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  #16 (permalink)  
Old 03-20-2011, 08:19 PM
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Quote:
Originally Posted by mafiacustomz
their is no level on the dip stick if thats what you want to call it i put compressor oil in it and it spit it out till their was only alittle in it i put 10w30 in the compressor and it work same and still spits out the dipstick i dont know why


First how far up on the dipstick does the oil come? There should be a flat knurled area about 1/2" or so at the end of the dipstick and the oil should be about halfway up on that, if the oil level is an inch or so up on the dipstick then that is your problem.


Next, If the oil level is correct then with the pump running pull the dipstick out and hold your thumb over the hole (BE CAREFUL DOING THIS!!!! ), does it have ANY amount of air trying to blow back out that hole? If there is any noticeable amount of pressure on that dipstick hole then your pump will likely need repair/replacement, have there been any kind of repairs or modifications made already to ANY of the lines/fittings/regulator, etc? Does your unloader valve on the regulator work properly? By that I mean is there a momentary "Hiss" for about a second or so when the pump shuts down? Is there by any chance a continuous hissing or air leak anywhere around the pump or regulator when the pump shuts down? What I am trying to determine is whether or not your back-flow valve in the tank is working properly because this can also cause back-pressure in these little single stage pumps, theoretically a leaky valve there should not cause crankcase pressure but I have seen it happen a couple of times on worn but otherwise still serviceable compressors.

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  #17 (permalink)  
Old 03-24-2011, 12:00 AM
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Well, the crankcase ventilation might BE the hole on the oil fill cap! I know it is on a few of my compressors, so I'm not sure your method of testing crankcase pressure is all that good. As for spitting out.. I'm assuming you're overfilling.. Drain it out, find the manual, and fill it up with the recommended amount.


Brake fluid!??!
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