Hello everyone, This is my first post and fairly new to Marine Engines, so please be gentle! 
<br /><br />Received a nice 24' Wellcraft Airslot a few months ago and it had a 1988 Johnson 200. The guy I bought it from said it was a "low water pressure system". While running at idle, it had a little more than a trickle of water, was steady, but not a stream like I usually see. I replaced the entire Water Pump, 100%. Everything went perfectly and went together great. I ran it and got not much more water pressure than before (out tell tail). <br /><br />BUT (the famous BUT), the mid section seemed to fill with water, like the water was filling the mid section instead of going into the engine? I insured the rubber piece that gives a good fit to the water tube in the mid section was installed correctly and did not come loose. Where else could I get water backed into the mid section from?<br /><br />I also replaced both T/Stats (does this effect the flow of water prior to warming up?<br /><br />Idea's I was going to try (hoping someone can give me a pecking order of what I should try first)<br /><br />1. Take out the T/Stats and try to force water back through the system (how effective is this when the pump is still attached to the motor? Do I need to drop the bottom section prior to backflushing?)<br />2. Running the motor for more than just a minute or so and see what happens (deathly afraid of damaging the engine, not something I really want to do).<br />3. dissasemble the mid section and see if there are any issues inside?<br />4. Dropping the bottom section, installing a hose (water hose) to the mid Section Water tube, and forcing water up through the system (with t/stat and housing off) to see if I get 100% flow out the engine?<br /><br />Any advice/help will be great. Thanks
<br /><br />Received a nice 24' Wellcraft Airslot a few months ago and it had a 1988 Johnson 200. The guy I bought it from said it was a "low water pressure system". While running at idle, it had a little more than a trickle of water, was steady, but not a stream like I usually see. I replaced the entire Water Pump, 100%. Everything went perfectly and went together great. I ran it and got not much more water pressure than before (out tell tail). <br /><br />BUT (the famous BUT), the mid section seemed to fill with water, like the water was filling the mid section instead of going into the engine? I insured the rubber piece that gives a good fit to the water tube in the mid section was installed correctly and did not come loose. Where else could I get water backed into the mid section from?<br /><br />I also replaced both T/Stats (does this effect the flow of water prior to warming up?<br /><br />Idea's I was going to try (hoping someone can give me a pecking order of what I should try first)<br /><br />1. Take out the T/Stats and try to force water back through the system (how effective is this when the pump is still attached to the motor? Do I need to drop the bottom section prior to backflushing?)<br />2. Running the motor for more than just a minute or so and see what happens (deathly afraid of damaging the engine, not something I really want to do).<br />3. dissasemble the mid section and see if there are any issues inside?<br />4. Dropping the bottom section, installing a hose (water hose) to the mid Section Water tube, and forcing water up through the system (with t/stat and housing off) to see if I get 100% flow out the engine?<br /><br />Any advice/help will be great. Thanks
