hi
HELP!!!!!!!!!!!!!
my 99fx needed a new motor after being stolen and crashed. it still ran but had a large piece of the case broken off, so i purchased a motor but ended up with a f4i motor.
i removed the original motor, put the f4i case/gearbox in my bike and replaced the efi with the original carby setup. i am using the original wiring harness from my bike.
Pretty much everything connected straight up, except for the alternator plug (yellow 3 wire plug)which was modified to fit my harness. there appeared to be only one plug not connected which is at the front left of the motor. i think this is a timing sensor for the efi motor and isnt present on the carby motor.
i changed over the water pump cover and thermostat cover to the ones from the carby motor.
i didnt have the service manual at the time i took out the original motor, so i didnt realise the throttle position sensor shouldnt have been removed.
i put it all back together and it wouldnt start.
after a lot of messing around i purchased the clymer manual, found out about the t.p.s. I looked on the net and tried to figure out how it worked. i think i have it back on correctly.
the readings are as follows-
voltage Va 4.73
at idle 0.44
full throttle (wot) 4.24
are these values correct?
so...........
the motor cranks over.
it wont start, but it gets fuel and does a backfire sporadically with a flame out of the exhaust. im guessing this is due to incorrect timing but i dont know why? ive resorted to hooking the bike up to a car battery so it doesnt go flat trying to start it.
the bike ran with the original motor.
im getting really frustrated. is there some difference with a sensor or something in the motor that im not aware of?
can anyone offer any help or suggestions. i can provide more info if needed;
HELP!!!!!!!!!!!!!
my 99fx needed a new motor after being stolen and crashed. it still ran but had a large piece of the case broken off, so i purchased a motor but ended up with a f4i motor.
i removed the original motor, put the f4i case/gearbox in my bike and replaced the efi with the original carby setup. i am using the original wiring harness from my bike.
Pretty much everything connected straight up, except for the alternator plug (yellow 3 wire plug)which was modified to fit my harness. there appeared to be only one plug not connected which is at the front left of the motor. i think this is a timing sensor for the efi motor and isnt present on the carby motor.
i changed over the water pump cover and thermostat cover to the ones from the carby motor.
i didnt have the service manual at the time i took out the original motor, so i didnt realise the throttle position sensor shouldnt have been removed.
i put it all back together and it wouldnt start.
after a lot of messing around i purchased the clymer manual, found out about the t.p.s. I looked on the net and tried to figure out how it worked. i think i have it back on correctly.
the readings are as follows-
voltage Va 4.73
at idle 0.44
full throttle (wot) 4.24
are these values correct?
so...........
the motor cranks over.
it wont start, but it gets fuel and does a backfire sporadically with a flame out of the exhaust. im guessing this is due to incorrect timing but i dont know why? ive resorted to hooking the bike up to a car battery so it doesnt go flat trying to start it.
the bike ran with the original motor.
im getting really frustrated. is there some difference with a sensor or something in the motor that im not aware of?
can anyone offer any help or suggestions. i can provide more info if needed;