efi 125 starts then dies....

thumpa · 02-06-2023, 08:21 AM

hello!
i have a chinese made 125 efi bike and have a problem with it.
basically, it will start first push of the button but then dies (the pump primes at switch on and fuel is reaching the engine.
battery fully charged.
i have read the ecu and it shows no faults.
i tested the spark plug to see if it was sparking ok (removed and held to engine whilst turning it over) and discovered when i turn the engine over it sparks for a few seconds and then nothing until i switch off the ignition and back on again and then the same again... again... again.
i know the workings of an ecu are a dark art but i am assuming the ecu kills the ignition after a few seconds because it hasn't started in a set time?
can any one help?
thanks.

02-06-2023, 08:21 AM	#1
thumpa Join Date: Feb 2023 Posts: 24	efi 125 starts then dies.... hello! i have a chinese made 125 efi bike and have a problem with it. basically, it will start first push of the button but then dies (the pump primes at switch on and fuel is reaching the engine. battery fully charged. i have read the ecu and it shows no faults. i tested the spark plug to see if it was sparking ok (removed and held to engine whilst turning it over) and discovered when i turn the engine over it sparks for a few seconds and then nothing until i switch off the ignition and back on again and then the same again... again... again. i know the workings of an ecu are a dark art but i am assuming the ecu kills the ignition after a few seconds because it hasn't started in a set time? can any one help? thanks.
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