Compression Ignition Addict
Join Date: Mar 2006
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What a freak think to happen..! Now this engine is a double valve rocker assembly, one rocker does two valves, someone correct me if I am wrong as I am only reading about it, I have not torn a 6.0 down yet.. (Hopefully I never will)...
Two questions, and maybe I can give you some Engineering answers...
1) Was it intake or exhaust valves that the rocker arm came off of??
2) Is it still sooting?
If Ford says it is fixed and there is no damage, it might just be a case of running it a few miles to seat in rings and such...
From all my studies, I ran mine about 1000 miles light loading, 2nd thousand a bit more, and started heating it up by running up the rpm a few times a day every couple of hundred miles, in the second thousand. I did this in a lower gear, first few days up to 3000... Then a couple of hundred miles later I ran it up a few days to 3200 and engine braked down to 2000 rpm to do it again..... Then a couple of hundred miles later, up to 3400... Then about 3600. This heats up the engine from about its norm of 192-94 F to about 204-206 F.... At about 2000 miles I started running it up to the 3500-3600 rpm and engine braking back down to 2000 rpm a few times. After about four times or so, engine temp got up to about 208 F. Then at 2000 miles or so, I hooked up a two ton trailer, and ran around with it for a day, romping it a little now and then as I entered the Highway... This has resulted in a good early ring seat in, or at least a good start on it. Now at about 3000 miles, it seems at least to have the rings fairly well seated in...
From my studies this is about the best way to run it in and seat the rings good. It is also recommended by some Engineering sources, and articles they have written on the best way to run it in. You don't want to baby it, or the rings can take 10,000 or more to seat in if you do not get on it a bit...
Anyway, I might just copy this and make it a Post,..... Naw, people should see it. I know little about the 6 litre, so I study a lot.. But I am a 55 year old Rig Junkie, and a fair engineer on diesels, and before I panicked about your engine, I think I would run it in and see if you have a problem. If you answer the two questions above I might have more for you..
Best Regards, Ranger down under...