20 Most Recent 1986 Ford F 250 Questions & Answers

Mice love to chew and will make a meal or a nest from almost anything - the trouble is, the evidence of mice you can see that is repairable, is often surpassed by the damage that can't be seen. A mouse can squeeze through any gap that a pencil will fit through.

It is probable many vehicle fires are caused by mice.

The only practical way to proceed is to search the vehicle for further evidence of mice, to remove any debris and repair obvious damage and hope for the best...

1986 Ford F 250 | Answered on Oct 26, 2019

Firing order should cast on your intake manifold in the front/top.

1986 Ford F 250 | Answered on Oct 13, 2018

Ford has owner manual online https://owner.ford.com/tools/account/how-tos/owner-manuals.html?gnav=header-owner
I also recommend HAYNES manuals for detailed instructions. https://haynes.com/en-us/
Many trucks do have an in line fuel filter under the bed.

1986 Ford F 250 | Answered on Feb 17, 2018

I hope you cleaned the fuel line so there weren't any cuttings in the line? I would have probably used a small round file to clean burrs inside metal line. I don't know liter size of engine? I looked at 5.0L--carbed engine--fuel pressure 5--7 psi.
If your fuel injected, the pressure is a lot higher.

1986 Ford F 250 | Answered on Nov 09, 2017

The age 1986 warrants a fuel pump replacement. Check for rodent damage in the fuel tank harness area when you install new pump. Also change the fuel filter.

1986 Ford F 250 | Answered on May 29, 2017

Could they possibly have gotten the timing(check it with a light) off or distributor turned wrong? don-ohio

1986 Ford F 250 | Answered on Mar 31, 2017

remove power steering pump for access if needed and remove fuel lines and return line remove two bolts holding pump and replace w/ new gasket.

1986 Ford F 250 | Answered on Mar 14, 2017

You give no engine information or any information on what testing you have done (if any), do I can't really help at this point sorry.

1986 Ford F 250 | Answered on Oct 31, 2016

My best guess is plugs and/or plug wires, carb or distributor/points. If you haven't changed plugs, wires or points since '86, you are lucky it runs at all. Additionally, could be a crack in the distributor or problems with the coil wire.

1986 Ford F 250 | Answered on Jun 04, 2016

I had one do that one time because it had a body ground disconnected.

1986 Ford F 250 | Answered on Mar 20, 2016

The dealer sells these as one piece with the slave, master and line all together and already bled which is very difficult to do on this.

1986 Ford F 250 | Answered on Mar 20, 2016

First check all your fuses and replace as needed. Then check all your grounds/powers at cluster connector(get wire diagram). If all power/ ground check fine you will need a cluster assembly.

1986 Ford F 250 | Answered on Feb 08, 2016

what do u have hooked up to it??? pull all the fuses and check each one

1986 Ford F 250 | Answered on May 19, 2015

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.

1986 Ford F 250 | Answered on Apr 09, 2015

It sounds like you need to replace the catalytic converter. It will cause all of these symptoms.

1986 Ford F 250 | Answered on Mar 07, 2015

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