1985 Ford F-150, 5.0L V8, 165,000 Miles

Tiny
DEAN0682
  • MEMBER
  • 1985 FORD F-150
1985 Ford F150, 5.0L V8, 165,000 Miles ---> My wife took the vehicle down to the store and the vehicle was running fine. She came out and it wouldnt start. I didnt hear the external fuel pump so I changed that. But the vehicle still cranks but doesnt turn over. I have no idea what to do. I have chnged the altenator and Distributor. But I noticed when I recieved the vehicle, the distributor Cap was set to a 5.8L which is a different firing oder then is required for this vehicle. I changed the wire to fit the 5.0L firing order and still nothing. Any advice would be appreciated.
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Wednesday, May 30th, 2007 AT 5:04 PM

4 Replies

Tiny
RUDPRO
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My advice would be to get a repair book, like a Haynes or Chiltons. Why did you change the fuel pump? Were you getting 12 volts to the pump and it wasn't tuning on or did you just replace it. Why did you replace the distributor? Are you sure it was bad. Did you follow proper procedure for changing it. When did you change the firing order. After your wife drove it to the store? The firing order couldn't have been wrong if it ran OK to the store. There's too much that could be wrong here. Buy a repair book and make sure you installed the distributor right, that you have the right firing order. Make sure your getting fuel and spark to the engine and spark at the right time.
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Thursday, May 31st, 2007 AT 1:08 AM
Tiny
DEAN0682
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Thanks. I have already got one and been going by it. The Distributor was bad. The Fuel pump wasnt it just stopped working but when Autozone tested it it worked. I changed the firing order back to what it was. But I was saying the engine is a 5.0L (302 CID) but it was set for a 5.8L which is an entirly diff fiing order. IT acts like it wants to to start but doesnt.
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Thursday, May 31st, 2007 AT 9:03 AM
Tiny
RUDPRO
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Make sure your getting proper fuel pressure. I can't access repair info on my computer right now, it's acting up. But that info should be in your repair book. Does it have 2 fuel pumps. If yes, disconnect the line coming out of the tank, put a pan under it and turn the key and see if fuel pumps out. I'm assuming it's fuel injected. It's hard to check unless you take them out and bring them somewhere that can test them.
I understand why you changed the firing order, but I was just questioning that you said it ran fine going to the store. That should be right to change them to the firing order in the book. Buy a spark gap tester, they're pretty cheap and check for a good strong spark at each cylinder. If not, check the ignition coil. Make sure the distributor rotor is pointing at the #1 position at top dead center on the compression stroke. Check the timing chain according to the book. You might want to check for back pressure. Your catalytic convertor might be plugged up. You can use a back pressure gauge or even disconnect the exhaust system. Hope some of this helps. Post back if you have questions.
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Thursday, May 31st, 2007 AT 12:32 PM
Tiny
DEAN0682
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For the Spark Gap Tester. I called autozone and kragen/checker auto, they claim they have never heard of any such thing. I checked and the fuel is being pumped from the tank. As far as the Back Pressure gauge is this the same thing as a fuel pressure gauge?
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Thursday, May 31st, 2007 AT 12:59 PM

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