Kim, could you please elaborate on item #4, the mixing elbow? Where do I look for it on the engine?
thanks, -Jackson On Mon, Aug 20, 2012 at 12:54 PM, Kim Brown <kimcbr...@comcast.net> wrote: > Jackson > > FWIW > 1) I would start with the prop and bottom - be sure it is clean. it is > amazing how a few barnacles on the prop can kill speed (and RPMs) and > unbalance things. (what kind of prop?- if folding-one blade not opening > right due to crud would really throw stuff out) BTW can you get it to > 3200RPM in neutral? that would rule out the linkage issue and suggest it is > a load issue. > > 2. new filters- air and fuel. Could check the air filter by just removing > it > and seeing if you get RPMs back. Also look for black powder on filter and > in > engine compartment (belt wear from loose alternator belt) The 2gm uses so > little fuel that it is hard to imagine a fuel filter clogging enough to > limit flow but in either case a visual inspection should show issues. Water > in fuel filter bowl? > > 3) Symptoms sound like Belt is too loose. (burnt belt smell and light that > goes out with higher revs. Think is this is a separate issue from RPMs. > Guess the bearing in alternator could be starting to go bad but I am > guessing just a loose belt.- probably time to replace both anyway? > > 4) Based on having both a 2GMF and 3GM20F over the years I have come to > always suspect the mixing-exhaust elbow when power and RPMs are down. If > you haven't replaced it in a number of years-just do it. It is a PIA to do > and remember to get the close nipple too and Yanmar has changed the water > entry over the years so you may have to salvage a piece off the old one or > otherwise get creative. > > Good luck > Kim > Trust Me!!! 35-3 > > > > > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com >
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