Question about 1983 Jeep CJ7

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How do know which is the number one and so forth on the distributor

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  • Jeep Master
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I am not sure where you are on this question, If you are standing there with no plugwires going into the distributer, that was from a proceedural error: Replace and deal with only one plug wire at a time and you never need to determine were #1 plug is...

So, if you are there and no wires to the dist, here is what to do:
Pull #1 spark plug.
Pull dist cap (often a distributer will have been altered and #1 not located as indicated in the book) this method covers that.
So, you need to ground or disconnect the coil wire coil to center of distributer.

you need a push button starter, or assistant.....

You are doing two things, observing the direction that the rotor turns, so after you locate #1, the other wires follow in that same rotational direction.

So, you stick your finger over the #1 plug hole, you need to determine when it is on teh compression stroke...(air comes rushing out)...
this will take several revolutions to accomplish, but you need to rotate the engine over and STOP at or near the Top dead center of #1. Accuracy not huge important, be close.

Now look at the rotor, and it will be pointing to the correct position if the #1 cylinder.

Firing order from that point is often located on engine sticker on radiator support, and often in raised letters somewhere on the block, head or manifolds.

1-5-3-6-2-4 is common.

Posted on Aug 19, 2010

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