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Ford Tractors Discussion Board

Re: 841 timing marks only visible when #4 fires - huh?


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Posted by Texas! on April 02, 2014 at 20:03:17 from (201.148.70.73):

In Reply to: 841 timing marks only visible when #4 fires - huh? posted by William Fissell on April 02, 2014 at 18:56:46:

The pistons in cylinders 1 and 4 are both at TDC at the same time. If #1 is on compression stroke #4 is on exhaust stroke and vice versa.
I assume you are shining a timing light though the "window" in the block onto the flywheel? And the flywheel marks are illuminated by the light only when the light is connected to the #4 plug wire? When you connect the light to #1 plug wire the light does not flash? If this is all true then you are not getting any "fire" through the #1 wire to trigger the light and your engine is running on 3 cylinders.
Regardless of what's happening you can indeed set the initial timing using the #4 cylinder and verify that the advance mechanism inside the distributor is working by revving up the engine and confirming that the timing does advance.


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