How many miles on the truck?

If it has not had regular maintance done I would go ahead and plan on new glow plugs, new Glow plug relay, new injector O rings, a compression test and a leak down test.

That would give you a good base line.

 

A new glow plug relay is 60 bucks and takes 10 minutes to change and a new cam position sensor is 24 and takes 15 minutes to change

 

Cam sensors do not wear out, they work or they dont. NO reason to pull one that is working.

In over a million miles of driving the 7.3, I have had one go out on me...

Dont touch it if its working.

 

Thanks for help, my truck has about 150k
I am going to replace the glow plug relay
Tomorrow and Wednesday I have a shop that
Will look at my engine and put new glow plugs in.
When I changed my fuel filter was covered
With grey stuff. Is this normal? The diesel fuel
was yellow green in color.

 

Did the truck sit for a while? Gray could be algie in the fuel, could be water. Hard to say.

Add some Seafoam to the bowl, and keep the tank full of fuel as much as you can. This keeps Algie from forming and growing.

 

Ya person that I bought the truck from only drove it
Ocasionaly. I'll get some seafood

 

SEA FOAM

Not seafood... That would be bad!

 

Sorry typing on my HTC Eco. If you don't watch
It will put what it thinks you said.

 

my truck smokes blueish gray at startup but clears up when its warm, my buddy has a fairly new motor in his common rail cummins and it smokes the same color at startup. i've never gotten a straight answer on this subject.

 

i heard that seafoam was not good to run in these?