302 Firing order

[Billy Toppless]

anyone know the firing order on a 1990 bronco 302?

i mixed up my wires /emoticons/[email protected] 2x" width="20" height="20" />

 

[BroncoJoe19]

I always tell my son to do one wire at a time... because I've done the same thing in the past.

I'm thinking you won't make this mistake again.

My '90 302 ... 15426378

joe

 

[Billy Toppless]

I always tell my son to do one wire at a time... because I've done the same thing in the past.I'm thinking you won't make this mistake again.

My '90 302 ... 15426378

joe

thank u

haha no i wont

i was trying to do it b4 it rained lol

 

[miesk5]

Here ya go; besides firing order, routing is aslo a biggie;

Spark Plug Wire Routing TSB 94-04-10 for 87-93 5.0 - engine miss, spark knock, buck/***** surge and other driveability concerns Source: by Ford via Steve83

see diagrams as well as:

"...Spark Plug Wire Routing for '87-93 5.0L

ISSUE: Engine miss, spark knock, buck/***** surge and other driveability concerns may be caused by induction crossfire. This occurs because of improperly routed spark plug wires.

ACTION: If spark plug replacement is performed, the correct firing order and spark plug wire routing is essential to prevent the possibility of induction crossfire between cylinders. Refer to the following procedures for inspection of the spark plug wire routing and firing order. Properly reroute the spark plug wires if required.

FIRING ORDER

The firing order for 1987-1993 vehicles is 1-5-4-2-6-3-7-8. If #7 and #8, or #2 and #4 spark plug wires are routed next to each other at the separation bracket, an induction crossfire condition can occur.

The firing order for 1994 vehicles is 1-3-7-2-6-5-4-8. On these vehicles the #1 and #3, or #5 and #6 spark plug wires must be separated to eliminate the possibility of an induction crossfire.

To eliminate the possibility of the coil wire becoming disconnected, route the coil wire under the spark plug wires at the distributor cap..."