ctorrez203o
Recruit
- Joined
- Jun 10, 2011
- Messages
- 3
Hello,
This is my first post, i do want to say this site is AWESOME! Have used it many times the last year for help with my 98 FourWinns.
This is my second season with this boat. Had it professionally winterized last year due to time constraints. Ran the engine on the hose, coolant temp steady in the middle of the gauge, something i have noticed last year no problem.
My main concern was taking the boat out for the first time, I noticed the coolant temp gauge was reading higher than usual from the year before. By high i am saying it was between 1/2 and 3/4. Also noticed while at cruising speed temp was closer to 3/4. Alarmed i slowed down and watched the temp gauge drop back down to below 1/2 on the gauge. this continued to occur. trailered the boat home. Now, last year what was "normal" operation was the coolant would take time time to rise, and stay steady between 1/4 to 1/2 unless an actual load was added I.E. tuber/ skier. also last year the thermostat was replaced, preventive maintenance.
Back home i pulled the sea pump off, and all hoses i could access to inspect for some sort of restriction or flow issue. What i did find was while inspecting the sea pump half of the fins would not "extend" or make full contact with the larger side of the pump. once the pump was disassembled I noticed the fins were all intact but did not seem flexible. also while pulling the thermostat found seaweeds and what looked like a small black piece stuck in the thermostat sealing area. Inspected the exhaust and all other coolant ports with a bore scope, did note there was buildup in the channels but nothing obstructing flow.
After replacing the thermostat and the sea pump, reassembling the engine, checking flow on the new sea pump, running on the hose and then on the water still notice there is a fluctuation in the gauge. i have noticed temp does climb rather fast, 5 minutes of run time, to 1/2, cruising will raise slightly but when bring down to an idle temp may drop down to 1/4. I say may because not every time.
If anyone has any ideas on why this is occurring i would love to hear them. I do know i should probably inspect the electrical side of the circuit. But being it seems to be a cooling issue i wanted to make sure mechanically everything was ok. the only other part i can think of right now is the circulation pump possibly being worn enough to cause the rise but not enough to completely fail.
Thanks again, and sorry post was so long, just wanted to give a good view of my concerns.
This is my first post, i do want to say this site is AWESOME! Have used it many times the last year for help with my 98 FourWinns.
This is my second season with this boat. Had it professionally winterized last year due to time constraints. Ran the engine on the hose, coolant temp steady in the middle of the gauge, something i have noticed last year no problem.
My main concern was taking the boat out for the first time, I noticed the coolant temp gauge was reading higher than usual from the year before. By high i am saying it was between 1/2 and 3/4. Also noticed while at cruising speed temp was closer to 3/4. Alarmed i slowed down and watched the temp gauge drop back down to below 1/2 on the gauge. this continued to occur. trailered the boat home. Now, last year what was "normal" operation was the coolant would take time time to rise, and stay steady between 1/4 to 1/2 unless an actual load was added I.E. tuber/ skier. also last year the thermostat was replaced, preventive maintenance.
Back home i pulled the sea pump off, and all hoses i could access to inspect for some sort of restriction or flow issue. What i did find was while inspecting the sea pump half of the fins would not "extend" or make full contact with the larger side of the pump. once the pump was disassembled I noticed the fins were all intact but did not seem flexible. also while pulling the thermostat found seaweeds and what looked like a small black piece stuck in the thermostat sealing area. Inspected the exhaust and all other coolant ports with a bore scope, did note there was buildup in the channels but nothing obstructing flow.
After replacing the thermostat and the sea pump, reassembling the engine, checking flow on the new sea pump, running on the hose and then on the water still notice there is a fluctuation in the gauge. i have noticed temp does climb rather fast, 5 minutes of run time, to 1/2, cruising will raise slightly but when bring down to an idle temp may drop down to 1/4. I say may because not every time.
If anyone has any ideas on why this is occurring i would love to hear them. I do know i should probably inspect the electrical side of the circuit. But being it seems to be a cooling issue i wanted to make sure mechanically everything was ok. the only other part i can think of right now is the circulation pump possibly being worn enough to cause the rise but not enough to completely fail.
Thanks again, and sorry post was so long, just wanted to give a good view of my concerns.
