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Will not build pressure

Runs but will not build pressure

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  • sgfd Oct 24, 2012

    Have you checked all of the seals or do you feel air escaping anywhere on the lines or where the pieces fit together?

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If your compressor is oil-less type, most likely pressure is leaking past piston ring. To verify, remove cover to expose bottom of cylinder (unplug compressor and let out all air). With flashlight, examine the upper-most part of the cylinder (turn motor by hand till piston is at top of stroke). If top of cylinder is scratched, then pressure is leaking past. If cylinder looks good, most likely problem with reedvalves or broken gasket in pump head. Parts are not too expensive for most small compressors. If your compressor is oil lube type, problem sure to be in the head assuming no leaks. Good luck

Posted on Oct 25, 2012

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