7.3 wont stay running - Ford Powerstroke Diesel Forum
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Old 03-06-2014, 12:35 PM
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7.3 wont stay running

ok guys I need some help I did a re ring job recently on my 96 7.3 and changed my rods I had a bent rod from a hydrolock (intake came off and i went thru water) and It will turn over good but no start. I give it a shot of ether and it fired up and ran for about 5min then bogged and died then wouldn't start I did that scenario about 3 times and it just wont stay running and sometimes it wont run wit either it fires but doesn't stay running I have changed ipr cps new batteries after the rering and it just wont run I live on a farm and te nearest shop wants 300$ just to scan it so idk what to do right now im about 3k into it already and she wont run its a little frustrating
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Old 03-06-2014, 01:51 PM
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If you're doing that level of engine work, you need your own scan/data tool. For not much more than that $300, you can get an old red brick Snap-On MT2500, or a beater laptop/netbook and throw AutoEnginuity on it.

Just to be sure, you did do a compression test after buttoning it up, right? Otherwise, you're chasing your tail.

The one direction you can look without a scan tool is fuel pressure/delivery, since it's purely mechanical upstream of the injectors. Make sure the fuel bowl is filling, and the fuel and filter look good. You can test the fuel pressure by putting a cheapo stick-type tire gauge on the schrader valve while someone cranks the engine with the key. Just for grins, have you tried it on both fuel tanks?
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