[Kfx450 shredder]

Hello everyone, I have a 08 kfx450r new Athena 490 big bore kit, stock cams, je 13:1 piston 100 octane fuel, fuel yoshi exhaust, open air box and a mild port I am running a trinity racing iv fuel controller. I can’t the it to start. Hit it starts right up cold but just cranks when hot.

 

[Dust Devil]

Hello everyone, I have a 08 kfx450r new Athena 490 big bore kit, stock cams, je 13:1 piston 100 octane fuel, fuel yoshi exhaust, open air box and a mild port I am running a trinity racing iv fuel controller. I can’t the it to start. Hit it starts right up cold but just cranks when hot.

Check your valve clearance!
Valve Clearance: between cam and valve lifter
Standard:
Exhaust 0.17 ∼ 0.22 mm (0.0067 ∼ 0.0087 in.)
Inlet 0.10 ∼ 0.15 mm (0.0039 ∼ 0.0059 in.)
If the valve clearance is not within the specified range,
adjust it.

 

[Speedykfx]

Hello everyone, I have a 08 kfx450r new Athena 490 big bore kit, stock cams, je 13:1 piston 100 octane fuel, fuel yoshi exhaust, open air box and a mild port I am running a trinity racing iv fuel controller. I can’t the it to start. Hit it starts right up cold but just cranks when hot.

Kfx shredder do you know if this fixed your issue? Have the exact same issues with pretty much the same build let me know if you can thanks