw, that is not going to adjust anything except at idle. That setting should be turn in until ready to die and then turn out until ready to die and set in between those settings. Long story short, assuming everything was allright before you took the carb apart I would suggest going after the acc. pump adjustment.
any chance you could post a pic of these 2 adjustments?
Not to sure how to post pics but these are real easy to see and get access too. The air/fuel screw in dead center on the top of the carb with a knurled flathead screw and the accel pump adjustment is on the right side of the carb above the accel pump bellows. Let me know if this helps
__________________ Ride Safe, Life is short enough!
Doc aka #1 Asshat
87 FLHTC Punched and streched to 89 CI, S&S Super E, White Bro's 2-1headers, Supertrap Muffler. - Just like me, old and ugly, but get's the job done!
throttle "lag" and decel popping
