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Old 05-23-2011, 03:34 AM   #1
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darryl97420's Avatar
1974 Argosy 28
Coos Bay , Oregon
Join Date: Aug 2005
Posts: 77
water pump slow to cycle off


Recently I have noticed that the water pump in my 74 Argosy28 will run another 10 to 15 seconds after the faucets are turned off This started not long after I ran the water tank empty.

Any suggestions?

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Old 05-23-2011, 04:53 AM   #2
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Cuddebackville , New York
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Run all the faucets a bit to make sure there isn't air in any of them.

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Old 05-23-2011, 06:49 AM   #3
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1972 31' Sovereign
Lexington , Minnesota
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I agree. Air in the lines will compress quite a bit more than water, and that will make the pump take longer to cycle off. You may need to run the hot water for several minutes to purge air out of the water heater.

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Old 05-23-2011, 07:04 AM   #4
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Morrill , Nebraska
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Water Heater

Bleed the air out of the water heater by lifting the lever on the pressure relief valve.
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Old 05-23-2011, 07:39 AM   #5
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You may have insufficient flow from the pump to properly get rid of all the air; hooking up to city water will help in that case. Bleed the air from the lines as you'd bleed your brakes - start with the faucet/tap closest to the pump (in terms of plumbing runs) and work towards the furthest. Don't forget to open the drain taps as well; they might have some dead end runs that could retain air.

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Bart Smaalders
Menlo Park, CA
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