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1994.5 - 1997 7.3L Power Stroke Diesel  

Engine's getting worse

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Old Jul 1, 2012 | 08:15 AM
  #1  
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From: ontario canada
Engine's getting worse

hi
my truck struggles to rev up, doesn't want to go past 2500, has blu-ish white smoke while struggling to rev, oil psi reads 600 psi at idle and 2200 psi at 2000 rpms.
i have no access to a scanner.
what could this be?
ipr gone bad?
 
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Old Jul 1, 2012 | 08:47 AM
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Bad injector o_rings?
 
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Old Jul 1, 2012 | 12:52 PM
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Originally Posted by farmert
Bad injector o_rings?
X2^^

How many miles on the truck and has it had any injector work?
 
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Old Jul 2, 2012 | 05:21 AM
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i had changed the o-rings recently, the truck itself has 350000km's and i think the injectors are stock.
 
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Old Jul 2, 2012 | 05:41 AM
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loooking at glovemeister's post seems close to what's happening to me.
i did have the fuel regulator off to clean the mud out of it, two of three round magnet looking things(elements?) were sitting in the bottom of the bowl and one was broken into pieces, but the fuel comes out clean now.
could it be that those pieces worked there way into the fuel pump?
 
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Old Jul 2, 2012 | 06:12 AM
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What kind of injector o-rings did you use when you replaced them?
 
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Old Jul 2, 2012 | 04:17 PM
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i got a set from diesel orings.
gonna take off the valve covers and look into the wiring soon. btw, what kind of signs should i look for if maybe my coolants leaking in?
i just need a solid direction to look at, should i start with the fuel system or check the injectors?
 
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Old Jul 3, 2012 | 05:56 AM
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What makes you suspect that you're losing coolant?
 
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Old Jul 3, 2012 | 06:03 AM
  #9  
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none really just fearing the worst about the bluish white smoke.
looked at the passenger side wiring and there really oily. gonna wait till after work to open the other valve cover.
 
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Old Jul 3, 2012 | 06:14 AM
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Does the truck idle smooth? Does it rev fine up to 2500RPM and then stumble, but then go past that speed, or does it struggle to get to 2500 RPM and refuse to go past that?
 
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Old Jul 4, 2012 | 05:08 AM
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From: ontario canada
all the above, lol.
it idles ok, bit of a stumble then it evens out, i tried making it go past 2500 and it almost did but refused and mostly it struggles and refuses to go past 2500. checked the wiring on the driver side and same as other side, oily but ok physically. pulled out the screen for the regulator and it wasn't that dirty but this dirt is still showing up in the fuel bowl. oh and my y-intake boost boots came in from riff raff, my old ones look so chewed up compared to those.
 
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Old Jul 6, 2012 | 01:43 PM
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Originally Posted by 444fan
loooking at glovemeister's post seems close to what's happening to me.
i did have the fuel regulator off to clean the mud out of it, two of three round magnet looking things(elements?) were sitting in the bottom of the bowl and one was broken into pieces, but the fuel comes out clean now.
could it be that those pieces worked there way into the fuel pump?
Those little "round magnet looking things sitting in the bottom of the bowl" are probably the non-conductive insulators for the resistance wire on the fuel bowl fuel heater thats heats up the fuel for cold starts. Had the same thing happen on my 97.

With the non-conductive insulators not holding the resistance wire in place on the mounting plate in bottom of the bowl, it will at some point touch mounting plate or bowl and short to ground blowing fuse then your truck will not start without first upluging the heater and replacing the fuse. Better replace the fuel bowl heater before it shorts to ground or if not needed just unplug it at fuel bowl connection on the drivers side of fuel bowl, then tape and tie up the connector end of the power supply wire.

Although this probably has nothing to do with your OP it will become a problem when it shorts to ground. I replaced mine with a new style from Oreillys w/limited lifetime warr for around $65.00.

Good luck, hope you get your other problem sorted out.
 
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Old Jul 7, 2012 | 06:55 AM
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thanks for the info gscpsd!
i was looking at photos of the fuel bowl and noticed that i don't think i have the wire for the element. ? . one more thing to replace for the "basketcase" that is mine, lol.
 
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Old Jul 22, 2012 | 09:41 AM
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so......
i got a mech. core only ipr from dieselsite, changed it yesterday, finished up tightening everything this morning, charged the batteries, cranked it, nothing just cranking, stopped and filled the reservoir, cranked for about 30 secs and still no firing or even smoke coming out the tailpipe. tried again cranking and no fire and no smoke, fuel bowl is filling up. oh and the oil level is at the full mark.
anyone wanting to buy a basket case powerstroke?
 
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Old Jul 22, 2012 | 09:53 AM
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Know anyone with another 7.3 powerstroke you could try their idm from? Or put yours in theirs? If injectors aren't firing, I'd try one if I had access to one means you replaced the ipr already.

I don't suppose you cranked it over and watched oil spill out of the spouts of the injectors when the vc's were off did you?
 
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