The firing order is right, 1-5-3-6-2-4, but be sure the #1 wire is positioned over the rotor when the #1 cylinder is on the top of the compression stroke. (Both valves closed, piston at the top of its stroke. It doesn't matter which cap tower gets the #1 plug wire, but the rotor MUST be pointed at the right wire when the cylinder is ready to fire.

Here's an idiot-proof method of finding the right spot to start the sequence :

Remove the valve cover

Watch the valve springs on the #6 cylinder (NOT #1)

Turn the engine clockwise from the front, using the fan with the spark plugs removed, or roll the truck forward with the transmission in high gear.

Watch the #6 exhaust valve spring (last one in line back by the firewall. When it compresses fully, and then relaxes, start watching the intake valve (next one in line- - -second from the firewall). When you see it BARELY start to move- - - -STOP!

Take the distributor cap off- - - -whichever cap tower the rotor is pointing toward is #1- - - -start the firing order there and follow clockwise- - - -5-3-6-2-4.

This method works EVERY TIME!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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