Question about Stanley NEW Bostitch 2 HP 6 Gallon Electric Air Compressor

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Bostitch 6 gal compressor leaking air at all pressure levels. I can't tell where the leak is coming from. I can run the pump and the tank will build pressure but it slowly leaks out. There is a an audible hiss that sounds like its coming from inside the black covered motor somewhere.

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Do you have a pressure relief valve. Take off the cover, make sure all fittings are tight and their is no cylinder head leak

Posted on Aug 26, 2010

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Line is fine, but still leaking


Take a spray bottle and put some soapy water in it; spray it on the path that air flows (line from pump to tank, pressure regulator, air line fitting) to find where the leak is. Once you find the leak will determine what has to be done to fix it.

**the soapy water spray will bubble wherever air is leaking**

Nov 01, 2015 | Craftsman 33 gal Air Compressor 6 hp...

1 Answer

Leaking around Pressure Switch. Ordered & replaced switch but still leaking


Some pressure switches have a valve that reliefs the compressor head pressure when the motor stops and closes the head pressure relief valve when the motor runs.
There is a check valve that keeps air pressure from coming back to the compressor head and the relief valve.
I think the check valve is leaking tank pressure to the relief valve and compressor head.
The check valve is where the pressure switch mounts on to and it mounts threaded on to the compressor tank.
Try replacing the check valve

Nov 01, 2015 | Craftsman 33 gal Air Compressor 6 hp...

1 Answer

Bostitch 2 hp , 4.5 gal. compressor leaks air out of air cleaner


Air leaking air out of intake when the compressor is not running and pressure in tank indicates bad check valve. Follow the discharge tube to where it connects at the brass valve mounted to tank. This valve is a non-return valve and can be replaced with generic valve. When air blows or pulsates out of intake as the compressor is running is indication that pump has bad valves or blown gasket/ gaskets. Good luck

Apr 06, 2014 | Stanley Air Tools & Compressors

1 Answer

I have a Stanley Bostitch CAP2000P-OF Air Compressor. It runs constantly and won't reach the shutoff pressure. It will build some pressure. When I turn it off, I dont hear any leaks.


Jim:
There is a leak somewhere... Use a soapy solution at the air tube from the compressor head to the tank (both ends) and at all air hose connections. The bubbles will tell you where the leak is and you can repair the connections from there...

Aug 17, 2013 | Stanley Bostitch CAP2000P-OF 2 HP Peak 6...

1 Answer

I have a Stanley Bostitch Oil Free Air Compressor 6.0 Gal 2.0 Hp Peak, 1.5 Hp Running 135 Psi The problem is it won't blow out air or hold the air.. How can I fix this?


Some Bostitch compessors are very unique in that they intake air from below the piston. If you cannot find an air filter, then your compessor has reed valve built into the piston that may cause problems. If you have an air filter on the head of the pump, then you have reed valves in the head. When the reed valves fail, there will be very little or no air pressure. Second problem with all compressors is the in-tank check valve. This valve allows air to enter the tank and not back-out into the compressor. Easy to check. Add air into tank with another compressor thru the quick connect and listen for air leaking around the head or pressure switch. If no leaks and pressure holds in the tank then valve ok. Examine the condition of the cylinder and piston ring by rotating the crank by hand so that the piston is at top of cylinder. Look for scratches around upper part of cylinder wall. If scratches, then replace cylinder and piston ring. If top of cylinder looks good, then suspect reed valves. Good luck

Sep 12, 2011 | Stanley Bostitch 2hp 6gal Air Compressor...

1 Answer

My Craftsman air compressor has wored fine till now. It does not want to build up pressure beyond 50 psi.yes I did check the drain valve and no leaks. Motor seems to be putting out the rpm's and the oil...


Check for a leak between you compressor head (pump) and your tank. Your pump output may be good but as your tank pressure gets higher the leak will not allow the tank to build up.

Feb 04, 2011 | Craftsman 1 hp Air Compressor, 4 gal. -...

1 Answer

The compressor reaches 40 psi and won't build pressure past 40 psi it just keeps running. checked for leaks and could not find anything the reeds are working fine.


Hi, my name is John. Welcome to FixYa. There has got to be a leak, check the line coming from the pump to the tank, you may have to remove it to check. I find this is often over looked. Thanks for choosing FixYa...John

Nov 24, 2010 | Stanley FactoryReconditioned Bostitch...

1 Answer

Portable oiless compressor wont pressurize


If there is pressure at the pump, either:

1) The tank check valve isn't opening (it's located where the line from the head enters the tank - usually extends into the tank, and the the pressure switch unloader line comes off of it as well)
2) The pressure switch unloader is bleeding off the air. This is a small valve on the side of the pressure switch. It should close when the compressor is running and open when the compressor shuts off to bleed off head pressure.

Oct 19, 2009 | Campbell Hausfeld No.FP2028 Gal Pancake...

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