921.153101, 1 hp, 3 gal, 125psi chug-chugging manner

by Fred Drake
(lake city, fl usa)

runs in a chug-chugging manner,pauses, chugs some more, pause, and then occasionally if it builds up some higher pressure, it will run normally the last few pounds.

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Fred, please empty the tank and start the compressor. Post, as a comment here, at what pressure levels the "chugging" starts.

And, if you are using an extension cord, plug the compressor directly into the wall socket to see if that makes any difference.

Thanks,

Bill

Comments for 921.153101, 1 hp, 3 gal, 125psi chug-chugging manner

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Jun 14, 2012
chugg, chugging can't rev up
by: Anonymous

The chugging came back 1 hour later, I cannot find a descriptive picture to show me EXACTLY what and where the "unloader valve" is hidden on this "Crapsman" (Bob,its a Sears)

Apr 21, 2012
chugg, chugging
by: Anonymous

To answer your question, it would start chugging immediately.Added a new start Capacitor, no go. With some air left in the tank I blew out the "switch" It's now running!! How long, we'll see, Thanks for your website and your concern for us DIY'er
Larry

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Craftman model 919.167310 30 gal. air compressor

by KEITH
(HAIKU,HI, USA)

Compressor is suppose to shut off @ 140-150 psi. It continues to run and if you don't shut it off manually it keeps on running up to 170 psi or more. Pressure relief valve does not come on either. What do you think the problem is?

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Keith:

Please see: www.about-air-compressors.com/pressure-switch.html for information about how the Pressure switch works.

If the compressor doesn't shut off at the normal high pressure cut out, then it's normally the pressure switch that's the problem.

The PRV is set to blow at a higher pressure than the 170 PSI your unit reached before you shut it off, I would guess. Get your compressor running and air in the tank, then pull the ring on the PRV to make sure that it will open. If it does easily, then simply push it closed, and it should stay.

Cheers,

Bill

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