On Sat, 24 Nov 2007 09:15:37 -0800 (PST), Tim wrote:

On Nov 24, 10:22?am, JR North wrote:

The 'slip' at 2600 on the Marquis sounds like prop hub to me.

I wish it was, and would agree, IF it was a gradual slippage, but
this isn't it's like it's kicking out of gear, then when I back off
the throttle, it will sort of "clunk" and grab again.

Tim, I missed your initial post, but saw it in JR's reply. How old are the
manifolds in question. Mine lasted nine years, running in Chesapeake Bay.
But, they should have been replaced at eight, thus saving me an
embarrassing tow when one clogged up out in the middle of the bay.

I had removed them a few years earlier to check them out. They both had a
lot of flaky rust in them then. I had them magnafluxed (?) and cleaned
then.
--
John H