Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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Compressor will not build pressure

Compressor stopped building pressure, it is an oil based unit. i replaced the piston assy, now it builds pressure to 25 psi, unit keeps running but will not build past 25psi, cannot find any leaks, unit is only 14 months old & has hardly ever been used, it is a craftsman upright, small garage unit, supposed to build to 140 psi

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  • tim5782 Feb 27, 2009

    found my problem, the head gasket had a very small crack. my bad, i missed it!!!

  • jmosyjowski Mar 08, 2009

    My compressor, less than 2 years old, won't build pressure

  • Karl Mielke Jul 13, 2017

    from my experience, a compressor that fails to build up pressure could also be a cracked reed valve. The reed valve (a small, thin, rectangular piece of stainless steel metal) is located above the piston. There are two of them, one that opens during the upstroke and the other is closed, and visa versa. It's easy to replace.

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Compressor will not build pressure

Posted on Feb 28, 2009

  • Anonymous Feb 28, 2009

    this compressor is a upright 60 gallon tank .

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