5.0 H.O. Spark plug wire order on distributor cap - Ford Mustang Forums
 
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post #1 of 10 (permalink) Old 03-14-2009 Thread Starter
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5.0 H.O. Spark plug wire order on distributor cap

Anyone have a diagram of wich wires go where on the distributor cap? I changed the cap today and think I messed up. Also, a diagram of the cylinders with their respective numbers would help a ton.

1988 GT 5.0, MAC Fender Well CAI, MSD Ignition, Ron Davis radiator, Ford Racing 3.73 gears, 5 lug conversion, tubular control arms, fuel pressure regulator, Cobra upper and lower intake, high torque starter, full length headers.
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post #2 of 10 (permalink) Old 03-14-2009
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First heres the cylinder order. (sorry no diagram)

Starting in the front of the engine, passenger side, working your way back toward the trunk: 1,2,3,4

Starting in the front of the engine, driverside, working your way toward the trunk: 5,6,7,8

On your distributor cap there is a #1. the prong above that #1 is where you start the firing order and placing your plugs. So put your first spark plug wire on cylider 1 and on the prong above the #1 on the distributor cap. Now work (placing the plugs) counterclockwise in the correct firing order. Firing order is as follows: 1-3-7-2-6-5-4-8

To clarify: after you placed the first plug on. Next plug will be from cylinder 3 to the prong on the left side of the first one you placed. (counterclockwise) Third plug goes from cylinder 7 to the next prong to the left of the second wire you just put on. So on and so fourth. Hope this helps

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post #3 of 10 (permalink) Old 03-14-2009
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One last thing not mentioned. Plug from your coil goes on the center prong on top of the distributor cap.

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post #4 of 10 (permalink) Old 03-14-2009
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here's the diagram.....
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post #5 of 10 (permalink) Old 03-14-2009 Thread Starter
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Thanks! I got it going pretty well. Now my problem is that the car starts up fine, it started to hesitate for a while then cleared up a bit but it still feels like something isnt right, the wires and plugs had not been changed in a LONG time so I dont know if this has anything to do with it (not I, previous owner never changed them for years). All plugs came out clean. Maybe a plug gap is off? Do I need to reset the comp?

1988 GT 5.0, MAC Fender Well CAI, MSD Ignition, Ron Davis radiator, Ford Racing 3.73 gears, 5 lug conversion, tubular control arms, fuel pressure regulator, Cobra upper and lower intake, high torque starter, full length headers.
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post #6 of 10 (permalink) Old 03-14-2009
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Do you reset the computer? I've never heard of that but maybe.
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post #7 of 10 (permalink) Old 03-14-2009
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i would advise doing a complete tune up

plugs ,wires,cap & rotor

and new fuel filter and check/set timing....
post #8 of 10 (permalink) Old 03-14-2009 Thread Starter
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I was thinking that, I have a fuel filter I haven't replaced yet and the timing has been in the back of my mind, 12-14 degrees right?

1988 GT 5.0, MAC Fender Well CAI, MSD Ignition, Ron Davis radiator, Ford Racing 3.73 gears, 5 lug conversion, tubular control arms, fuel pressure regulator, Cobra upper and lower intake, high torque starter, full length headers.
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post #9 of 10 (permalink) Old 03-14-2009
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Quote:
Originally Posted by dragonride View Post
I was thinking that, I have a fuel filter I haven't replaced yet and the timing has been in the back of my mind, 12-14 degrees right?

base timing 10*

12-14 will be fine...
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this shiz just helped me out alot
EFI Distributor Installation and Initial Spark Calibration

89 foxbody
347 stroker
pypes x pipe with flowmasters
70mm throttle body
trick flow highport heads
trackheat intake
360HP 374TQ mustang dyno
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