Throttle response problem
Thread Starter
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Cruiser
Joined: Jul 2011
Posts: 161
Likes: 5
From: Kelowna, BC
2000 Super Glide throttle response problem
Hey all. It’s been a while since I’ve been on here and hope someone can help with an issue I can’t seem to figure out.
I got a 2000 fxdx with a 103 Stroker. I’ll start with my build and then what’s happening.
Thunderheader pipe
Fully rebuild tranny with jims updated shifter assembly
S&S super G
Primo oversized ring gear
Barnett clutch
New starter
103 inch motor
4 3/8 stroker
Flat top pistons
2012 heads with bigger valves
S&s 510 gear drive cams
Comp cam lifters
Dyno'd at 96 horsepower with 112 foot lbs torque
External oil cooler
New battery with tender
Compression releases
New screaming eagle ignition module
Msd coil
It fires up awesome and once warm idles nicely. If
you stab the throttle to rev it up quickly it chokes right out. Right to the point it’ll die. When your riding at low speeds it’s jerky, has lots decel pop at lower RPMs. At highway speeds, she hauls *** with no problems.
To try and fix the problem I’ve done intake seals, jetted the main to a 76, intermediate is a 31, replaced my petcock cause it had a slight leak, fuel is fresh, plugs and wires are new. I’ve double checked for a still possible intake leak and seems fine.
Any ideas wtf else it could be?
Thanks for any help 🍻
I got a 2000 fxdx with a 103 Stroker. I’ll start with my build and then what’s happening.
Thunderheader pipe
Fully rebuild tranny with jims updated shifter assembly
S&S super G
Primo oversized ring gear
Barnett clutch
New starter
103 inch motor
4 3/8 stroker
Flat top pistons
2012 heads with bigger valves
S&s 510 gear drive cams
Comp cam lifters
Dyno'd at 96 horsepower with 112 foot lbs torque
External oil cooler
New battery with tender
Compression releases
New screaming eagle ignition module
Msd coil
It fires up awesome and once warm idles nicely. If
you stab the throttle to rev it up quickly it chokes right out. Right to the point it’ll die. When your riding at low speeds it’s jerky, has lots decel pop at lower RPMs. At highway speeds, she hauls *** with no problems.
To try and fix the problem I’ve done intake seals, jetted the main to a 76, intermediate is a 31, replaced my petcock cause it had a slight leak, fuel is fresh, plugs and wires are new. I’ve double checked for a still possible intake leak and seems fine.
Any ideas wtf else it could be?
Thanks for any help 🍻
Last edited by Mattster; Oct 24, 2022 at 07:12 PM.
Stellar HDF Member
Joined: Feb 2013
Posts: 3,072
Likes: 1,726
From: Dallas, Texas
Look in the S&S setup instructions that came with the carb. Jetting guide, 96" and up, mixture screw 1 - 1 1/2 turns, intermediate .032 - .036, main .074 - .088. Your intermediate jet is too small and running lean. Also check the accelerator pump shot, which may not shooting enough fuel at low rpm. With the engine at operating temperature, open up the pump adjustment 1/4 turn at a time. When ya blip the throttle and a puff of black comes out the pipes, turn it back 1/4 turn.
Thread Starter
|
Cruiser
Joined: Jul 2011
Posts: 161
Likes: 5
From: Kelowna, BC
Look in the S&S setup instructions that came with the carb. Jetting guide, 96" and up, mixture screw 1 - 1 1/2 turns, intermediate .032 - .036, main .074 - .088. Your intermediate jet is too small and running lean. Also check the accelerator pump shot, which may not shooting enough fuel at low rpm. With the engine at operating temperature, open up the pump adjustment 1/4 turn at a time. When ya blip the throttle and a puff of black comes out the pipes, turn it back 1/4 turn.
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