HELP

[JDSkyski]

Fuel flow is good I took it apart again and can get .o32 saftey wire down all idle passages. Starts on next roll after pops on choke but will only run good for about 10 seconds before it backfires thru exhaust and or dies unless you use almost exactly 1/2 choke then it will run a lot better. This is all at just over 1/2 throttle. PLEASE HELP i"m at wits end. PS timing has not been touched since this tractor ran great. more info in previous post

 

[T]

weak spark?

 

[BushogPapa]

Which model are you working on..??

Ron.

 

[JDSkyski]

1955 JD 70 All fuel with a rebuilt 3 way valve. Fuel flow is good

 

[JDSkyski]

What is best way to check for weak spark?

 

[DONMYEIL]

Sounds like it doesnt want to run on load side of the carb. Have you had the load valves out (2) and cleaned, is the load needle turned out abt 3 turns from closed .