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Message: [QUOTE="Mercniac, post: 1433062, member: 27401"] 1997 7.3, I noticed fuel in my coolant so I changed injector cups and everything seemed to go smooth, when I finished I turned the engine over 3 rotations by hand to remove oil, fuel etc from cylinders, it started in about five minutes and ran great but I noticed coolant rising and falling in the de Gas bottle, it got late so I let it sit till the next morning, when I tried to start the engine it felt like it was locked up, I turned it over again by hand three rotations and it started right up, After about one or two minutes I noticed coolant mixing with the oil (i left the valve cover off to watch everything), I shut it off, pulled the injectors and pressurized the coolant system, no leaking injector cups, but after 15 minutes of pressure I noticed coolant rising up through the hole in the bottom of the left front injector cup. I don't know what happened, I'm guessing something leaked back into one of the cylinders overnight, If I had know it was locked up,again I wouldn't have tried to start it with out turning it by hand again, guess that's when I broke something. Any info,or advice would be appreciated, this is my daily work truck so whatever is wrong with it I need to fix asap. Thanks [/QUOTE]

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