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1994.5 - 1997 7.3L Power Stroke Diesel  

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Old May 4, 2010 | 10:13 AM
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refresh my memory
i just hooked up my boost gauge, and it does not move. i un hooked the line going to the map sensor and i dont feel anything, also no change in the way the engine runs with it disconnected. does this mean my map sensor is working fine or is the line plugged?
 
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Old May 4, 2010 | 10:39 AM
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You won't make boost at idle. Blow the MAP line out with an air compressor to be sure (don't exceed whatever pressure your gauge is rated for) and take it for a spin.
 
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Old May 4, 2010 | 10:46 AM
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Unplug the MAP electrical connector. If truck runs better then hose could be plugged. At idle there is little to no boost. Just remove the hose and blow through one end. Make sure that little hole where the hose connects at the engine is not plugged up too.
 
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Old May 4, 2010 | 10:54 AM
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ok thanks. BTW this is my 500th post
 
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Old May 4, 2010 | 11:28 AM
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let me know what you make for boost when you get that thing going, curious to see if my trucks effed or about average lol
 
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Old May 4, 2010 | 12:07 PM
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Originally Posted by rideracelivemx7
let me know what you make for boost when you get that thing going, curious to see if my trucks effed or about average lol
FYI with the mods I have listed (which is about like George) I max at 33 lbs.
 
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Old May 4, 2010 | 12:08 PM
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i just went on a ride. couldnt get past 12psi
 
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Old May 4, 2010 | 12:14 PM
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You must have a big boost leak somewhere. Mine made 33 before the 17* hpop so it basically would be just like yours.
 
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Old May 4, 2010 | 12:17 PM
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i am sure i do. i know i have a leaking up pipe, where else iam not sure
 
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Old May 4, 2010 | 12:21 PM
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Travis just posted a boost leak detector. Ill try to find it.

Here.. https://www.ford-trucks.com/forums/9...ctor-pics.html
 
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