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Air compressor not working

First off, I have no meaningful experience with air compressors, so I'm not really sure what I'd look at in the first place

I got this new jump start/air compressor machine, and I wanted to pump some bike tires up with it. However, while the motor inside it sounds like it's working fast enough, I get no air from it. If I hook connect the valve to a tire, however, while it won't fill it I will get a pressure reading which dismisses the probability of a clog somewhere.

The motor also makes a rhythmic clunking sound every second or so.

I tried waiting for the device's built-in battery to reach full charge in case simply plugging it in wasn't enough, but it didn't help.

Where should I begin looking?

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  • rockinup1231 May 26, 2009

    Well, I cracked it open (rather carefully as not to electrocute myself) and there were no leaks. The clunking sound is the piston, and after watching it (the crankshaft has an opening on one side) it seems that it only does one full rotation every second while the engine spins rather freely.

    The large gear (assuming that's a clutch?) the motor spins, spins rather freely. Is it possible the clutch isn't doing it's job right and is there any way to fix it?


  • rockinup1231 May 26, 2009

    Okay, I tried taking the piston chamber apart, and checking it. I wanted to see if a clog could be the cause, so I left the chamber head loose. Of course it lost compression, but the crankshaft began to speed up to an appropriate speed.

    I think there may be a clog somewhere, but I'm not sure where.


  • rockinup1231 May 28, 2009

    I can't return it, I recieved the thing as a gift (strange gift, lol).I checked to make sure the air outlet was fine before opening it.

    I forgot to update on this, but a few hours after posting my last comment I cracked the cylinder open and cleaned the outlet valve a little, and after reassembly the crankshaft began to spin faster and I could feel the performance improvement at the end of the hose as air. However, it's not powerful enough to pump anything up. It seizes up and is unable to pump once connected.

    I tried cleaning it a little more, but reaped no improvement this time.


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Check were the hose mount's to the motor to see if it cracked or torn to see if the air is comming out there instead .

Posted on May 26, 2009

  • STEVE LESTER
    STEVE LESTER May 27, 2009

    if this is a new product'i would return it for the warranty.if not there are 2 things you can try.1"stcheck to see that the air out let is operating properly by sticking a nail or something in the end to see iff the air is being released at that end if so then it sounds like a manufacturing fault and should be returned for exchanged.

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