305 mercruiser while driving over heats...
comesback down at idle and cools down..
replaced thermstat
impeller look good but still replaced
motor waterpump removed inspected spin freely and no wobble
open petcocks flush engine through waterpump inlets
removed risers cleaned up and replaced left side
installed temp gauge to show true temp
motor still overheats and comback at idle...question whats next
whats the possiblity that the water jackets are clogged...or that the exhaust manifolds are rusted and flaking...don't know what to do next...engine timing
help don't want to waste other summer working on this boat
comesback down at idle and cools down..
replaced thermstat
impeller look good but still replaced
motor waterpump removed inspected spin freely and no wobble
open petcocks flush engine through waterpump inlets
removed risers cleaned up and replaced left side
installed temp gauge to show true temp
motor still overheats and comback at idle...question whats next
whats the possiblity that the water jackets are clogged...or that the exhaust manifolds are rusted and flaking...don't know what to do next...engine timing
help don't want to waste other summer working on this boat
