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Old 05-15-2010, 05:31 PM
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Gasser Question

Ok so I have an 86 F-150 that has been sitting for almost 3 years now.

Its had a ton of problems. Its on its 4th engine.

Now I really dont know anything when it comes to gas engines, Ive focused all my attention on diesels

It has a 302 with EFI.

Now it lost compression in 3 cylinders the first time the engine blew with about 15k on it. I bought the truck with this engine in it, had a cam, timing chain, headers and a couple other little mods and was converted to EFI.

So I was 16 at the time and didnt really know any better and got a reman 302 short block from ford to put in cuase it had a warranty.

Well about 3 months later with 2k miles on it, the new engine lost compression in one cylinder.

So I took it to ford and they tore it apart to find the culprit (a different shop that I would trust any of my trucks with put the first one in)

So anyways since they had to go through everything for warranty approval the checked the numbers on my injectors. Well turned out that I had two sets of 4 cylinder fuel injectors in the truck so obviously it was running very lean.

So I know the guys at the dealer pretty well and even though it should not have been covered under warranty they replaced the engine at no cost to me minus the cost of actual 5.0l fuel injectors.

So now ever since then the truck would be back there every month becuase what would happen is the truck would randomly cut out and die and Id have to let it sit and cool down for a couple hours and then I could start it back up.

They threw a lot of parts at it and it never fixed it and finally it died one day about 3 years ago and never would start again, just doesnt seem to be getting any fuel

So enough was enough with throwing money at it so for the past three years its been sitting in a shed.

So there is the background on it, Ive been planning on using it as a project to swap a diesel in becuase the truck is in amazing shape but for now I really just miss driving it and would like to get it running again.

So the issue is that it gets no fuel whatsoever. Now obviously the guy I bought the truck from screwed up the injectors. Now the engine thats in it has about 2k miles on it only. Its all stock now no more cam or anything.

Like I said Im not good with knowing anything about gas engines so I wanted to see what you guys think. Id really like to get it running. I put stabilizer in the fuel but Im sure Im gonna have to drain that and put new stuff in before attempting any type of starting. lol

Thanks in advance and sorry for the essay
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Old 05-15-2010, 05:45 PM
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Ok. by no fuel you mean when someone hits the key and you press the fuel pressure release valve nothing happens? if so fuel pump. When you turn said key on does that fuel pump even make the noise of it turning on? if so see first idea. if not fuel pump or bad wires to it. Thats where id start
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Old 05-15-2010, 06:10 PM
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I agree with kanuck, check your fuel pump and make sure it is getting voltage (cycle the key to the ON position and you should here a buzzing from the tank) Don't forget the fuel pump relay as well Also, pick up a Chilton's or Hayne's Manual for about 15~20 bucks, they are a great source of info and more importantly, torque specs!

If you are hearing the fuel pump kick in, get a fuel pressure gauge and hook it up to the check fitting (should be near the back of the engine on the fuel line, looks similar to a valve stem on a tire) If you are getting little little to no pressure, I would remove the in line fuel filter and replace that and try it again (that fuel requires a special tool you can snag at any auto parts store)

If you change the filter and still have little to no fuel pressure, I would bite the bullet and drop the tank to inspect the tank and flush the lines. Mounted on the fuel pump should be what is called a sock filter, those have a tendency to break down and clog the fuel pump or become clogged with age. And if it were my truck, I would go ahead and replace the fuel pump before putting the tank back on, just as cheap insurance so you KNOW that's not the problem.

Hope some of that helps, man! Good luck, and if all else fails, I'll take it off your hands
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Old 05-15-2010, 06:11 PM
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The original problem you are describing with the engine dying after it gets hot, and then running again after it cools down is a well documented recall from Ford for many of the mid-80s to mid-90s 5.0s. It is caused by the electronic ignition module that is directly mounted on the distributor. I had a similar problem on an 89 Bronco. It always appeared to be a fuel problem, and I swapped both the fuel pump and the fuel pump relay.

I think the fix from Ford was to re-locate the ignition module to the fender well.

Anyway, if you think the problem is fuel, check the relay, the crash sensor, and then the pump.
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Old 05-15-2010, 07:12 PM
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Quote:
Originally Posted by Gene View Post
The original problem you are describing with the engine dying after it gets hot, and then running again after it cools down is a well documented recall from Ford for many of the mid-80s to mid-90s 5.0s. It is caused by the electronic ignition module that is directly mounted on the distributor. I had a similar problem on an 89 Bronco. It always appeared to be a fuel problem, and I swapped both the fuel pump and the fuel pump relay.

