burnt air filter? bad reed valve maybe?

[rustymaggot]

working on a friends husky 128ld string trimmer. i got it with rotten fuel lines and a carb that wouldnt pump fuel. i replaced the carb with a oem new carb and put in new air filter cause the old one had a hole burned in it. im using canned fuel, so i know the fuel is fresh and good. new spark plug. its burning a hole thru the new air filter. im assuming its backfiring. is this a bad reed valve or something? thanks guys.

 

[The Lorax]

No reeds in these to the best of my knowledge


Sent from my iPhone using Tapatalk

 

[The Lorax]

Sounds like timing is off, check the flywheel hasn’t slipped around on the crank shaft


Sent from my iPhone using Tapatalk

 

[Chainmale]

I Agree that it's timing also

 

[rustymaggot]

thank you. i will check that next.