Ever since entering the warm waters south of Cape Cod on my trip south I've been closing off the bypass valve completely to run at my normal temperature of 160+.
This is a FWC engine. Some nights after stopping I have forgotten to open up the bypass value and in the morning have started up the motor and headed off.
Four times after doing this (usually I do remember to open the bypass valve at night) I have noticed a low condition on my overflow bottle. It takes 3 coffee mugs worth of liquid to bring the level back to normal.
I am wondering if having the bypass valve closed when the engine starts in the morning may have caused extra pressure and thus a seepage out the water pump seal? There's no other place for water to escape from. I do find some wetness below the pump but cannot say conclusively that it is from a drip.
Even with the bypass closed the temperature seems to have been a little warmer than previously. I wonder if the inside of the pump has also become worn. Does anyone have the specs for the inside diameter? It may make more sense to get a new pump than to rebuild the old one, which has about 2,100 hours on it.
-Jonathan
This is a FWC engine. Some nights after stopping I have forgotten to open up the bypass value and in the morning have started up the motor and headed off.
Four times after doing this (usually I do remember to open the bypass valve at night) I have noticed a low condition on my overflow bottle. It takes 3 coffee mugs worth of liquid to bring the level back to normal.
I am wondering if having the bypass valve closed when the engine starts in the morning may have caused extra pressure and thus a seepage out the water pump seal? There's no other place for water to escape from. I do find some wetness below the pump but cannot say conclusively that it is from a drip.
Even with the bypass closed the temperature seems to have been a little warmer than previously. I wonder if the inside of the pump has also become worn. Does anyone have the specs for the inside diameter? It may make more sense to get a new pump than to rebuild the old one, which has about 2,100 hours on it.
-Jonathan
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