Good Trout To You Sir
Petty Officer 3rd Class
- Joined
- May 22, 2018
- Messages
- 85
Motor: E3RC (1987 2.5HP).
Symptoms - motor is overheating per "touch test" when pushed greater than 1/3 throttle. Cools very quickly once brought to slow speed. When on the water, sometimes I hear a "clinking" sound in midsection, leading me to question whether water tube is vibrating enough to strike inside of exhaust housing. [ Is this a key observation? ]
Visually difficult to assess tell-tale. This model emits spray from small holes on back of exhaust housing. In barrel test, see spray emitting at low speeds. Would expect to see higher pressure spray from tell-tale at greater speeds. Unclear if that's occurring.
Inspection of engine block, tubing, wire insulation: all good. No signs of black paint loss around block. (Perhaps this means little.)
Water pump assembly approx. 10 months old. Just inspected impeller. Looks good. Tested pump action in bucket of water with drill to turn drive shaft. At low RPMs, volume of water exiting pump seems impressive. Ruling out pump failure for now..
Improper transom height leading to ventilation also ruled out for now. Motor still overheats when mounted for deeper running.
*** Is there a slick diagnostic anyone has used to assess likelihood of fault at top water tube / grommet connection point? Sure do wish to avoid removing exhaust housing for visual inspection if I can avoid it. ***
Your thoughts appreciated!!!!!
Symptoms - motor is overheating per "touch test" when pushed greater than 1/3 throttle. Cools very quickly once brought to slow speed. When on the water, sometimes I hear a "clinking" sound in midsection, leading me to question whether water tube is vibrating enough to strike inside of exhaust housing. [ Is this a key observation? ]
Visually difficult to assess tell-tale. This model emits spray from small holes on back of exhaust housing. In barrel test, see spray emitting at low speeds. Would expect to see higher pressure spray from tell-tale at greater speeds. Unclear if that's occurring.
Inspection of engine block, tubing, wire insulation: all good. No signs of black paint loss around block. (Perhaps this means little.)
Water pump assembly approx. 10 months old. Just inspected impeller. Looks good. Tested pump action in bucket of water with drill to turn drive shaft. At low RPMs, volume of water exiting pump seems impressive. Ruling out pump failure for now..
Improper transom height leading to ventilation also ruled out for now. Motor still overheats when mounted for deeper running.
*** Is there a slick diagnostic anyone has used to assess likelihood of fault at top water tube / grommet connection point? Sure do wish to avoid removing exhaust housing for visual inspection if I can avoid it. ***
Your thoughts appreciated!!!!!