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Re: Distributor question
To add to what Maxwedge says, the TDC "mark" is at the pointer twice in the process. Once at "compression" as said. That's where the intake valve has closed, the mixture is compressed and the spark is "thrown" to that cylinder to ignite it. The OTHER time the mark is at "0", is when it's on the "overlap" stroke, where the exhaust valve has closed and the intake valve is just beginning to open. When cylinder #1 is "up" on compressin, #6 is "up" on overlap and vice-versa.
To assure you have it at the right one, remove the spark plug from #1. Disconnect the coil. "Bump" the engine with your finger over the spark plug hole. When the pressure in the cylinder pushes your finger off the hole and the mark is close to "0". THAT'S #1 "compression". This is known in the vernacular as "blowing number 1". Have the rotor point at #1 wire pole and everything will be close enough to start it. Reset ignition timing with a light.
Jim
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