2n back fired

[jls1mod]

i have a old 2n i was mowing and it back fired and then wouldnt stat back up. i replace the coil and points it will stat up now but wont run over a couple off hundred rpms . any suggestions?

 

[Bruce (VA)]

Did you check the timing advance mechanism & set the timing while you had the distributor off?
50 Tips

 

[Den N Ms]

jls1mod,Remove the distributor cap and check inside for carbon tracks ,also check for a broken rotor button.Both will cause backfiring.Worn front axle bushing can cause the axle to hit the cap and break rotors and caps.

 

[KLaRueVA]

You might also want to check for side play in the distributor shaft. A worn bushing will make it impossible to set point gap. Timing will be all over the place.
KL

 

[36 Coupe]

condenser is first suspect in back firing

 

[lha]

All sound like sound advice.I once decided to check mine after a little bad running,and the condenser wire was burned in two.---lha

 

[R Geiger]

If none of the other fixes get you running, you might check the carb float. I have heard of backfiring causes the float to colapse.