Question about 1989 Ford F 150
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Posted on Jan 02, 2017
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Posted on Apr 05, 2009
Ford Pick-ups and Broncos 1987-1996 Repair Guide
FIRING ORDERS (see Figures 1, 2, 3 and 4)
To avoid confusion, replace spark plug wires one at a time.
Fig. 1: 5.8L engine-nl-> Firing order: 1-3-7-2-6-5-4-8-nl-> Distributor rotation: Counterclockwise
Fig. 2: 4.9L engine-nl-> Firing order: 1-5-3-6-2-4-nl-> Distributor rotation: Clockwise
Fig. 3: 5.0L and 7.5L engines -nl-> Firing order: 1-5-4-2-6-3-7-8-nl-> Distributor rotation: Counterclockwise
Fig. 4: 6.9L and 7.3L Diesel engines-nl-> Injection order: 1-2-7-3-4-5-6-8
I hope help you with this (remember rated this help) Good luck.
Posted on Oct 07, 2009
SOURCE: firing order on a 1990 f150 302
The rotor turns counterclockwise and the order depends on if you have an engine with a roller cam or a flat tappet cam. If it is a flat tappet cam, it is 1-5-4-2-6-3-7-8. If you have a roller cam, it is 1-3-7-2-6-5-4-8. You will either have an H.O. motor or not. H.O. is roller motor. You will also see the firing order etched into the intake manifold.
Posted on Mar 31, 2010
1-5-4-2-6-3-7-8 The rotor turns counter-clockwise. Make sure to keep #7 and #8 spark plug wires separated. The 5.0L had a problem with 7 and 8 cross-firing because they fire so close to each other. Ford changed the firing order on that engine, in later years , because of that reason. Hope this helps ya... Cobra :-)
Posted on Jun 13, 2010
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