Rmz 450 hard to start

Create New Tag

1/31/2019 4:26 PM

Hello I have a 2008 Rmz 450 the bike won't start when cold, you can roll start it it will start and run fine. When you kill the engine if you try to start it back immediately it will fire up first kick but if you let it sit for 30 seconds or more it becomes very difficult to start again if you leave it much longer it has to be roll.started again. The valves are in spec, timing is right, nothing mechanically wrong. I was wondering if anyone has any ideas on why it does this, maybe a fuel pump issue or somethng in the firing?


1/31/2019 5:15 PM

Sounds like the injector is dirty and leaking fuel. Remove and clean it using ultrasound cleaner.

Paw Paw


2/2/2019 7:40 AM

check the fuel filter inside the fuel pump. if not, go like paw paw said and check the injector.