97 7.3 won't start - Diesel Bombers

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97 7.3 won't start

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Old 11-18-2017, 09:15 PM
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Default 97 7.3 won't start

My 97 7.3 will crank, but won't start. Two brand new batteries. New fuel pump. New glow plugs and wiring harness under valve covers. Truck has been parked for a few months, but was running just fine before I parked it. While cranking, fuel pump fills fuel filter bowl up. Engine "WAIT TO START" light doesn't come on now. Tach doesn't move while cranking. No signs of firing off at all. Any ideas?
 
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Old 11-23-2017, 05:17 PM
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Plug it in for a couple hours and try again.

Check the hpop reservoir to make sure it has oil.

Unplug the ICP and see if it will start.

Its a bit of work, but plumbing in a hpop pressure gauge is a great diagnostic tool.
 
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Old 12-12-2017, 01:22 PM
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My 97 7.3 will crank, but won't start. Two brand new batteries. New fuel pump. New glow plugs and wiring harness under valve covers. Truck has been parked for a few months, but was running just fine before I parked it. While cranking, fuel pump fills fuel filter bowl up. Engine "WAIT TO START" light doesn't come on now. Tach doesn't move while cranking. No signs of firing off at all. Any ideas?
ECU was checked and functions properly
 
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Old 12-12-2017, 01:41 PM
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Originally Posted by jfleig View Post
ECU was checked and functions properly
Originally Posted by u2slow View Post
Plug it in for a couple hours and try again.

Check the hpop reservoir to make sure it has oil.

Unplug the ICP and see if it will start.

Its a bit of work, but plumbing in a hpop pressure gauge is a great diagnostic tool.
^ Which of these did you try?
 
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Old 12-27-2017, 03:39 PM
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Did u ever figure out what was wrong im having the same problem out of my 97
 
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Old 01-01-2018, 07:21 PM
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Yes, it turned out to be the fuel heater itself. It was somehow shorted (I think because of all the sediment at the bottom of the bowl), there for burning the #22 30amp fuse everytime I tried to start it. Pulled the heater, cleaned the bowl thoroughly, put the filter back in, filled the bowl back to the top, and started the engine. No problems since, except longer crank times since the fuel is now cold. Ordered new heater from Amazon, when it comes in, i will install it and see if that changes the crank times.
 
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