Air in Waterline at Faucet

[JusDreaming]

Well another project/problem has arisen
When we initially turn on the faucet we get usual water, then in seconds we get a ton of air, for about three or four minutes, then works fine,which annoys the Admiral!!!!!!!!
So I have checked for air/water leaks and can find none. The pump does not run more than it should.
The system consists of, (in order), manifold,pump, back flow preventer,(I think?), accumulator tank, then to faucets.
So any suggestions of diagnoses or fixes

[James S]

Sounds like the backflow preventer is'nt working

[Cheechako]

If you bleed the air out of all faucets starting with the highest one, that should do it. If it comes back.... that's wierd. Do yo have a deck washdown outlet that is higher than the faucet in question? Also, is it the hot water? Hot water heaters can have air pockets in the tank that wont come out....

[HiBeam]

Check the pickup before the pump. Usually the pump has a check valve before it so it will hold pressure. If the pickup line is cracked or loose it could suck in air that way. It's like sucking a soda thru a cracked straw. You still get something to drink but it has air in the drink.

[JusDreaming]

Thanks guys, I did all the above and one of the procedures fixed it
I bled the system, I also took the back flow out and blew through it, and tightened all the hose connections in front of the pump, and so far so good