Question about 1991 Ford F150

1 Answer

I have a 1991 f150 4x4 / 5.0 l engine. I understand the firing order is 15426378 but need to know the cylinder placement on the block. Is it 1234 - 5678 on alternating sides? and if so which side is which.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 3,092 Answers

Hope this was very helpful.

I have a 1991 f150 4x4 / 5.0 l engine.  I - 1c3c2e3.gif

Posted on Aug 27, 2010

Testimonial: "Thank you very much!!!! So much appreciate the timely responce!!!!"


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Distributor cap firing order

When facing the engine from the front of the truck, the cylinders are numbered from front left to rear left side of engine 1234. the right side would ten be from front to back 5678. The firing order for a 302cid engine (5.0 litre) is 15426378. The number 1 plug wire in your distributor cap should typically be located on the back side of the cap itself, but the best way to know is to pop the cap and turn your engine over by bumping your starter momentarily until you get your timing marks where you can see them on your harmonic balancer. To ensure you are at top dead center, you may want to pull spark plug number one and stick a screwdriver into the hole. If the screwdriver is stopped because it hits something right away, this means you are 180degrees off and will need to again bump your starter until you once again align your timing marks and then check the cylinder with your screwdriver. this time it should easily enter the cylinder. replace your spark plug and attach the plug wire to the spark plug. Now looking at the rotor underneath the distributor cap, the position it is pointing to is where you plug in wire number 1. You wire your distributor cap counter-clockwise 15426378. I hope this helps you out.

Apr 09, 2015 | 1986 Ford F 250

1 Answer

I have crossed my sparkplug wires. what do i do

How many cylinders ?? sorry to appear thick but iam in europe and never seen this car ,if a 6 then 153624 is one firing order 142536 another 15486372 15426378 for 8 cylinders are the only 2 firing orders i can find in my book at the moment as remember here in europe big engines is a luxury for the rich try paying 10 dollars a gallon and you will soon buy a small diesel engined car

May 11, 2014 | 2005 Buick Terraza CXL

1 Answer

Firing order for 390 engine

left bank passengers side is 1234 drivers side 5678 fireing order is 15426378 clockwise rotation good luck

Sep 11, 2011 | Ford F-100 Cars & Trucks

3 Answers

Need firing order for 1991 ford mustang lx 5.0 ho

the normal 302 is 15426378 the H.O. is 13726548

Apr 10, 2011 | Ford Mustang Cars & Trucks

2 Answers

I need to know the ignition timing for a big block 460 ford also do the cylinders fire straight down or do they go from one side to the other of the engine

Your cylinders 1-4 passenger side,5-8 drivers side. Firing order is 15426378, looking at engine #1 is at 1 o'clock position, and order goes counter clockwise. The timing varies from year to year - call Ford w/your eng. # for exact timing. To get you in the ballpark,12 degrees BTDc if you have a vac guage, connect to a vac source on intake, crank motor up turn distributor until you get highest vac reading, then back off 3 lbs of vac.

Jan 03, 2011 | Ford F-150 Cars & Trucks

3 Answers

Trying to find a firing order diagram for a 91 ford aerostar 4.0L V6. I have a book for it, but it is impossible to put the plug wires on the coil block in the order they describe, wires are too short! ...

For the 4.0L V6:
Firing Order:

Ignition Coil Connections:

Aug 08, 2010 | 1991 Ford Aerostar Extended

1 Answer

We know the firing order for plugs and wires but we need to know where #1 2 3 etc start from

Your number one cylinder is always the front most piston, usually left front of the engine. If you follow the wire back to the coil pack or dist, whatever you have, you will have the number one, then you know the order, just go by it, and it should give you the rest of the pistons. A V6 sometimes goes, 123 on the left, and 456 on the right, but not always. They can cross over, left, right, etc. The 4 cylinder overhead cam engine is 1234, the firing order is cast into the engine block on all engines. I don't know what engine you have , but hope this helps.

Jul 01, 2010 | 1991 Chevrolet Corsica

2 Answers

Fireing order for a 5.0 motor diagram with distributer

1-5-4-3-6-2-7-8. should be on the intake manifold. Up to and including 1984. Left bank is 1234 right bank is 5678. Distributor turns counter clockwise. 4 8
3 7
2 6
1 5

Sep 21, 2009 | 1983 Ford Bronco

1 Answer

Need to know correct wiring of the 8 spark plug wires

first you need to figure out which one is number 1. the firing order is counterclockwise 15426378

Sep 20, 2009 | 1997 Chevrolet Cavalier

Not finding what you are looking for?
1991 Ford F150 Logo

Related Topics:

63 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

5655 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides