Air in Water Lines?

When I turn on the hot water faucet in a sink or shower it 'sputters' as if there is air in the line. I have not done any plumbing work that would have caused this... what is happening? I can't find any obvious leaks anywhere???
ML
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Leo wrote:

The water line is pressurized so an leak would not admit air. Maybe your water heater is set too high and there is boiling happening.
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Got some more info, symptoms... We are running out of hot water, quickly... It is still heating some water but not a lot.

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William W. Plummer wrote:

Not always true, flowing water can pull in air through a hole, when the flow stops the the hole becomes a leak. Google "venturi". A leak under a slab could cause this Dave
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I have seen a dip tube in the water heater cause this. That would only affect the hot lines. Does the water smell bad? If so change to an aluminum dip tube in the water heater. Might be gasses disolved in the water like coming out like bubbled out of soda pop with a change in temperature or pressure.
Stretch
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Leo,
------------------------------------- Leo wrote:

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See http://www.irrigationtutorials.com/waterhammer.htm

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Leo,
------------------------------------- Leo wrote:

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Leo,
------------------------------------- Leo wrote:

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Leo, I have been experienceing the same thing. I had a new pump installed and shortly there aftr I experience the air in the lines, primarily the hot water. Did you ever solve your problem? If so please let me know what you did. Thanks Jerry ------------------------------------- Leo wrote:

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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
On Thu, 04 Aug 2005 05:16:27 GMT, sierrraRSt_at_aol_dot snipped-for-privacy@foo.com (jcrandall) wrote:

Shallow well pump?
A leak at the inlet fitting can cause air to be sucked in.
-----BEGIN PGP SIGNATURE----- Version: PGP 7.1
iQA/AwUBQvLEsAIk7T39FC4ZEQL17QCdEobqdiWKSK8aeISwE2IAz/31/WcAn3pG JxmQP+jcndqUNF+UWnFt4cTQ =wFtv -----END PGP SIGNATURE-----
--
-john
wide-open at throttle dot info
  Click to see the full signature.
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