My brother has a 2000 7.3. Just recently it has been running sluggish. When you first start it you have to let it warm for about 20 minutes till you drive it. IF you dont it just wants to die on you going down the road. When it dies it does feel as if fuel is being cut off . Second if i rev it while I am warming it up it will throw white smoke out. Today while I was driving I was passing someone on the highway and it started to throw smoke out. any ideas on what is going on. My brother thinks it is the glo plugs, But that is only when you start it right up right?

 

When was the last time the fuel filter was changed? I know the cam sensor on the later 7.3s would cause similar problems. I have also seen the Throttle Positon sensor do this too. If it starts ok then its not the glo plugs.

 

yeah the fuel filter was changed about 10k ago i guess it would be worth wild changing it. and then try it. it just seems like it is getting worse. It will start fine but you need to let it warm up before you take off then it will be alright. however yesterday it started acting a little funny while going doing the highway after driving it all day.

It just seem like it is progressing worse.

 

where are all the diesel guys.

 

there isn't many powerstrokes around here

 

Someone was also telling me about a sensor that is located by the valve covers on the drivers side. He was telling me that those sensors usually fail when the engine is sprayed down with water.

do you know what that sensor is called.

 

no but i konw what your talking about. you can take a cup of water and poor over it

 

I am going to try that sensor. I am just going to pull it out and see if there are any changes it behavior. They told me it does some crazy stuff like control the oil pressure and fuel and the same time.... or it either reads them.

 

White smoke from a 7.3l in the mornings most likely means injectors. Also that sensor you are talking about is ICP injector control pressure sensor. It tells the pcm what the pressure in the oil rail is. when you unplug it on a 7.3 it usually defaults to around 600-675 psi. How many miles on the truck?

 

It has around 120,000. Maybe it is time to replace it? That is the thing that kind of puzzled me is that it is throwing out white smoke.