Hey guys,
I have a highly modified GX200 go kart motor. The issue I am having is I can get the motor to idle but it will cough and splatter then stall under light to medium throttle while the motor is under load. A list below shows what I have done so far to diagnose the fault, but after carrying out all the below things.....I still ha e the fault!
*Remove carb, clean and blow out all jets, and ports (no issues found)
*Change modified carb to stock carb, (same motor running issue)
*replace carb gaskets with new ones and check carb insulator with no cracks found
*replace ignition coil with a new one
*sand slight rust off flywheel magnets
*replace spark plug with new one
*check flywheel key way still in tack (no issues found)
*loosen fuel cap lid while motor running (made no difference)
*change fuel with new fuel
*change fuel lines with new ones and replace fuel filter
*reset value clearances
*remove cylinder head and check valves not burnt (all appears ok, including rocker gear) replaced head gasket
*bypassed ground connection from coil (no difference found)
*check fuel flow from tank to carb, (good flow seen)
*Tried running engine with no air filter (made no difference)
Pretty sure that covers everything I have done so far, and as I mentioned earlier the motor still runs like [censored] anywhere above idle and will soon after stall....but idles fine!
Yesterday I tested the cylinder compression and I got 55psi to begin with (best I could get) then 76psi after adding a bit of oil to the cylinder. So my question is, could the issue with cylinder compression cause my motor to run like [censored] above idle?? I really am beginning to run out of options but I know the fault lays in there somewhere. Any help would be much appreciated! Thanks
I have a highly modified GX200 go kart motor. The issue I am having is I can get the motor to idle but it will cough and splatter then stall under light to medium throttle while the motor is under load. A list below shows what I have done so far to diagnose the fault, but after carrying out all the below things.....I still ha e the fault!
*Remove carb, clean and blow out all jets, and ports (no issues found)
*Change modified carb to stock carb, (same motor running issue)
*replace carb gaskets with new ones and check carb insulator with no cracks found
*replace ignition coil with a new one
*sand slight rust off flywheel magnets
*replace spark plug with new one
*check flywheel key way still in tack (no issues found)
*loosen fuel cap lid while motor running (made no difference)
*change fuel with new fuel
*change fuel lines with new ones and replace fuel filter
*reset value clearances
*remove cylinder head and check valves not burnt (all appears ok, including rocker gear) replaced head gasket
*bypassed ground connection from coil (no difference found)
*check fuel flow from tank to carb, (good flow seen)
*Tried running engine with no air filter (made no difference)
Pretty sure that covers everything I have done so far, and as I mentioned earlier the motor still runs like [censored] anywhere above idle and will soon after stall....but idles fine!
Yesterday I tested the cylinder compression and I got 55psi to begin with (best I could get) then 76psi after adding a bit of oil to the cylinder. So my question is, could the issue with cylinder compression cause my motor to run like [censored] above idle?? I really am beginning to run out of options but I know the fault lays in there somewhere. Any help would be much appreciated! Thanks