How do I change a thermostat on an 2004 F350?

SOURCE: HOW TO REPLACE THERMOSTAT

It should be located in a housing on top of the engine.

• You'll need a bucket.
• This is also a good time to do a coolant flush or replacement
  

1. Follow the hose from the top of your radiator to the engine. This is the thermostat housing.
2. Remove this hose from the engine and collect the fluid in the bucket.
3. Remove the (usually 2) bolts holding the housing to the engine.
4. The small round object inside is the thermostat. It's usually loose but if you have severe corrosion, you may have to pry it out with a screwdriver.
5. Replace the thermostat.
6. Re-install the housing and hose.
7. Top off your coolant with new fluid
8. Dispose of old fluid properly (This stuff is poisonous!)
   

SOURCE: bad thermostat on 2004 F350 Diesel 6.0

Drain the coolant out and remove the thermostat housing from the top of the engine - where the top radiator hose meets the domed cover on the top of the engine. Note how the thermostat is situated and replace the new one facing the same way. You will need to remove all of the old gasket material using a plastic scraper so you don't scar the metal and create a leak. Make sure the gasket pieces don't fall into the engine opening. (stuff an old rag in the hole). The parts store will tell you how to put the new gasket in and whether you should use RTV sealant or not. If you need RTV, use just a little. Put the gasket and thermostat in, put the housing over them and tighten the bolts by cinching one then the other until they begin to get tight. You are working with pot metal and aluminum so don't get too aggressive in making them tight. Replace the top hose if you disconnected it, refill with 50/50 coolant and antifreeze and run the engine to normal operating temp and look for leaks. If you find one, let the engine cool and try tightening the bolts a bit more. Make sure that the hose clamp is good and tight too.

J.D. Browning

• 2760 Answers
• Posted on Jul 08, 2009

SOURCE: replace fuel pump on 03 Ford F350 diesel

simple : obtain replacement pump from parts provider (no used stuff)

Now help me out here: thats the year they were bolted to the pass side front of engine
and not inside the tank right? (better go look to see for sure)

using a tube wrench unscrew the fuel lines (i use large wire nuts to temp block off fuel leakage)

with a 12 mm wrench undo the two side bolts holding the pump to block

wiggle pump it should come straight off

clean mounting place on block with solvent let dry

silicone back (or use gasket that comes with pump ) of pump

apply pump to block (depending on where crank stopped you may have some tension on arm you will have to overcome to get flange to meet block )

use locktite (blue)or simmiliar thread lock on bolts retighten firmly but not hang up the dog tight

use light grease or vasolene on tube connections don't try to tighten dry

Now the fun part your diesel now has air in the fuel system

there are two ways to remove this ( hard and harder)
your choice here are both methods

loosten the fuel supply line for #8 injector ( I did not say remove) 1 full turn ought to be enough

crank engine 30 seconds only
wait 5 minutes for starter to cool down
crank engine 30 sec again
did it start but runs rough while it's still running tighten #8 injector (caution fuel under high pressure)
engine smooth out good your lucky
engine did not start yet
wait 5 minutes
crank engine 30 sec again
start yet
if so tighten #8 injector up

Now here's something I've done to my diesel to make this much less a hasstle

trace fuel line as it comes up from pump
obtain a small low pressure electric fuel pump and a two short pieces of fuel line
and a few clamps

use tube cutter and cut fuel line just before it bends to go in filter
deburr edges
slide tube and clamps over pipe (both sides)
insert pump observe flow arrrow towards filter

the wires of pump can be stretched over to #1 battery terminals

now any time you change a filter or open your fuel system for any reason
all you need do is connect pump to battery
open sharader valve on top of filter for a few min
and start truck as normal
then disconnect wires and stow away for another day

SOURCE: 2004 Ford F350 diesel, changed fuel filters hard starting

Pull the filters and ck for plastic or o-ring in wrong place. Something is up in the filter. 

SOURCE: Need a pic veiw of 2004 ford f350 6.0L diesel EGR

1st of all when Ford started out with putting "EGR's" on those diesel engines, they rushed it and are nothing less than a pain in the ***! i recommend having an EGR cleaning service performed by your local Ford dealer, i know they charge up the wazoo, but they're the best people to perform the service period.this is a VERY common problem with those engines and that service is "supposed" to be performed every 30K I believe. i dont recommend attempting to remove and service it youself, this WILL only make it worse.

Testimonial: "Im relieved to here that someone else is thinking the same thing. Im still going to try it myself as i am somewhat skilled at this but Thanks a bunch!"