Posted by Janicholson on February 25, 2011 at 07:28:05 from (199.17.6.194):
In Reply to: 301 low oil pressure posted by mshultz on February 25, 2011 at 05:57:18:
A plug out of a gallery is a serious possibility. The orthe engine was very different, but many engines do have gallery access plugs in them. These are put in when rifle drilling the oil gallery to clear chips, and other reasons. They are found both internally and externally on the main block (usually cam side). The way that the CNKS (if i recall) found the missing plug was to inject air into a gallery port and listen for the escape of air through a missing plug. The plugs are routinely removed when hot tanking a block to clean the passages. Sometimes the crew leaves them out assuming they will be reinstalled by the assembler. (often) Sometimes they even give the original plugs back in a box!. If the pan is coming off, it will be pretty easy to blow air into the oil pump output hole to see where it is going. Using a mechanics stethescope with the feeler end removed can be very helpful listening to the location of an air leak. I hope this helps, or that it is a pump related issue. Jim
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