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7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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  #1  
Old 10-25-2010, 08:19 PM
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not starting

heres the story..........any help is appreciated....
Looking at getting a 90 f350 cc dually 7.3 idi, If I can get it to start. I swapped batteries out of my truck (96 f250 7.3di) it spun over fine, but no start. I had the owner spin the engine over while i checked for fuel at the shrader valve at the fuel filter....has fuel. I didnt crack an injector line to check there... I sprayed some either on a rag, set it on the intake (no breather installed) and it cought the rag on fire, as if a carb was popping back. The rag thing has got me stumped, never figured it would pop back like it did....any suggestions n why? There was no smoke at all from the exhaust when the engine was spinning over. The truck has sat for about a year...per the owner...
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  #2  
Old 10-25-2010, 08:49 PM
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Any smoke? is there even sputter or anything? seems like the timing slipped on it or something?
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Old 10-25-2010, 09:07 PM
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Like in the PM.

First thing, FSV. If no click, there's your problem.

If it clicks, and you have fuel at the shraeder, loosen injector lines and bleed. If by some odd chance it wont bleed, but you have fuel at teh shraeder, could mean your IP is beyond toast.

Dont use ether, if anything just plug it in for a little bit if you can, otherwise the fire was due to functioning glow plugs. The glow plug setup on a truck like that works so that if the WTS light comes on for 8 or so seconds, you are good to go. As glow plugs burn it, it will stay on for shorter amounts of time. If you turn the key and it goes right to flicking on and off, your glow plugs are shot. But you had ether explosion, so your glow plugs are fine.
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Old 10-25-2010, 09:11 PM
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Ok not to hijack, whats a FSV or an IP? im interested in an IDI and wanna soak up some info
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  #5  
Old 10-25-2010, 09:15 PM
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ip is injector pump which is located in the valley on the front end of the engine. the fsv is fuel selector valve.
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  #6  
Old 10-25-2010, 09:17 PM
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Thank you Jarrod. Suppose this is your area to shine huh? lol
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  #7  
Old 10-25-2010, 09:18 PM
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ive worked on idis since we have one but no expert.
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Old 10-25-2010, 09:19 PM
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Well im outta my league on them, But they seem like a good tinker toy
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  #9  
Old 10-25-2010, 09:22 PM
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for tsin a idi, with no electronics, its somewhat easier. but slowwwwww
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  #10  
Old 10-25-2010, 09:25 PM
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eh slow can be dealt with. You can make slow fast with the right gears and whatnot. Either way i might put one in my bronco? seems like an easy swap
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