1994.5 - 1997 7.3L Power Stroke Diesel  

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Old 04-25-2008, 03:52 PM
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Question Any Ideas

Gotta problem,after truck sets even for 2-3days starts ok but within 1/2mile do the road starts losing power then white smoke rolls out exhaust.If I let off it dies keep pushing it, it will come out of it and be fine rest of the day.In december I replaced hpop and had fuel canister off and all necessary thing to make swap.I think it's leaking fuel out then getting air in system.I haven't removed lid on filter yet to see if low(tomorrow).I have seen some wet fuel under regulator thinking maybe time to rebiuld fpr.Any thoughts welcome.I haven't really investagated this problem yet just throwing it out.
 
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Old 04-25-2008, 03:56 PM
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mine had the hoses and the "pluged filter" sensor leaking might wanna check that
 
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Old 04-25-2008, 04:00 PM
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white smoke is raw fuel, what doe sthe truck do if you fire it up but dont drive it? do you have access to a fuel gague? i
 
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Old 04-25-2008, 04:40 PM
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The first time I noticed this it would start but died when I let it warm up (32*+/-), I do have a guage haven't hooked up yet to see if presure falls off,that's part of tomorrows schedule.The hose isn't long enough to try and drive it but hopefully with the help of my 14yr old apprentice I can get rpm up enough to consume fuel while I watch.I don't think transfer pump is bad as it runs fine after 1-2miles.
 
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Old 04-25-2008, 05:25 PM
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Originally Posted by fuelman
The first time I noticed this it would start but died when I let it warm up (32*+/-), I do have a guage haven't hooked up yet to see if presure falls off,that's part of tomorrows schedule.The hose isn't long enough to try and drive it but hopefully with the help of my 14yr old apprentice I can get rpm up enough to consume fuel while I watch.I don't think transfer pump is bad as it runs fine after 1-2miles.
Next time it wants to stall ,,,let it ,,& look in the HPOP res ,, see if its empty or low ....
 
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Old 04-25-2008, 06:31 PM
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White smoke:
Caused by unburned fuel passing through the engine. Some white smoke is normal on cold start-ups.
Excessive white smoke could be an indication of inoperative glow plugs, loose injectors, low compression from worn rings or bent connecting rods, or coolant leak into the cylinders--head gasket or injector well sleeves.

Blue/white smoke:
Caused by insufficient fuel or oil consumption. Normal when engine is cold or idling for extended periods.
Excessive smoke could be caused by air in the fuel, contaminated fuel, loose or plugged injectors, worn or leaking injector o-rings, thermostat stuck open, oil consumption, or plugged crankcase depression regulator valve. Also PCM inputs such as MAP or ICP sensors.

Inj torque is 120in lbs.

Note: The 80psi idle fuel pressure in your sig stands true?
Issue is on the 96 or the 97?
First i would remove the 10K mod.

Bill
 
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Old 04-25-2008, 07:04 PM
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It runs ok for the first 1/4 mile then starts to lose power.I hadn't thought of hpop but I would think that would also cause hard starting.It does seem to start normally,just getting under load after 1/4mile.It was fine until it sat for about 5weeks in february/march(maybe jealous of my civic).Then tried running in march and problem continued even on 75*day.I really think fuel but deffinetly due for oil change.This weekend...baby needs attention.
 
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Old 04-28-2008, 08:40 PM
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Well an update on the cause. I'm ashamed to admit it,but I will prefess this by saying the last five months have been very difficult considering many loses in my life.Well the problem was 7qts low on oil yes 7. I shall stand at the whippping post voluntary.
 
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Old 04-28-2008, 08:48 PM
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Ouch 7 quarts!! Your forgiven but it must never happen again! Still I have seen these trucks run when they are 9 quarts low. It was a SD that holds 15 rather than 14 quarts but still thats like 8 quarts low for us.
 
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Old 04-28-2008, 08:49 PM
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:-x19:-x19
 
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Old 04-28-2008, 08:59 PM
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Thanks Pastor Tj for the forgiveness,the truck ran fine once the oil got alittle more fluid.Yes,I will keep a closer watch on the oil.







Originally Posted by tjbeggs
Ouch 7 quarts!! Your forgiven but it must never happen again! Still I have seen these trucks run when they are 9 quarts low. It was a SD that holds 15 rather than 14 quarts but still thats like 8 quarts low for us.
 
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Old 04-28-2008, 09:20 PM
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Your in timeout for 7 minutes!!
 
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Old 04-28-2008, 09:46 PM
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Can I get up yet,Duck
 
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Old 04-28-2008, 10:47 PM
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Alright, but what have we learned? LOL
 
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Old 04-29-2008, 07:02 AM
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Lessons learned : don't be a dipstick,pull the dipstick and keep it oiled.....



Originally Posted by RubberDuck
Alright, but what have we learned? LOL
 


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