Frisbee650
Registered User
Hi all. First time poster, but I have searched and used the forum any time I am working on something. A little about me, I am a Ford and diesel fan, I have a ’93 F-250 IDI with 160,000 miles and an ’01 F-250 Power Stroke with 340,000 miles. As the title states, I am having an EGT issue with my ’93, and was hoping for some help and input. I am not a mechanic by any means but am able to get things done with the help of the web.
This is going to be a long post, hopefully I am trying to supply all the necessary information for some help.
I bought the pick up last November with the intentions of turning it into a camping rig I could use for quick trips, due to life and other issues it took me until May to put a complete tank through it. The truck came with receipts for a bunch of recent work including a new injection pump 3 years and 12,000 miles ago. I started using it a little more this summer and noticed on trips into the hills with nothing in it besides me, my daughters, a dog a cooler and some chairs that it was blowing black smoke on the grades we were driving up. Started doing a little research and became worried that the fuel had been turned up by the previous owner. The truck wasn’t smoking like some of the kids you see around town, but I could make it blow pretty good if I got on it. I installed a Pyrometer per the following web site, I used the exact gauge and installed the probe in the same location they did.
http://www.dieselhub.com/performance/idi-pyro-install.html
Once the installation was done I took the truck on a test drive completely empty on the interstate where there is a grade with the cruise set at 70 MPH the EGT’s immediately went to 1,100 degrees and stayed there until I topped the grade. I then turned the fuel down one flat and repeated the same test; the EGT’s dropped about 150 degrees and the smoke was completely gone. Even though this didn’t seem like it was enough of a reduction I hooked a 12x6 enclosed trailer with a washer and dryer in it and headed for the hills to pull some grades. Before I could even get to the grades I hit 1,200 degrees on the little hills going out across the desert, I never saw smoke. I began to wonder if something else was wrong so I started doing more reading and research. The only other item I could find that would affect EGT’s was the CDR valve. I removed mine and cleaned it, it was full of oil and there was evidence of oil getting into the intake. In the end I ordered a new one and installed it. Last night I hooked the same trailer up and headed up the same route as last time. I got across the desert under 1,200 degrees, but as soon as I hit the grade I had to left off and shift down.
There have been several weeks in between each of these drives, I don’t know how much the conditions outside are affecting the temps.
I am not sure where to go now, I am thinking I need to turn the fuel down again, with the fact the smoke is gone, and I have no idea if the fuel was actually turned up, I am not sure that is the right thing to do. Can you hurt anything by turning the fuel down to much? Anyone have any suggestions or advice? I would like to drive this truck on a 2,400 mile road trip next week, but won’t unless I am comfortable it is good to go.
My ’01 was being used by someone else for a while this summer; I almost started using the ’93 to pull my 26’ camp trailer before I installed the pyrometer. I am sure glad I didn’t.
This is going to be a long post, hopefully I am trying to supply all the necessary information for some help.
I bought the pick up last November with the intentions of turning it into a camping rig I could use for quick trips, due to life and other issues it took me until May to put a complete tank through it. The truck came with receipts for a bunch of recent work including a new injection pump 3 years and 12,000 miles ago. I started using it a little more this summer and noticed on trips into the hills with nothing in it besides me, my daughters, a dog a cooler and some chairs that it was blowing black smoke on the grades we were driving up. Started doing a little research and became worried that the fuel had been turned up by the previous owner. The truck wasn’t smoking like some of the kids you see around town, but I could make it blow pretty good if I got on it. I installed a Pyrometer per the following web site, I used the exact gauge and installed the probe in the same location they did.
http://www.dieselhub.com/performance/idi-pyro-install.html
Once the installation was done I took the truck on a test drive completely empty on the interstate where there is a grade with the cruise set at 70 MPH the EGT’s immediately went to 1,100 degrees and stayed there until I topped the grade. I then turned the fuel down one flat and repeated the same test; the EGT’s dropped about 150 degrees and the smoke was completely gone. Even though this didn’t seem like it was enough of a reduction I hooked a 12x6 enclosed trailer with a washer and dryer in it and headed for the hills to pull some grades. Before I could even get to the grades I hit 1,200 degrees on the little hills going out across the desert, I never saw smoke. I began to wonder if something else was wrong so I started doing more reading and research. The only other item I could find that would affect EGT’s was the CDR valve. I removed mine and cleaned it, it was full of oil and there was evidence of oil getting into the intake. In the end I ordered a new one and installed it. Last night I hooked the same trailer up and headed up the same route as last time. I got across the desert under 1,200 degrees, but as soon as I hit the grade I had to left off and shift down.
There have been several weeks in between each of these drives, I don’t know how much the conditions outside are affecting the temps.
I am not sure where to go now, I am thinking I need to turn the fuel down again, with the fact the smoke is gone, and I have no idea if the fuel was actually turned up, I am not sure that is the right thing to do. Can you hurt anything by turning the fuel down to much? Anyone have any suggestions or advice? I would like to drive this truck on a 2,400 mile road trip next week, but won’t unless I am comfortable it is good to go.
My ’01 was being used by someone else for a while this summer; I almost started using the ’93 to pull my 26’ camp trailer before I installed the pyrometer. I am sure glad I didn’t.