24 Valve Engine and Drivetrain Discuss the 24 Valve engine and drivetrain here. No non-drivetrain discussions please. NO HIGH PERFORMANCE DISCUSSION!

Why Now Help Me out! vp44

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Old Feb 17, 2008 | 04:16 PM
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BigD1's Avatar
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From: Idaho Falls ID
Exclamation Why Now Help Me out! vp44

new to the site im a member of the idaho bombers forum and this site really could use the help! Well 2 night ago i installed an edge juice w/ attitude. truck fired right up. drove it around for a couple miles to warm it up before i started playin with the chip i started from a stop put it on power level 2 and easily excelerated it was buckin a little kinda thought clutch cuz it prety well shot. came to another stop and put it on power level 3 and got on er pretty good it started buckin really bad so i back out of it quick it died for a sec. then reved up then quit i rolled to a stop and now she wont start at all it does crank over but wont fire. i did some reserch and today i tried some things. first i completly unhooked the chip still nothin. checked lp pressure still very good. then started to undo the injection lines off the back of the Ip and the three i undid seem to have very good presure shootin out of em! then i also undid the return line on the IP and a slight amount of fuel came out. and also the only codes im getting is a 0645 and a 1693 which i had both those codes long before the chip. Any help im nervous its the IP but where its shootin quite a bit a fuel out of it i,m not sure! Any ideas?
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Old Feb 17, 2008 | 05:46 PM
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I'm not sure but it sounds like maybe you're sucking air in somewhere.
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Old Feb 17, 2008 | 09:53 PM
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Yeah, when you get on it and off of it quickly like that you can airbound the system. Gotta bleed it real good and it'll be OK.
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Old Feb 17, 2008 | 10:06 PM
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Yup, sounds like you vac. locked the injector lines. My truck does it regularly when you get off the throttle quickly after a hard run. Crack 3 fuel lines at the head, crank the engine over a bit(5 seconds) then tighten the lines back up and she should fire right up.
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Old Feb 17, 2008 | 11:04 PM
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i,ll give that a try tommorow and let ya know how it goes thanks for the help
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Old Feb 18, 2008 | 08:40 PM
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we tried all fuel lines at the head and it didnt spit any fuel so we think the pump is done burned up!!!
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Old Feb 18, 2008 | 09:17 PM
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From: North Carolina or Kentucky. Take your pick
Did you have fuel at pump fuel fitting while in bump start mode?
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Old Feb 19, 2008 | 03:29 PM
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From: Longmont, CO
If the pump was old and tired, the extra kick from the chip might have done it in.
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