2000 Sportster 210hp Won't plane. Stumped.

[Sandman251]

Hi.
Thought I'd check in for a little help I'm having with a new-to me 2000 sportster 1800 with a 210hp carb motor. Boat starts and idles fine. I hear the fuel pump when I turn the key on.No surging or missing. No Cavitation. When I bring the throttle up, rpms run to 4K and won't quite plane. Fresh fuel, new charged battery, compression is 125lbs X 5, 1 at 120lbs. Stator/red wires test 30V cranking, 100V at idle. Coils are o.k. Fuel pressure/volume OK. Mech. told me to choke it for a second while in this condition and see what happens. Nothing did. As a matter of fact, even at idle, nothing happens when I choke it. I'm pushing the key in for choke. Where should I go from here? Guessing carbs? I'd appreciate any help at all.

 

[Lumps]

have you checked the wear ring? it sounds like you are saying the engine is running fine? or are you saying you can't get the RPMs up all the way ( I don't know what your engine goes up to)?

 

[Tim75]

Have you visually checked all carbs to make sure all throttle plates are opening 100% ?