93 Ford

Hello all,

I have a 93 F150 with an inline 6 that hasn't been running in a couple months. It would just cut off while I was on the road and only started back up after cranking it awhile. Took it to a shop in my area and they said the fuel pump went and it was $1000 to fix so I just took it home and its sat for 5 months.

In the past couple of weekends I dropped the tank, replaced the pump, tank and fuel filter but it would not run after that. Figured maybe the plugs were fouled up and changed those but the same results. It cranks good but just doesn't start.

I'm starting to run out of ideas on what could be wrong with it... So any input from you guys would be much appreciated!

Thanks,

Dan

techrep

iTrader: (1)

Have you cleaned the throttle body ... checked for fuel pressure on the rail ?? can you hear the fuel pump run when you turn the key ??

BLDTruth

Yep need to listen for the fuel pump when you turn the key to on with the engine off. If no sound then that is your problem.

If you hear the fuel pump priming then you need to test for spark to determine if it is electrical or fuel related.

If you have spark then you need to test fuel pressure, and the only way to do that is to get gauges. Some auto shops loan them out.

Randomly cutting out on the road sounds similar to a problem I had awhile back which required replacement of the distributor. Spent a couple hundred dollars on replacement parts fixing stuff that wasn't broke until I got serious about diagnosing it.

93 Ford

Have not cleaned the throttle body or checked the fuel pressure. I had my brother under the truck when I turned it "on" and he said the pump made a noise and he felt vibrations in the fuel line.

I replaced the plugs but didn't think to check to see if they were getting spark. I will check for that first then look to get my hands on a pressure gauge. Is there a connection I hook into on the fuel rail and if so where is that located?

Thanks,

Dan

techrep

iTrader: (1)

there's a port on top of the fuel rail the gauges will screw into..

93 Ford

Awesome, thanks guys. I'll try to get this done over the weekend and will post my results.

Thanks,

Dan

techrep

iTrader: (1)

Yep..

93 Ford

Ok so I plugged one of those spark plug checker lights into the first 2 cyl's and I got no light so it looks like my problem is there. Should I start looking at the distributor cap or is there any way to test to see if that is bad?

Thanks,

Dan

techrep

iTrader: (1)

just replace the cap/rotor and plug wires... normal tune-up stuff anyhow...go from there.

BLDTruth

If you don't have spark to your plugs then I would be looking at the cap and rotor first (check for major corrosion). Also pull the wire to the ignition coil and clean up the connector on the coil real well.

Based on what you described though, I still think it is the Pick-up coil inside of the distributor. A part that is most easily replaced by just replacing the distributor. I picked one up from a JY for $40. It is a menace to diagnose because occasionally it will just decide to work again and you think you have fixed the problem, only to have it cut out on you while driving again.