I have had a couple just the other day I pulled and gapped my plugs I used a modern day cap so I could torque the head without getting zapped with the motor running. i then proceeded to put the plug wires on wrong, tried to start it and it back-fired I thought now what? Dawned on me what I had done. started to think about everything else that could be a problem i am the problem.
I had a 37 pickup rebuilt the motor used a separate coil to power the truck since it was beefed up a little had juice checked everything double checked valve gaps double checked timing, even pulled the intake to recheck valve lash and timing cover to recheck that all good. Put it all back finally occurred to me to check the coil yep that was it brand new out of the box bad(1st time that ever happened) Over the years most problems were small minor things we tend to look for bigger issues hence the kiss principle.
I had a 37 pickup rebuilt the motor used a separate coil to power the truck since it was beefed up a little had juice checked everything double checked valve gaps double checked timing, even pulled the intake to recheck valve lash and timing cover to recheck that all good. Put it all back finally occurred to me to check the coil yep that was it brand new out of the box bad(1st time that ever happened) Over the years most problems were small minor things we tend to look for bigger issues hence the kiss principle.
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