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Originally Posted by rkvons
Just curious, but what is the history on the car? Was it purchased recently and was ticking? Has the oil been changed religiously? You might want to change the oil and substitute a quart of Rizlone and see if that helps. I did a lower intake manifold (LIM) change last year on a 3400. In order to get the LIM gasket off, you have to remove the push rods. You are basically staring down at the guts of the engine at this point. I found out later that I could have removed a retainer of some kind down at the bottom of the engine "valley" and could have removed the lifters. I may be over symplifying it and someone can correct me if I'm wrong, but it seems like you would have to do the dissassembly involved with a LIM replacement and then dive deeper, removing that retainer and the lifters. Finding the ticking one would have to be done with a stethiscope sorta thing while the engine was running, but if your going in that deep, just replace them all. I don't really know if there is a special procedure for filling them with oil somehow before putting them in. And them how do you adjust the lifters? Try the Rizlone and hope it works.
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The car was bought 3 weeks ago from a local dealer. When we originally looked at the car it was ticking. The dealer said that they would replace the lifter. When we went back in 2 days to get the car it was quiet and they said that they replaced the lifter. After 2 days the noise was back. Changed the oil and added a quart of STP. Found that this was the wrong way to go. Took the car back to the dealer and found that all that they had done is change the oil and added a qt of Marvel Mystery Oil. They wanted $500.00 to replace the lifter. Yhis car was sold "as-is" with no waranty. We changed the oil again and added a qt of MMO. It got somewhat quiter for a day or so, now it's noisey again. It is coming from the rear bank and I do have an automotive stethescope.
I just was wondering if it is as simple as removing the rear valve cover, rocker arm, push rod, and grab the lifter?