Re: No fire on number 1 after rebuild
From the CDI Troubleshooting Guide:
NO SPARK ON ONE CYLINDER:
1. Check the timer base?s resistance and output
Wire Color: Check to Wire Color: Resistance: DVA Reading
Brown wire Brown/Yellow wire 900-1100 (35 amp) 150V or more Connected
Orange Orange/Black 93-103 OEM 12-24V Connected
Orange Orange/Black 45-55 CDI 12-24V Connected
White wire Purple wire (a) 0.6V or more Connected
White wire Blue wire (a) 0.6V or more Connected
White wire Green wire (a) 0.6V or more Connected
White wire Purple wire 2nd connector (a) 0.6V or more Connected
White wire Blue wire 2nd connector (a) 0.6V or more Connected
White wire Green wire 2nd connector (a) 0.6V or more Connected
White wire Black/White wire 2nd connector 215-225 Not Applicable
(a) Use a comparison reading as different brands of meters will give different readings. The typical range is 1M to 5M ohms. As long as you have approximately the same ohm reading on all six tests and the correct output with the DVA meter, the Timer-Base should be good. The exception would be if one of the scr?s inside the Timer-Base is breaking down while the engine is running. This can be found indexing the flywheel and checking the timing on all cylinders. If the readings are off, reverse the meter leads and retest to see if the readings are corrected.
2. Check the DVA output on the orange wires from the power pack while connected to the ignition coils. You should have a reading of at least 130V or more. If the reading is low on one cylinder, disconnect the orange wire from the ignition coil for that cylinder and reconnect it to a load resistor. Retest. If the reading is now good, the ignition coil is likely bad. A continued low reading indicates a bad power pack or Timer-Base.
