I have a 91 f350 7.3L IDI 5spd Manual, that sat for about a year but once was a daily driver with no know problems. The truck was gifted to me from a family member so I cant complain! With some help from a shot or two of ether and some cranking, it fired right up and I was able to drive it to my shop. Once parked at my shop, I noticed a few fuel line leaks and the O ring on the fuel filter heater leaking pretty bad which was the start of my problems. I didnt do anything with it for a month or two except fix the fuel line leak to prevent draining the fuel tank onto the floor. I ran the truck every few weeks until the leak on the filter heater got bad enough that the truck stopped running. I have since removed the filter heater and plugged the hole with a rubber plug. I have then tried to get it started but have had no luck what so ever, even with ether or WD40. I know I was getting air in the fuel lines so I started by replacing the fuel filter and installing an electric fuel pump with a max output of 7psi. Replaced every fuel line and installed all new fuel return lines, caps and O rings. Installed (2) new 850CCA batteries, new battery cables and had a local shop go through the Mitsubishi starter. Bleed the fuel system completely and I have fuel to each injector. The air intake is currently off, so there are no restrictions there. The exhaust is straight piped with no restrictions either. The glow plugs cycle for about 10sec, however I do know of 2 GP's that do not work but this should not keep it from starting, keep in mind this is FL and its 90 plus degrees. I have white smoke exiting from the exhaust pipe when spinning the motor over, but also have some white smoke coming out of the air intake. I have also plugged the block heater in and it still makes no attempt to run. I have not yet changed the oil but have checked the oil level and it seems to be fine I have read a few other post about guys adding some oil and the truck cranks up, but I dont understand how that would affect anything here. Fuel tanks are 3/4 full and full, but fuel is about 14 months old would this have any affect? Im losing hair over this, so any suggestions would be appreciated.

 

wow, someone that used the search feature. thanks and welcome. you already answered every "standard" question i ask. the older fuel shouldnt have any affect on it. i fired mine up with 3 year old fuel.

now, you have smoke out the tail pipe. have any access to a compression gauge? since obviously you have fuel since there is smoke, i am curious if the compression is good. could also be the injection pump is gummed up from sitting. when u put the filter on, what did you fill it with? i would say to take the filter off, dump it out and fill with either dieselkleen or ATF. then reprime the system and let it sit for a day. let the solovents break down any gunk in the injection pump. then try and start it.

 

Thanks for replying to my post, im desprite for suggestions. I may have access to a compression guage and when I get around to checking compression I will repost the results. As for the fuel filter, I just filled it with diesel fuel and bleed the system. I did not put any additives in the filter, but will definately try adding either one of the products you suggested. Its funny you mention the IP maybe having junk buildup because I had a very hard time bleeding the system and getting fuel to the injectors. It took several attemps of just cranking to get the IP to push fuel to the injectors. I feel that Im overlooking something really simple.

 

Mine's been doing the same stuff lately. Plug it in and crank it for a 20-30 count. I'm amazed at how tough my starter is.