Hi all,
A month ago I ran my A4 with the raw water intake closed and overheated the engine and fried the impeller. I replaced the impeller and still overheated. I assumed it was a piece (only two small ones unaccounted for) of the old impeller clogging up the heat exchanger. However after more thorough investigation, it seems I haven't had an opportunity to have that problem yet. I am not getting water to the heat exchanger. I am getting water in through the thru hull fine. when I take off the inline strainer and open the thru hull water comes in. there is no blockage in the hose from the strainer to the water pump.
I disconnected the out flow hose to see if water was coming out of the pump itself.
I filled the intake hose with water (holding the disconnected end in the air) from the end i disconnected from the strainer and ran the engine. water at first dribbled out but then stopped with water still remaining in the intake hose. The impeller looks fine when I take the back plate off and take a look. the brass fitting on the outflow side is clear. The belt is in good shape and the drive seems to be turning.
I don't know what else to check. any thoughts on what could be going wrong would be greatly appreciated. Thank you!
A month ago I ran my A4 with the raw water intake closed and overheated the engine and fried the impeller. I replaced the impeller and still overheated. I assumed it was a piece (only two small ones unaccounted for) of the old impeller clogging up the heat exchanger. However after more thorough investigation, it seems I haven't had an opportunity to have that problem yet. I am not getting water to the heat exchanger. I am getting water in through the thru hull fine. when I take off the inline strainer and open the thru hull water comes in. there is no blockage in the hose from the strainer to the water pump.
I disconnected the out flow hose to see if water was coming out of the pump itself.
I filled the intake hose with water (holding the disconnected end in the air) from the end i disconnected from the strainer and ran the engine. water at first dribbled out but then stopped with water still remaining in the intake hose. The impeller looks fine when I take the back plate off and take a look. the brass fitting on the outflow side is clear. The belt is in good shape and the drive seems to be turning.
I don't know what else to check. any thoughts on what could be going wrong would be greatly appreciated. Thank you!
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