Help with 7.3L IDI starting.
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Freshman User
Joined: Jul 2013
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Help with 7.3L IDI starting.
Hello I have a 1989 F250 7.3L IDI Diesel.
We have had issues with the truck starting for some time. We don't use it that much but less and less due to its starting problems. You need to crank the **** out of it to get it to start. We were doing it so much, that I needed to replace the starter and starter relay. Both burned out. I think it is a fuel supply issue, as if you give it a shot of either it fires up much quicker. Once started it runs great. I think it is not holding fuel pressure when it gets shut down and has to crank over to be primed every time.
Let me know what you guys think.
Thanks,
We have had issues with the truck starting for some time. We don't use it that much but less and less due to its starting problems. You need to crank the **** out of it to get it to start. We were doing it so much, that I needed to replace the starter and starter relay. Both burned out. I think it is a fuel supply issue, as if you give it a shot of either it fires up much quicker. Once started it runs great. I think it is not holding fuel pressure when it gets shut down and has to crank over to be primed every time.
Let me know what you guys think.
Thanks,
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
After it sits a while, remove the fuel filter and see if its full to the top. If not you have an air leak. Look for damp areas around the injector return lines, at the fuel heater etc.
How about the glow pugs? Does the wts light come on for 10 or so seconds? Are you getting white smokenfrom the tailpipe while cranking?
How about the glow pugs? Does the wts light come on for 10 or so seconds? Are you getting white smokenfrom the tailpipe while cranking?
Laughing Gas
Joined: Mar 2016
Posts: 1,105
Likes: 78
Yes and until you fix the air intrusion issue prime the fuel ..
Crank 5seconds .. depress shreader valve on filter base ..
Crank 5seconds .. depress shreader valve on filter base ..
X4or5
Same procedure if u run a tank outa fuel. ..
Disconnect the small wire D side of glo plug relay to use ether safely .. i only start off ether .. but never mix glow plugs and ether at the same time ..
Crank 5seconds .. depress shreader valve on filter base ..
Crank 5seconds .. depress shreader valve on filter base ..
X4or5
Same procedure if u run a tank outa fuel. ..
Disconnect the small wire D side of glo plug relay to use ether safely .. i only start off ether .. but never mix glow plugs and ether at the same time ..
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