Sea Rider
Supreme Mariner
- Joined
- Sep 20, 2008
- Messages
- 12,345
Scenario: It's a 2 stroke Yam 85 HP motor with 5 years use from out of the box, was having repeated overheating issues and sensor temp kicking in to lower the rpm when at speed. Has been flushed after returning to terra firme occasionally, not religiously on muffs for 5 minutes. Explained the owner that the temp sensor triggering prematurely was due to an excessive salt accumulation on the entire water passages, recommended to remove the thermostat's cover to have a look to check the internal salted condition. Was very reluctant to permit me do so, after some cold ones fully agreed. Definitely Alcohol works miracles.
The issue with removing bolts from a motor that's excessively salted is that can break any bolt's head on the powerhead. With patience managed to remove all 4 thermo housing bolts. The owner almost fell on his back when seeing what was hidden beside the thermo's cover. Pics speak for themselves....
As there's controversy whether the vinegar is effective to which degree to desalt a motor's internal water passages or any of its internal components, have soaked 4 hours ago the thermo's cover in pure vinegar, will check tomorrow morning what happened overnight.
Happy Boating
The issue with removing bolts from a motor that's excessively salted is that can break any bolt's head on the powerhead. With patience managed to remove all 4 thermo housing bolts. The owner almost fell on his back when seeing what was hidden beside the thermo's cover. Pics speak for themselves....
As there's controversy whether the vinegar is effective to which degree to desalt a motor's internal water passages or any of its internal components, have soaked 4 hours ago the thermo's cover in pure vinegar, will check tomorrow morning what happened overnight.
Happy Boating