Hey there, I have a Bigfoot with a functioning clutch lever and a 29cc RC Chung Yang engine attached.
Background:
I recently installed a new Chung Yang head and piston. Broke in the motor and was hitting max RPMs. Took it out on the trail near my home yesterday and it stranded me.
Issue:
Went down a hill on it, let the engine die and started it back up. When I dropped the spindle on the tire it misfired, kicking the engine back up and dropping it back down on the tire jerking the ped back and forth until it stopped. Last time I had this I replaced the spark plug and it work fine again. Not the case with this.
Work/Inspection Since Issue:
I took the thing apart again and inspected the cylinder. There was a SLIGHT scratch along the side of the piston.
I bolted the head back up adding washers and anti-seize since I wasn't using any on the head previously.
I replaced the spark plug with a brand new NGK plug.
I attempted to run it this morning and it misfired, sputtered, and bounced again.
There's white smoke constantly coming from the exhaust pipe.
The engine idles fine and even hits full RPMs -very responsive- while the spindle is above the wheel.
Questions:
What could it be? I hear misfires are usually spark issues. Is it worth getting a new magneto coil?
Honestly just considering a new engine from DDM for $200 but I'd love to fix it if possible.
Background:
I recently installed a new Chung Yang head and piston. Broke in the motor and was hitting max RPMs. Took it out on the trail near my home yesterday and it stranded me.
Issue:
Went down a hill on it, let the engine die and started it back up. When I dropped the spindle on the tire it misfired, kicking the engine back up and dropping it back down on the tire jerking the ped back and forth until it stopped. Last time I had this I replaced the spark plug and it work fine again. Not the case with this.
Work/Inspection Since Issue:
I took the thing apart again and inspected the cylinder. There was a SLIGHT scratch along the side of the piston.
I bolted the head back up adding washers and anti-seize since I wasn't using any on the head previously.
I replaced the spark plug with a brand new NGK plug.
I attempted to run it this morning and it misfired, sputtered, and bounced again.
There's white smoke constantly coming from the exhaust pipe.
The engine idles fine and even hits full RPMs -very responsive- while the spindle is above the wheel.
Questions:
What could it be? I hear misfires are usually spark issues. Is it worth getting a new magneto coil?
Honestly just considering a new engine from DDM for $200 but I'd love to fix it if possible.
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