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I pulled the push rod cover from my '91 CTD and found this clip/thing laying between the #2 and #3 pushrods. It appears to have part of it broke off (right side in pic below). What is it? This engine seemed to run fine when I bought it.
The only things inside the cover are the push rods and the top of the lifters, that's it. It's certainly not a valve spring, way too small, it appears to more of a retaining clip, but I'm not sure. It has a slight amount of orange paint on both sides, so it's not a sealing ring. I just don't know what it is or where it could have come from.
This is a high mileage engine (200k-300k miles), but I don't think this cover has ever been off before. Maybe it's just a piece of debris that was left in during initial assembly, but I'd like to know for sure before I button it back up.
I believe you've nailed it. I haven't pulled the valve covers yet, but I grabbed a new seal out of the new gasket set and it looks like you are correct. I hadn't planned on replacing the valve guide seals, but I guess I will now. No big deal I suppose.
Yup, just what it is! Somebody else had this problem about a year ago. I saw one of these buggers waste an engine. It got sucked up into the oil pump, and jammed. The engine has more HP that the key on the gear can hold!
Well, I cleaned the oil pan and pulled the valve covers, I don't see the other half anywhere. I can't even tell which seal is missing the spring. Maybe when I change the valve stem seals I'll find the missing half.