I think the fix from Ford was to re-locate the ignition module to the fender well.

Anyway, if you think the problem is fuel, check the relay, the crash sensor, and then the pump.
I remember them telling me that they did replace the electronic igintion control module one of the many times it was at the dealer. lol

Quote:
Originally Posted by 05_PSD_Erik View Post
I agree with kanuck, check your fuel pump and make sure it is getting voltage (cycle the key to the ON position and you should here a buzzing from the tank) Don't forget the fuel pump relay as well Also, pick up a Chilton's or Hayne's Manual for about 15~20 bucks, they are a great source of info and more importantly, torque specs!

If you are hearing the fuel pump kick in, get a fuel pressure gauge and hook it up to the check fitting (should be near the back of the engine on the fuel line, looks similar to a valve stem on a tire) If you are getting little little to no pressure, I would remove the in line fuel filter and replace that and try it again (that fuel requires a special tool you can snag at any auto parts store)

If you change the filter and still have little to no fuel pressure, I would bite the bullet and drop the tank to inspect the tank and flush the lines. Mounted on the fuel pump should be what is called a sock filter, those have a tendency to break down and clog the fuel pump or become clogged with age. And if it were my truck, I would go ahead and replace the fuel pump before putting the tank back on, just as cheap insurance so you KNOW that's not the problem.

Hope some of that helps, man! Good luck, and if all else fails, I'll take it off your hands
Wow that is a lot of good info right there! Thanks. Now like I said I havent touched the truck in a couple years. lol When I say I didnt think it was getting fuel that involved me turning the key over and the truck was just cranking and nothing happened. I will have to get a new battery and check everything you just described, someone had told me a while ago it may be the fuel pump, to be honest I never listened to hear if it kicked on but when I got back up to my house in wisconsin in two weeks I am going to check through everything you just listed.

What kind of fuel pressure should I be seeing?

So the fuel pump is located inside the tank then? That may be a very stupid question but like I said when it comes to gas engines Im a moron.

And I could never give that truck up. I love that thing even if it does nothing right now. lol

Quote:
Originally Posted by kanuck15 View Post
Ok. by no fuel you mean when someone hits the key and you press the fuel pressure release valve nothing happens? if so fuel pump. When you turn said key on does that fuel pump even make the noise of it turning on? if so see first idea. if not fuel pump or bad wires to it. Thats where id start
Thanks for the help man, my definition of not getting fuel was posted above, I need to check all that since I havent screwed with the thing in a long time

Last edited by Matt P; 05-15-2010 at 07:17 PM.
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Old 05-15-2010, 08:22 PM
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Quote:
Originally Posted by Matt P View Post
Wow that is a lot of good info right there! Thanks.

No Problem Man, glad I could help

What kind of fuel pressure should I be seeing?

Not 100% sure, but a chilton or haynes manual will tell you for sure. If I would have been at my parents house, I could have told you as I have a Haynes manual for this vehicle there.

So the fuel pump is located inside the tank then? That may be a very stupid question but like I said when it comes to gas engines Im a moron.

It's all good, only dumb question is the one you don;t ask! I am pretty sure they fuel pump is in the tank Ford was a little weird on vehicles from time to time you know, random mid year half year changes and things

And I could never give that truck up. I love that thing even if it does nothing right now. lol

it was worth a try
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Old 05-15-2010, 08:28 PM
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I told you pump a while ago!
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Old 05-15-2010, 08:31 PM
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Originally Posted by dhanna6powerstroke View Post
I told you pump a while ago!
Thats right it was you that told me the pump Any idea on the cost of those? I might just pick one up and bring it with me to wisconsin to throw in there when I go up over memorial day

Quote:
Originally Posted by 05_PSD_Erik View Post
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Thanks again! I think I actually have a haynes manual too. lol
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Old 05-15-2010, 08:36 PM
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Quote:
Originally Posted by Matt P View Post
Thats right it was you that told me the pump Any idea on the cost of those? I might just pick one up and bring it with me to wisconsin to throw in there when I go up over memorial day



Thanks again! I think I actually have a haynes manual too. lol
Anywhere from $65-$100 depending on tank size and if it has 2 tanks.
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Old 05-15-2010, 09:46 PM
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oh thats not bad at all then, its only got the 19 gallon rear tank
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