Hey guys, I'm new to this site as well as diesel engines!
I just bought a 94 Ford f-250 with 140k miles on it. It runs like a new truck until I hooked it up to a trailer and hauled a shed. On the highway, with the pedal to the floor, I'm doing 65 max!!! I then changed the oil & filter, air filter along with the fuel filter/separator. I haven't had anything else to tow in order to test it, but should the things I've done corrected the problem????
I appreciate any advice!
One more thing to add.....I also put Howes injector cleaner/lube in both tanks.
There are lots of things that could cause a lack of power.
First thing we need to identify is if your truck is an IDI or Powerstroke, 94 was a transition year with 3 different engines. A Natrualy aspirated IDI, a Turbo-Charged IDI, and the Powerstroke which the only thing it shares with the other 2 is displacement.
The water seperater, did it look like a canister type filter (just the filter) or a spin on filter? If it was a spin on, then you have an IDI.
I thank you for your response madMatador78 and apologize for not being more clear on what I have. It's a 94 7.3 Turbo Diesel. It continues to run rough at times. Example; once the engine warms up and it kicks down a "regular" idle, it really drops to about 200 rpm, engine jumps around and blows blue color smoke. If I take it out and run it down the road, it usually straightens out and runs fine. It still is a dawg while under a load. The shed was only a 6x6 and I understand wind drag, but what the heck is going to happen when I hook up my 9000 travel trailer! I do not hear a whistle sound like I hear in other diesels, could that be the problem...the turbo?
Normal service life on injection pump and injectors for IDI's is around 100,000 miles. Timing is also a big issue with those motors. As the injectors wear timing will become retarded and make the engine sluggish.
Check out www.oilburners.net on the 6.9/7.3 IDI threads. There are always about 150 users online at any time of the day and you will get more information you can handle on how to get that girl back up to par.