Home › Forum › Ask A Member › Johnson TD20 / TN26 etc. – T-shooting Part 2 › Re: Johnson TD20 / TN26 etc. – T-shooting Part 2
April 29, 2015 at 11:32 pm
#15043
quote aquasonic:
On the TD-20, the exhaust enters the midsection below the base gasket. The exhaust has its own gasket, the rectangular vertically mounted one you can see that joins the powerhead to the midsection.
Underneath the base gasket, in the midsection, the exhaust mixes with the cooling water that is exiting from the external cooling tube that connects to the cylinder head.
The only way that I can think of that water would be backing up into the exhaust would be if the midsection was clogged up with carbon and oil and unable to drain. If that was the case, then the motor probably wouldn’t run at all.
Could the spring and washer at the stem be stuck partially closed, or not allowed to open well, causing expelled cooling water to pool?