Banjo
Old Mossy Horns
In or close to Alamance County. I have an 88 F-150 that has got me stumped.
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It's a FORD!! J/K ha. What's it doing? Maybe one of us here can help....
Does it act like a gas or spark issue? What is your fuel pressure supposed to be? Does it have a crankshaft position sensor?
Spark check, see if it'll cough on ether/starting fluid. If so, its all fuel related and not electric. 99% betting its fuel or electrical portion of the fuel system.... i.e. not the electrical portion of the tune.
So, I think it should be showing about 45 to 60lbs fuel pressure, check the manual. Too low and it won't start or if it does, not run well.
Double check to make sure your fuel lines are not reversed at the pumps and verify the tank switch is working. Check also, prime with key on and check to see if it has an accident switch for a rear end strike. Finally, if there is a fuel pump relay, make sure it clicks on (you can hear it) when the key is turned on.
View attachment 23659Unplug the Spout Connector to see if it runs better. If it does, pop the cover off the PCM. Leaking caps are common on those older units.
If not, give us more info on the symptoms. Is it missing spark, injector pullse, both?
Joe
Check the PCM. Don't replace it without popping the cover off first!!! There are a couple of other things that can cause it to run better with no Spout. Check this one first. If you look closely, you can see 2 leaky caps in that pic.
Next would be a magnetized distributor shaft...but check the PCM first.
Joe
Ignition module
Your fuel pressure is correct at 35-40 psi.
You said it started on ether,does it stay running on its own after it started?
If so....... I have run into a lot of old Fords that the coolant temp sensor was skewed and would have a hard time starting. Unplug it and it will go full cold and should fire up
Also,that engine doesn’t have a crank sensor
How long you had it or was it F.O.R.D. and you just took it home.....In or close to Alamance County. I have an 88 F-150 that has got me stumped.
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How long you had it or was it F.O.R.D. and you just took it home.....