johnfinct wrote:Thanks for the reply's. It is a distributor, new cap, new roter and I did swap the plug wires of 3 and 4 and it still doesn't run on all cylinders.
You swapped the two wires but did you have the correct firing order before that? The cylinder firing sequence is 1,3,4,2 clockwise as you are facing the front of the distributor cap on the battery ignition.
Eugene wrote:Timing light. Cylinders #1 and #4 fire when the pointer and timing mark on pulley line up with pointer. Cylinders # 2 and #3 fire 180 degrees off the pulley timing mark. Hand crank and chalk to indicate the approximate 180 degree position on pulley.
Just to add to what Eugene suggested, on battery ignition units there may be two pulley notches on the front crankshaft pulley, I mark them with a bottle of white-out for better visibility:
-loosen the mounting nuts holding the battery ignition unit in place so that there is minimal free play
-with the tractor running at low idle, set the variable advance on your timing gun to 0, the light should match up with the TDC notch
-with the tractor running at high idle, keep the variable advance at 0, the light should match up with the BTDC notch (the first notch the pointer comes to)
-slowly rotate the ignition body in or out until the marks line up with the light
-retighten the mounting nuts to lock everything in place
Before making any adjustment to the ignition body at high idle, be sure it is advancing properly, and only needs fine tuning.
**edit---spelling