Fuel prime issue Husqvarna string trimmer

[thisoldgoat]

Machine is a Husky 122c donated to me in non-running condition.

Compression and spark are both good. The engine will fire one or two revolutions now and then when attempting to start it.

The issue seems to be lack of fuel delivery, specifically the priming system.

Operating the carb mounted primer bulb pulls fuel from the tank but pushes mostly air back through the tank return line no matter how many times the bulb is depressed. Bulb was removed and inspected under a bright light, no defects are evident. The valve is supple and intact as well.

It seems to be bringing air into the circuit, but where?

 

[brenndatomu]

Probably has a cracked fuel line in the tank

 

[Mutineer]

Could also be a bad coil, sometimes they will fire an occasional spark but not consistently, leading a the odd one or two firing then nothing

 

[ericm979]

Check the fuel hoses and the hoses that go to the primer. Also the primer bulb may have a small crack in it.

 

[thisoldgoat]

Thanks for the replies... I'll inspect it again.