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I have a Model # AC2001B 2HP/4 Gal air compressor that I bought on 8/1/08. It's performed very good until today. It runs but it won't produce compressed air. The pressure dials show no pressure. The machine has sufficient oil and the air tank drain valve is closed. What could be wrong?

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  • jgodshalk Aug 22, 2010

    It's not the relief valve, so I might as well tear into it to see if the problem is one of the other things you suggested. Thanks heatman 101.

  • jgodshalk Sep 13, 2010

    The reason my Clarke air compressor wouldn't work was because the air intake filter was blocked!!!!

  • jgodshalk Sep 13, 2010

    After disassembling the air compressor and not finding any of the conditions you listed I discovered that the air intake filter was completely blocked! Since it can't be taken apart I tried cleaning it with various fluids but none worked. I finally made a filter. The compressor works fine now!



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First thing and simpleest that you haven't checked is the relief valve...
From there it gets way more complicated...
Hole in the piston...
Compression rings...
broken valve....
broken connecting rod...
blown head gasket...

It definetly seems to be something internal...
probably cheaper to buy a new one...


Posted on Aug 21, 2010

  • D. Floyd Kolb
    D. Floyd Kolb Sep 13, 2010


    I guess I didn't think of that because I assumed incorrctly that normal maintenance was being performed on the air compressor...

    Goes to show that I should never assume even the simplest things...:-)

    Anyway thanks, I will make sure to include that in any other solutions from now on, even if I get laughed at for it...which does happen by the way,,, I have to have very thick skin to do this...!!!

    Seems many times you cannot win...

    Glad you have it running again!!!




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