1995 F250 Powerstroke 7.3 Diesel Won't Start

Gotta Be A Powerstroke · #1 Nov 28, 2007, 03:40 PM

1995 F250 Powerstroke 7.3 Diesel
Will not start and have done the following:

All new glow plugs, valve cover gaskets and glow plug leads.
New fuel filter and fuel pump, new crank sensor.
High Pressure Oil Pump exchanged with known used good pump.
Bled fuel system - NO water present.
Replaced injector drive module and PCM (preflashed) calibration code F6TF-AYE.
Replaced low pressure oil pump.
New glow plug celenoid and changed all fuses.
New oil filter, oil and new anti-freeze.

On initial scan there was no link between PCM and data port. Replaced PCM and achieved link up. Scanned PCM with auto x-ray 2500 - all updated software.
NO codes show. NO historical codes.

Shows oil pressure middle of normal on gauge.
42 PSI fuel pressure.
Plenty of engine oil in high pressure oil reservoir and injector oil gallies.
Will turn over but will not start.

Any suggestions/ideas?
I'll try to answer any questions and if I forgot some information please let me know.
I am still very new to this. Thanks, Donna

Gotta Be A Powerstroke · Dec 1, 2007, 05:30 PM

Thank you txgreasemonkey - Just wanted to update and say that I have passed this information on to my mechanic and am waiting to hear from him. I will post again as soon as I hear something.

Gotta Be A Powerstroke · Dec 4, 2007, 06:44 PM

Quote:

Originally Posted by txgreasemonkey

Thoughts:

. Clean battery terminals and cable connections. Place batteries on charger and ensure they are fully charged. F250s draw a lot of amperage in cold weather.

. Check all under-hood and under-dash fuses with a test light or multimeter. Here's how:

http://www.askmehelpdesk.com/cars-tr...tml#post252145

When you replaced fuses, are you sure they were replaced in the correct slots? There's the potential for major problems, if they were not.

. Even though the glow plugs were replaced, have you checked that they operate properly.

. Do you know that the new PCM is good?

The battery cables and connections are all clean. He charges the batteries before trying to start it to make sure they are always up.

Said he has checked all the fuses and they are in the correct slots.

The PCM is good and he checked all the glow plugs to be sure they were working properly.

He did get it to start with some kerosene but it wouldn't continue to run once he stopped spraying it in the turbo (?) or where ever you put it. Sorry - not sure on that part.

What else can we do?

Gotta Be A Powerstroke · Dec 4, 2007, 07:29 PM

Quote:

Originally Posted by txgreasemonkey

Check the fuel injectors. Take the valve cover off and look at the exhaust part of the injector when it is running. Each time the injector fires, you should see oil exhausting from it. If you see oil coming out, then the injector is good. When replacing a bad injector, take the glow plug out and crank the engine to get any oil out of the cylinder. If you don't, you could hydro-lock and bend a rod.

Does the engine have to be running to check this? If so, there is no way for him to check it.
Maybe I am misunderstanding what you mean, please tell me if I am. I wish my mechanic had a computer - ha ha. Then you wouldn't have to put up with a woman trying to understand all of this. I am trying though..... and I sure appreciate all the help.

Also, my husband just informed me that when the mechanic got it to start with kerosene it was a couple of months ago and it will not start now at all.

Gotta Be A Powerstroke · Dec 4, 2007, 08:10 PM

Quote:

Originally Posted by txgreasemonkey

Yes. It should make sense to your mechanic. I suspect fuel and/or an injector problem.

Okay, I printed out this info and will pass it on to him tomorrow.

Any chance you can tell me something about the 2 oil pressure switches/sensors in the HPOP oil galley? My mechanic has asked me to find some information on these and I can't find out much. He has talked to several Ford Diesel mechanics who don't seem to know anything about them or that they are even there. There is nothing about them in the manuals that he has either. He can see them with his own eyes though.... ha ha.

THANK YOU ! You are much appreciated.

)

Gotta Be A Powerstroke · Dec 11, 2007, 09:59 PM

Check the fuel injectors. Take the valve cover off and look at the exhaust part of the injector when it is running.

Quote:

Originally Posted by txgreasemonkey

Yes. It should make sense to your mechanic. I suspect fuel and/or an injector problem.

Well, because the truck will not start he is not able to check this.

He has went over all the schematics on the truck and can find no problems.
He took out the new cam sensor and exchanged it for another new one just in case, but it still will not start.

Next step is to load it on a trailer and take it to a ford garage if no one has any other suggestions or ideas.

Gotta Be A Powerstroke · Jan 12, 2008, 07:50 PM

UPDATE:

We made an appt. with Ford to hook it up to the machine and try to figure this out once and for all. Our mechanic knew we were going to come pick it up the next day to put it on a trailer and take it. He unhooked the batteries, put the PCM back in the holder on the firewall, hooked the batteries back up and tried it 'one more time' and it STARTED.

None of us still know exactly what the problem was. We wondered if it had something to do with the PCM not being mounted to the firewall but the mechanic said it wouldn't matter. (??) Maybe it does matter?

But, 'she' is running perfectly and boy is it great to have the ole Powerstroke back again. (Pretty tired of driving that gas eater Chevy that gets 7 miles to the gallon and has no power)

Just wanted to thank everyone for their help and suggestions and I hope somehow this thread will help someone else down the road. Thanks again! Donna