Spark plug wires question pos on distributor cap?

cbucner

Seaman
Joined
Jan 11, 2007
Messages
63
Hello!
Does anyone have a pic where it shows the location of the wires like 1,2,3,4
on the distributor cap??
Merc 3.0 4 cyl engine.
Thanks
Or if not a pic where they should be??
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Spark plug wires question pos on distributor cap?

First you have to know where #1 TDC on the compression stroke is. Here is from the manual.

1. Locate No. 1 piston in firing position by either of
two methods described below.
a. Remove No. 1 spark plug and, with finger on
plug hole, crank engine until compression is
felt in No. 1 cylinder. Continue cranking until
pointer lines up with timing mark on crankshaft
pulley, or
b. Remove rocker cover and crank engine until
No. 1 intake valve closes, continuing to crank
slowly until pointer lines up with timing mark
on crankshaft pulley.

Once you locate #1 by looking at the rotor, go clockwise on the cap from your #1 with the firing order of 1-3-4-2

If it's all original, It should look like this.

3.0%20firing%20order.png
 
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