Yamaha TRX850 Enthusiasts Forum

Hi guys, I recently gave the bike a service which was due. Noticing it was becoming a bit sluggish prior. After service it was okay for a few weeks then idling became an issue and starting. Changed plugs again with iridium ones. Was idling then when I gave it some stick it was dying, slow build up of revs then died. Then was hard near impossible to restart. Gave it some choke which sometimes helped but would innevitably die. Have flattened battery trying to restart it and has became very frustrating and out of my depth. Any thoughts would be greatly appreciated. Cheers, Jamie.

Maybe a fuel starvation issue, perhaps the inline fuel filter (in the fuel hose) has become blocked gradually over time.
If you`re not comfortable doing the work yourself post up where you are, TRX`ers are a helpful bunch and if there`s any members near you they may well offer you some assisstance.

+1 on fuel starvation. Probably a blocked or more likely kinked hose.
Did you disconnect any hoses in the service, or drain the tank?

+2 on fuel starvation. If you lifted the fuel tank, the lines tend to kink when swinging the tank back down. How do I know this ?

mine had a simular symptoms turned out to be the carbs there was bits loose inside .....

Checked your valve clearances recently? What year is your bike?