diesel in my radiator??

Injector cup o-rings here too. Not a bad job to replace. The head doesn't have to be removed to change them.

 

Same here, also on a '97.

 

yeah injector cups i would assume

 

Most likely injector cup o-rings reason you see it in the radiator is fuel pressure is higher that water pump pressure whiles your engine is running. Engine shut off the fuel pressure bleeds off from the injector cup o-rings being bad then water pressure goes the other way into your fuel tanks. Also could be there was a failure and they didn't get all the fuel out of your radiator from previous cup change. Shine a flash light into your fuel tank looking for coolant in the bottom of the tank is good preventive practice. Its all labor and flush flush flush! Buy new injector cups and high strength lock tite and set of o-rings.

 

You're gonna need a nice little slide hammer for that job. Maybe you can sweet talk a mechanic into borrowing or renting his set for a weekend.

 

Didn't the engine run bad with some broken rockers? I broke a valve lash adjusting screw about a year ago and the way the engine sounded I was almost scared to pull the valve covers. Very relieved when I found that it was only a $6 screw.
I bet yours runs good now.

 

This is not good info coming from a shop thats suppose to perform this work I hope you got the forged rockers installed.