7.3 idi issues need help

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Jul 9, 2017 | 08:07 PM

chakes

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4wd Low

Joined: Apr 2011

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7.3 idi issues need help

I just bought a 91 f250 4x4 it has the 7.3 turbo diesel in it. I can start it and it will idle fine. But driving down the road it has died on me multiple times. What could be the issue? Any comments would be appreciated. It seems to do it at higher rpm. If that helps.

Thanks

Jul 9, 2017 | 10:31 PM

wtroger

Cargo Master

Joined: May 2001

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Lack of fuel or air.

Jul 10, 2017 | 05:52 AM

chakes

Thread Starter

4wd Low

Joined: Apr 2011

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Quote:

Originally Posted by wtroger

Lack of fuel or air.

It doesn't do it all the time. Drove it home about 30 minute drive and it was fine. Tried to take off some garbage the other day ten minutes down the raid and it died four times. What would you suggest new fuel pump fuel filter and air filter

Jul 10, 2017 | 06:08 AM

jayro88

Fleet Mechanic

Joined: Oct 2012

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Quote:

Originally Posted by chakes

Fuel filter and air filter for sure. The fuel pump is inexpensive and easy to change as well.

How much fuel was in the tank when it died? Could have a broken pickup

Jul 10, 2017 | 09:33 AM

chakes

Thread Starter

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Joined: Apr 2011

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Quote:

Originally Posted by jayro88

Fuel filter and air filter for sure. The fuel pump is inexpensive and easy to change as well.

How much fuel was in the tank when it died? Could have a broken pickup

It was showing up between a quarter and half I will try to get a new fuel pump filter and air filter and see what happens.

Thanks

Jul 10, 2017 | 09:45 AM

jayro88

Fleet Mechanic

Joined: Oct 2012

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Quote:

Originally Posted by chakes

It was showing up between a quarter and half I will try to get a new fuel pump filter and air filter and see what happens.

Thanks

See if it is repeatable at that fuel level. These idi's have issues with there factory fuel puckups coming apart over time which means they cant pull fuel once it gets to about 1/4 of a tank. If it is repeatable and goes away when fuel is added, then fix the pick up. Basically, drop the tank and put an extension on the pickup. There are mutliple threads on this procedure. I had to do this on both tanks in mine.

A new fuel filter and air filter is always a good idea, but you may not need a fuel pump. I wohld leave it until u know what it is. Many delete the mechanical pump and install an electeic in its place. That is what i did.

Jul 10, 2017 | 09:22 PM

chakes

Thread Starter

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Joined: Apr 2011

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Quote:

Originally Posted by jayro88

Im going to try a new fuel and air filter first don't know that it would be the pick up because it seems to to it on both tanks. Would that not just effect one tank (unless they are both bad of course)