394xp playing up

[Billy R]

Hi guys, I have a 394 xp with a 28inch bar. From cold starts and runs fine, good compression and starts on third or fourth pull. But when it runs out of fuel it won't start until its cooled right down. Any ideas before I tear it to bits. Already done plug and filter. Cheers Bill.

[Stubby]

Check tank vent . Also dont let it run right out !

[burrell_]

got one word for u

SPUDULIKE

[Rich2484]

Compression test it when it conks out.

 

Could also be coil. Gets hot and stops.

 

Does it ONLY happen when it runs out or when it gets hot. So in other words don't let it run out but keep it going and run it hot.

[spudulike]

Few things, catch it before it runs out of fuel, if you let it go all the way, you need to refil the carb with fuel and that will take a few pulls before it does that. If id does go all the way, try putting the choke on for no more than 3 pulls and then just go on fast idle.

 

It could be the fast idle latch isn't working and that can cause starting issues but is obvious if the machine is started with this engaged and the engine doesn't rev up and the chain spin if the brake isn't engaged.

 

It could be the L screw is set too rich, should be one turn out.

 

Other than that, make sure the tank vent is good, the compression is still good when hot, the impulse line isn't kinked and the fuel lines and filter are good.

[Billy R]

Lately it hasn't been starting with at least tank half full. I was thinking coil.

[Billy R]

Cheers spud, I'll check all that tomorrow and let you know the verdict.

[spudulike]

Lately it hasn't been starting with at least tank half full. I was thinking coil.

 

Check the fuel line isn't holed and the fuel filter us still connected!