FIRING ORDERS
NOTE: To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.
If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired.
Fig. 1: 300 cid (4.9L) inline six-cylinder engines Firing order: 1-5-3-6-2-4 Distributor rotation: Clockwise
Fig. 2: 232 cid (3.8L) V6 engine Firing order: 1-4-2-5-3-6 Distributor rotation: Counterclockwise
Fig. 3: 255 cid (4.2L), 302 cid (5.0L), 360 cid (5.9L), 390 cid (6.5L), 460 cid (7.5L) V8 engines Firing order: 1-5-4-2-6-3-7-8 Distributor rotation: Counterclockwise
Fig. 4: 351 cid W & M (5.8L), 400 (6.6L) engines Firing order: 1-3-7-2-6-5-4-8 Distri need a diagram showing the spark plug wires on a - 85762009.gifion: Counterclockwise
SOURCE: I need a spark plug wire diagram for 1987 ford 302
1987 Ford Crown Victoria 5.0L FI 8cyl
Duraspark Type Plug Wires
The spark plug wires used with the Duraspark type ignition system are
5
/
16
in. (8mm) in diameter to contain the higher output voltage. There are
two types of wires used in this system, and some engines may have both
types installed. It is important to properly identify the type of wire
used for each cylinder before replacements are made.
Both types are blue in color and have silicone
jacketing. The insulation material underneath the jacketing on some
plug wires is a silicone layer separated by glass braid. The plug cable
not incorporating the silicone layer is used where engine temperatures
are cooler and are identified with the letter SE with black printing.
The plug cables with the silicone insulation are used where high engine
temperatures are present. These cables are identified with the letters
SS with white printing.
Each spark plug cable, if original, is
marked with the cylinder number, model year and date of cable
manufacture (quarter and year). Service replacement wires will not have
cylinder numbers, or manufacture date.
On any vehicle equipped with a catalytic converter, never allow the
engine to run for more than 30 seconds with a spark plug wire
disconnected. Unburned fuel in the cylinder may ignite in the converter
as it is exhausted and damage the converter.
When
removing spark plug wires, mark and tag the individual wires. Grasp,
then slowly, twist the insulator back and forth on the spark plug to
free the insulator. Do not pull on the wire directly as it may become
separated from the connector inside the insulator. Special tools are
available which can help ease plug wire removal, and prevent damage to
a cable.
When installing a new set of spark plug wires, replace
the wires one at a time so there will be no confusion. Start by
replacing the longest wire first. Route the wire exactly the same as
the original.
Fig. 1: 6 cylinder engine-240Firing Order: 1-5-3-6-2-4Distributor Rotation: Clockwise
Fig. 2: 8 cylinder engine-255, 302, 351, 400Firing Order: 1-5-4-2-6-3-7-8Distributor Rotation: Counterclockwise
Fig. 3: 8 cylinder engine-390, 427, 429, 460Firing Order: 1-3-7-2-6-5-4-8 DistributorRotation: Counterclockwise
Visit autozone.com (free register) for more details.
I hope helped (rememer rated this) Good luck.
SOURCE: spark plug wire diagram for 91 ford f150 302
here is a diagram, if u can't see it go to the link below.
http://autorepair.about.com/library/firing_orders/bl-fo-9225.htm
SOURCE: I need a spark plug
http://autorepair.about.com/library/firing_orders/bl-fo-8575.htm
http://www.ford-trucks.com/user_gallery/sizeimage.php?photoid=238366&.jpg=
Hope this helps.
Fig. Fig. 5: 4.2L (255 cu. in.), 5.0 (302 cu.in.) except HO Engines. Engine Firing Order: 1-5-4-2-6-3-7-8. Distributor Rotation: Counterclockwise
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