6.9L & 7.3L Performance Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels Related to Performance and Longevity

New ip now loss of power

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  #1  
Old 07-30-2011, 10:32 PM
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Default New ip now loss of power

So I replaced my ip last night and the install went smooth. But after driving it I noticed a extreme loss of power, but no smoke, not white, blue or black. I attempted to turn it up but the allen nut almost feels siezed, im not sure what else it could be so im turning it over to you guys for help im lost. Thanks
 
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Old 07-31-2011, 12:18 AM
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timing could be off. also make sure you are getting full throttle with the pedal.
 
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Old 07-31-2011, 11:26 PM
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I am gettin full throttle with the pedal, feels like a fuel issue, once I get any boost it feels like im hauling a big parachute behind me. The max fuel screw feels stuck so im going to get a 5/32 allen head that fits.a socket and see if I can turn it either wat ( up or down). Now I have heard of another fuel screw, not the torque screw. One thats under the center fuel line on the back of the pump? I looked at my old pump and it does have a allen head in there. Does this.have anythimg to do with fuel adjustments?
 
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Old 08-01-2011, 04:15 PM
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dont touch that one. timing can still be a big part. need to get it timed with a meter. not by ear.
 
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Old 08-01-2011, 08:08 PM
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What exactly is that screw for? Just out of curiousity. Could I dynamic time it?
Or do I need a timing light?
 
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Old 08-02-2011, 08:37 PM
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timing needs to be precise. .1 degree can change alot. they should be timed to 8.5 degrees. if you cant find a place to time it, do a search for ferret timing meter. it hooks up to a normal timing light. but the timing light needs to have the degree wheel to change it.

that screw is for the internal fuel pump. the DB2 can pull fuel itself, but will burn out if it does it alot. this is the reason for the lift pump.
 
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Old 09-12-2011, 02:08 PM
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What size clamp is needed for the 92 7.3 and 86 6.9 idi.( i have both).
Will this work on a 6.9 without one of those timing fittings on the number one injector? Or would that have to be added to use one of these?
 
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Old 09-12-2011, 06:24 PM
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the line size is 1/4 inch. both the 6.9 and 7.3 have same size lines. just clean the paint off the lines and put the clamp around it.

also fyi, if you cant get a good reading from number 1 cyl, try number 4. it is 360* after cyl 1 fires, so wil be the same readings.
 
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Old 09-12-2011, 09:10 PM
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Thanks! I asked the local diesel shop (the only one that will still work on a diesel that dosen't require a programmer) about timing and they just "set it by ear"! And yes, they charge to do that!
 
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