I have a 96 f350 power stroke with a dump bed it has a oil leak in the oil pan on the pass side where there is a line going into it is there any way I can tighten the big nut up . It also has no power it is stock but for the tymar and no kitty or muffler , before i replaced the filter when I got on the gas it would roll smoke now there is still smoke but not as much,when pulling a hill with my lawn trailer I have to down shift to maintain my speed sometimes i would like to get this thing running good all help would be great,also where is the map sensor at thanks sorry about the long post . Shawn Reardon

 

Map sensor is on the firewall, passenger side next to the air conditioner - heater box. It has a electrical connection (3 wire) and a hose that goes to the engine intake.

 

You can try to tighten that nut where the dip stick goes in but it might be stripped. Not a fun repair from what I hear. What ever you do don't let the fitting fall into the oil pan!

As for power when was the oil changed last? fuel filter? air filter?

 

Its under the truck where the drain bolt is , as far as changing filters about 2 thousand ago

 

Have you ever cleaned filter screens in your fuel tank? My truck would blow smoke, loose power and would not respond to the throttle. After a while it would just quit. Would start up, drive for few miles and dies. Was not getting enough fuel. Traced the problem to the fuel tank pick up line. There are two screens in the tank and they got plugged.

 

where are they located I have never cleaned it the truck sit about a year before I bought it I have had diesels in the past and when I changed the oil it was as nasty as I have ever seen oil . where do you clean the fuel return screen thanks for all the help Shawn

 

Those are not fuel return screens, they are screens to clean large particles out of fuel before it goes to your fuel pump and they are located in the fuel tank. You have to drop the tank to get to them. It is white plastic item that you have to take a part to remove and clean/replace those screens. If I new how to post pictures, I could probably find some pictures of what it looks like.
Follow the link to this e-bay item:
eBay Motors: 00 01 02 03 Ford Excursion Fuel Pump Assembly DIESEL (item 360043430477 end time May-15-08 13:55:01 PDT)

 

HAve you checked the fuel pressure?

How many miles have you driven it since it sat for a year? Old stale diesel will form algae...plugging the fuel filter. Take a look in the fuel filter housing, should just be clean fuel in there....and while you are at it, clean the FPR screen too. It's sandwiched between the FPR and filter housing but can be cleaned from inside the FF housing after the filter is removed. A plugged FPR screen will not allow the air in the fuel to return to the tanks.

 

I have drove it about 3 thousand getting ready to change the filters and the oil, and the fuel filter will try these things it seems to run ok if not under a load it runs best win the rpms are around 2200 and up seems to smooth out if you try to run 55 witch is around 1900-2000 rpms its seems almost like it has a miss if its under a load like pulling a steep hill or hauling my scag around it will still blow some black smoke when you really romp on it thanks for all the help guys I read this forum daily and it helps me alot thanks again Shawn

 

It sounds like it's running out of fuel if i understand you correct. Yep, new FF might just do it. Good luck and let us know if you get it fixed.

 

when i bought the truck i replaced the FF with no diff.

 

guys thanks for all the help I think I have gotten both fixed the oil leak just needed the nut tightened and I found some wires that were burned into on the valve cover and it seems to have fixed it I just had no time to look at it closely