fuel problems
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New User
Joined: Oct 2006
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fuel problems
Hi this is my first thread so i will say hi to everyone and whot a great owners club this is.My problem is that i have a 88 f250 that wont start.The engine turns over but i dont get any fuel from the injectors.I have used a funnel and put fuel directly into theinjector pump and still no fuel out.Do we have problems with the stop solonoid or are the injector pumps prone to failure.
Thanks again paul
Thanks again paul
Freshman User
Joined: Aug 2006
Posts: 43
Likes: 0
From: Lilburn, GA
I don't know if Fords are prone to this and you didn't say anything to make me think it, but On the old Mercedes/Thermo-King Diesels, if air got into the lines we often had to bleed it out to get them started and once started we had to bleed them at the injectors.
Ford seems to have solved some of this problem. I didn't change tanks soon enough one day and got an air bubble in th fuel line. I had to bleed it out at the Schrader valve on the fuel filter, but it ran fine with no further bleeding.
This is my third post, although I've been watching for some time now. Look for some excellent guidance to come your way.
Good luck,
Lawton
Ford seems to have solved some of this problem. I didn't change tanks soon enough one day and got an air bubble in th fuel line. I had to bleed it out at the Schrader valve on the fuel filter, but it ran fine with no further bleeding.
This is my third post, although I've been watching for some time now. Look for some excellent guidance to come your way.
Good luck,
Lawton
Elder User
Joined: Sep 2006
Posts: 561
Likes: 0
From: Edmonton, Alberta Canada
One thing to keep in mind is that you should NEVER let your fuel tanks completely empty, cause that will cause air in the lines. If you're running dual fuel tanks in your truck, you should keep your secondary tank with at least a 1/4 tank of fuel in it just to make sure.
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Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
I would ask HOW you filled the IP with fuel..............did you remove the top of the IP. If you did "DO NOT ATTEMPT A START" until we sort out if you replaced the top right.
Engine runaway to destruction can happen if done wrong...............
Engine runaway to destruction can happen if done wrong...............
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Lead Driver
Joined: Jan 2005
Posts: 7,782
Likes: 221
From: Huntington Indiana
Look between the injectors at the rubber lines. If they are painted gray - they are original. replace as they are leaking air into the system letting the fuel drain back towards the fuel tank. Air will get into the system but leak fuel out. This is a classic problem which most of us has had to deal with. Mine was about 4 years ago. Also check the fuel lines from the tank. If badly corroded they will leak air in also. I just went thru this a few months ago. Finally found a bad spot under a hold down clip for the fuel line on the frame.
Freshman User
Joined: Aug 2006
Posts: 43
Likes: 0
From: Lilburn, GA
The Ford service manual(factory) had very little to say about bleeding procedures. The basic process is to open the downstream end of the fuel lines about 1/2 turn starting at the supply pump. As each successive fitting stops bubbling and runs clear, tighten the fittting and go down the line to the next one. When you get to the eight injector lines, it may help to start at the pump and then, finally, the injector inlet. If the engine starts and runs rough, try bleeding each injector individually with the engine idling. This is sort of a generic procedure. I've only had my IDI since abiut July and haven't had to do much in this area.
Ford says to purge at the injectors if necessary so maybe their sysem is not as prone to air entrainmemt as the older systems I dealt with. I know that if I had sent an air bubble into the system like I did by running it low (out) on fuel, it would have required a full system purge on the older engines.
Ford says to purge at the injectors if necessary so maybe their sysem is not as prone to air entrainmemt as the older systems I dealt with. I know that if I had sent an air bubble into the system like I did by running it low (out) on fuel, it would have required a full system purge on the older engines.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Do you have pressure to the IP while cranking the engine?
Also do not crank the engine for more than 20 seconds.
After 20 seconds of cranking you must let the starter cool for 2 minutes before the next 20 seconds of cranking.
Have someone hold in the schrader valve on the fuel filter while cranking the engine till you get fuel there.
Then loosen two or three injector lines at the injectors, be careful not to kink the lines.
When you get fuel at the injectors tighten the lines back up.
It should start.
Listen to PLC7.3 about the IP and runaway engine if you removed the top of the IP.
Also do not crank the engine for more than 20 seconds.
After 20 seconds of cranking you must let the starter cool for 2 minutes before the next 20 seconds of cranking.
Have someone hold in the schrader valve on the fuel filter while cranking the engine till you get fuel there.
Then loosen two or three injector lines at the injectors, be careful not to kink the lines.
When you get fuel at the injectors tighten the lines back up.
It should start.
Listen to PLC7.3 about the IP and runaway engine if you removed the top of the IP.
