engine noise

[Kymco Symco]

bought as a non runner.....yep i know....
anyway.....starts up.....little rev and you get a sound where i thought either a gear was rattling round on a shaft or a flywheel coming loose sound.....

ripped off the engine cover on r/h and all looks good.....

any ideas ?

[NorWeWa]

Not sure what you mean, "engine cover on the r/h" 

[Kymco Symco]

Not sure what you mean, "engine cover on the r/h"

i thought the sound might be coming from the engine...so i took the cover off the engine which is on the right hand side of the engine....the waterpump side...

[NorWeWa]

Look into the CVT. Remove the cover off the left side rear .

[Kymco Symco]

Look into the CVT. Remove the cover off the left side rear .

i removed the cover....all was tight.....so removed the drive gear on left........one drive from engine.....

started engine...revved up....noise still there.....it kind of sounds like the driver gear that the starter motor turns.....only thing i can think of....

[NorWeWa]

You can get a manual from off this list.  https://kymco.at/kymco_store_view/dowloads/kymco.html 

[Kymco Symco]

You can get a manual from off this list.  https://kymco.at/kymco_store_view/dowloads/kymco.html

thanks...will take a look

[NorWeWa]

Removing the seat and the under seat storage bin will get you a good view of the motor and starter. 

[Kymco Symco]

Removing the seat and the under seat storage bin will get you a good view of the motor and starter.

already did that......all apart to get better access.....

[Kymco Symco]

Bit more more earlier this morning

advice on this please ?


best guess....feels like a crankshaft bearing has failed ?

https://mega.nz/file/oU1gFAQR#VK4ms76-DhTVwA6fccDNQBoxu1Uu7C9YIGyuWa600L4

[NorWeWa]

Can you feel up and down play when you apply force to the Variator, which is on the end of the crankshaft. ?

[Kymco Symco]

Can you feel up and down play when you apply force to the Variator, which is on the end of the crankshaft. ?

the crankshaft seems to have end float...it can move left/right to get that noise and on r/h side it also i think can move up /down

[NorWeWa]

There should be no movement. side to side or in and out. You may have identified your problem.   

[Kymco Symco]

There should be no movement. side to side or in and out. You may have identified your problem.

yes....and it will involve dropping the engine out & stripping it apart

[NorWeWa]

A lot of work for sure, but you learn a lot and labor is the biggest cost in rebuilding a scooter.