Hello all, first of all I want to say thanks to all that reply to questions and really in the faq section, as a new diesel owner this site really gave me a lot of knowledge about my truck, so thanks.

Now to my question, I'm a partner in a farming operation, and when we got a new truck I got the previous one, kinda a hand-me-down, but we got an 04 F-250 6.0 Powerstroke Diesel Lariat with 40,000 miles on it, the truck that I have now is an 04 F-250 6.0 Powerstroke Diesel with 140,000. Now I understand the with the added miles mine would be "tired" but when I drive the two trucks there is a significant differance in the power area. The only thing that I have done to the truck since I got it was change the oil and air filter. I guess the real question is what should be replaced, worked on, what is a good tune up to get the truck back to par???

Also, we use the truck a lot for hauling hay bales, parts, tractors, etc. Someone told me that it has to many miles on it to chip it, or put any mods on it. First I want to make sure the truck is running properly before doing such modifications, but what are some opinions on the proper order of modifying, exhaust first, chip, intake, injectors. I'm not looking for 600rwhp but with everything thats out there I'm begining to wonder if we are doing more harm that good with how much we use it and it is still stock. If that makes sense.

 

You say you have only changed the oil and air filter? Well son you are WAY overdue on fuel filters! Do that tomorrow and report back on how it runs. A tranny flush would not kill it either.......Good luck!

 

with that many miles I think the first thing you should do is studs and gauges.

 

Well about a month ago the truck was running like hell so we took it to the shop and from what I understood they replaced the fuel filters trying to get the truck to run correctly. See what happened was that when I drove down the road the truck would get to 2000 rpm and then top out, you could put it to the floor and from about half throttle to full throttle there was no response out of the engine. I don't remember what it was called that they replaced but he described it like the controller to one of those toy race tracks that clip together that you raced those little *** cars on with loops and all that crazy crap as a kid. But what he related it to was the controler has the same slide in it as the throttle and there was a bad spot in it. So I will check on the fuel filters and get back to you.

And could you elaborate on studs and gauges

 

These trucks are know to blow head gaskets due to inferior studs that ford put in. Over time the stretch and and loose tensile strength. The best replacement is the ARP head stud kit. Gauges are not necessary but a good addition in order to keep an eye essential functions like tranny temp, boost pressure, coolant temp, fuel pressure among the few. Leave your stock intake, it's good up to 500HP. I would also change all the fluids, oil, tranny, coolant.
Here a list of things to work on, not necessarily in this order:
EGR cooler delete
ARP head studs
CCV reroute
Coolant filter
Oil bypass filter
Here's something you would want to work on if you want real perfomance:
Exhaust
New injectors
FASS
Fuel Regulated Return
Fluidampner
External tranny filter
SCT tunes from Matt

I'm sure someone alse will chirp in and suggest something

 

sorry for stealin the thread, but does anyone know how much studs cost to have em put in?

 

Thanks for the info but some questions, remember i'm a newb

: EGR Cooler delete???

: CCV Reroute????

: Oil bypass filter???

Sorry for any inconvience but I don't get a lot of time to converse with other people on diesels during the day and they all have cummings anyways so they don't care about my truck, thats just their personality. So I really don't know much of anything about my truck. I have read through the owners book and been around them a lot but when it comes to working on the truck it was never mine so i always worked on my f 150, now this just seems like a whole nother ball game with diesel.

 

Have you changed both transmission filters, air filter, etc?? Stuck turbo veins will give loss of power

 

Update>>>>
First things first.....Changed both fuel filters and no change in power.

Now QUESTION.... When I removed the cap and filter on the engine when I looked in the orifice/container there was an o-ring sitting in there. I took it out and set it aside. It looks as if it were an o-ring that fell out of the inside of the filter that was in there previous to the one that I changed tonight. I looked on the inside of the new filter and the was one in there, also one in the old filter.....so because there was not a new one supplied in the box, I came to the conclusion that whoever changed the filters the last time was negligent, and did not look inside to make sure everything was ok. Am I correct or does that o-ring need to go in there somewhere?

Thanks

EGR is being cleaned tomorrow.

 

The o-ring goes on the cap. There is no such thing as to many miles, the motor is designed for 500K. the truck will fall apart before the motor gives up.

If you are running a proper tuner like Spartan you do not need head studs. Head studs were a problem with some of the older tuners before they understood how to make power safe.

 

About 1k for parts and about 2500 labor. Give Matt a call, he is not that far from you.

 

1k for studs!? does nasa make those? lol. no one should pay that. tippman, pm me if you plan on getting studs and want to know who to buy from.

 

I got that o-ring, this one was smaller, it must have fallen off of a previous filter.
Bosses wife forgot to get the gasket kit for the EGR so it will have to wait till Friday. Get back to the post then.

 

I was including all of the gaskets, parts, ect.