Was driving the other day, at a traffic light i noticed a fuel smell, pulled over and poped the hood, coolant was puking out of the wheep hole at the top of the bottle, i was kinda shocked that i smelled fuel and seen coolant leaking, the bottle was clear full, smelled the leaking liquid, and sure enough it was diesel fuel. Now, what the hell is causing that, my guess is that my head or heads are cracked, that is all i can come up with for why i would have fuel in the coolant bottle.....any other ideas guys..

 

Probably the injector cups.

 

What Huck said.

 

Is this a pressed in cup, i always thought they were cast into the heads. im gonna pull the motor out anyway, wanna replace the oil pan now that i have a good reason to pull the motor. might as well do it i guess, if im gonna have to pull the heads off i just might as well jerk it all out and do a bunch of prev. stuff now i guess.. thanks guys.....

 

What Huck and Chase said.

I had the same problem that you described, it turned out to be a bad injector cup.

 

Cups can be done with the engine in. You can get everything you need to do the job from Swamps, including use of the special tools needed to get them out & back in.

 

Swamp's Webstore - Injector Cups InjCup

 

Here is some more reading for you on injector cup R&R https://www.ford-trucks.com/forums/5...-r-r-info.html

 

thanks to all, whats involved with changing the injector cup, i have no idea what im gettin into

 

You don't need to pull the heads to pull the cups, you just need a big **** tap to thread into the cup and a way to yank it out, then another tool to push the new cup into place.

Powerstroke 7.3 Fuel Injector Sleeve puller/driver:eBay Motors (item 160378813540 end time Nov-26-09 08:56:40 PST)