- Messages
- 444
- Location
- Montreal
Hey guys, got a bit of a brain tickler here!
First start with everything stock gas tank full I primed with the bulb until only fuel was in the return line, and tried and tried to get my mega truck to start, spend a few hours and all my energy trying to no a avail, saw no spark and had to go rest. Next day put the plug, primed again, no air at all, fired up first pull, ran 10-20 seconds then died like I shut it off, had taken the choke off first so I had to block the carb with one hand, but nothing, finally tried priming and the carb was dry and had to pump the air out priming. Poof the carb gods made that issue vanish and I ran it several different days till finally running the tank dry with never an issue.
Ok fine, what's the problem?
Fast forward to taking out the engine and play with the clutch springs, change the reed block and put an 1107 carb just to have a sealed choke and low speed adjustment. Ok that was fine and got it all ready to fire up.
Put a 1/4 tank only, primed, fired up like a champ, great throttle response, smoke, ran 10-20 seconds and died out like it was out of gas, first on throttle was bogging then idle then nothing, pushed the primer and it was only air coming out, refilled the line with gas and it ran again same thing then the line needed to be primed again and would refill no problem with the primer but only run few seconds to less than a minute.
Been playing with the jet screws a bunch, held the back wheels up and nailed it with the front wheels ripping the ground up and its powerful until it starts to bog out then die.
It's a new carb, put the spiral diaphragm.... but I'm baffled the stock carb did this at first now a different one does it all the time. Going to be extra critical of the fuel lines to the tank next look, but was wondering if this gremlin has been seen before????
First start with everything stock gas tank full I primed with the bulb until only fuel was in the return line, and tried and tried to get my mega truck to start, spend a few hours and all my energy trying to no a avail, saw no spark and had to go rest. Next day put the plug, primed again, no air at all, fired up first pull, ran 10-20 seconds then died like I shut it off, had taken the choke off first so I had to block the carb with one hand, but nothing, finally tried priming and the carb was dry and had to pump the air out priming. Poof the carb gods made that issue vanish and I ran it several different days till finally running the tank dry with never an issue.
Ok fine, what's the problem?
Fast forward to taking out the engine and play with the clutch springs, change the reed block and put an 1107 carb just to have a sealed choke and low speed adjustment. Ok that was fine and got it all ready to fire up.
Put a 1/4 tank only, primed, fired up like a champ, great throttle response, smoke, ran 10-20 seconds and died out like it was out of gas, first on throttle was bogging then idle then nothing, pushed the primer and it was only air coming out, refilled the line with gas and it ran again same thing then the line needed to be primed again and would refill no problem with the primer but only run few seconds to less than a minute.
Been playing with the jet screws a bunch, held the back wheels up and nailed it with the front wheels ripping the ground up and its powerful until it starts to bog out then die.
It's a new carb, put the spiral diaphragm.... but I'm baffled the stock carb did this at first now a different one does it all the time. Going to be extra critical of the fuel lines to the tank next look, but was wondering if this gremlin has been seen before????
