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installed my new SBT 700 motor and rebuilt CDK2 carb and having the following problems(2002 Freedom):
1. just finished the break in per instructions. when going from idle to 30% ran fine. From 30% throttle to 60% the engine bogs and surges. if I pump the throttle the motor will then accelerate to full speed (90%). from 50% to 90% the motor runs fine. when I rebuilt the carbs with your kit, I replaced everything except the spring and pop off needle and the carb gaskets behind the Torx tamper proof screws(didn't have the tool). did not check pop off pressure either since it ran fine prior to the rebuild. What are your suggestions on what is causing the bogging requiring pumping the throttle to accelerate? When accelerating slowing through the 30% range the engine will stall.
2. due to the above problem I thought I might have fouled plugs so I pulled them. the plugs I used for break in were the old plugs I had in the engine before it blew. I noticed the engine is burning lean (plugs went from nice brownish tan to whitish) during the break in period. put new plugs in and the same thing, whitish looking plugs. All reed valves and cages were resealed when reassembled. I cannot find any loose bolts and all carb screws were tighted to specified torques. cannot find any air leaks. could this problem be related to my carb rebuild? any suggestions?
3. Went to premix with this engine and installed a block off kit. I took the carb fuel lines and blew compressed air into the two lines leading back to the tank and back to the shut off valve to clear unmixed fuel from the lines. added premix fuel to the lines and reinstalled lines. now when I accelerate I notice the fuel in the fuel/water separator bowl goes down below the pick up level of the filter in the bowl and does not recover to fill the bowl until I shut off the engine and let it sit. I'm at a loss to determine why the fuel bowl does not stay full like it used to. Does the carb rebuild have anything to do with the supply of fuel from the tank to the bowl. could my lean condition be coming from this area.
I don't want to run the engine until I figure this out and fix it. thanks in advance for your help
1. just finished the break in per instructions. when going from idle to 30% ran fine. From 30% throttle to 60% the engine bogs and surges. if I pump the throttle the motor will then accelerate to full speed (90%). from 50% to 90% the motor runs fine. when I rebuilt the carbs with your kit, I replaced everything except the spring and pop off needle and the carb gaskets behind the Torx tamper proof screws(didn't have the tool). did not check pop off pressure either since it ran fine prior to the rebuild. What are your suggestions on what is causing the bogging requiring pumping the throttle to accelerate? When accelerating slowing through the 30% range the engine will stall.
2. due to the above problem I thought I might have fouled plugs so I pulled them. the plugs I used for break in were the old plugs I had in the engine before it blew. I noticed the engine is burning lean (plugs went from nice brownish tan to whitish) during the break in period. put new plugs in and the same thing, whitish looking plugs. All reed valves and cages were resealed when reassembled. I cannot find any loose bolts and all carb screws were tighted to specified torques. cannot find any air leaks. could this problem be related to my carb rebuild? any suggestions?
3. Went to premix with this engine and installed a block off kit. I took the carb fuel lines and blew compressed air into the two lines leading back to the tank and back to the shut off valve to clear unmixed fuel from the lines. added premix fuel to the lines and reinstalled lines. now when I accelerate I notice the fuel in the fuel/water separator bowl goes down below the pick up level of the filter in the bowl and does not recover to fill the bowl until I shut off the engine and let it sit. I'm at a loss to determine why the fuel bowl does not stay full like it used to. Does the carb rebuild have anything to do with the supply of fuel from the tank to the bowl. could my lean condition be coming from this area.
I don't want to run the engine until I figure this out and fix it. thanks in advance for your help
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