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Craftsman Air Compressor

My Craftsman Air Compressor, model 919-165090 will only pump up to about 40psi and never turn off. I assume it's a leak but having trouble finding one.

Thanks,
Greg
capcitypro@nc.rr.com

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  • 313 Answers

Piston seal problem for sure

Posted on Aug 20, 2008

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My sears air compressor model 919.156781 will not pump up past 40 psi , then motor then compressor stalls and motor gets hot , have to unplug . I have had the motor checked


When it gets to 40 psi turn it off and see if you hear air leaking down from somewhere....if so listen and feel around the edges of the compressor head. If you hear or feel air leaking there you may need to replace a head gasket.

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I have a model# 919166442 air compressor that all at once quit building air pressure. when it gets to 40psi the engine keeps running but air pressure wont rise


There is a check valve that has gone bad,this allows air into the tank,and does not allow the air to go back toward the compressors head.This can also cause the compressor to lock up.

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We have a Craftsman 15 gallon air compressor, model # 919.166442. It has worked fine for small jobs for the last few years. Went to turn it on and it simply won't turn on. It won't pressurize. Is this...


Hi, my name is John. Welcome to FixYa. Will it come on at all? Check the outlet circuit breaker, if it comes on at all, check where the line comes form the pump to the tank, there got to be a leak, you may have to remove it in order to check under it. Check for a reset button next to the wire coming to the switch. Thanks for choosing FixYa...John

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1 Answer

Only builds up to 40psi


I am assuming you have check for line leaks, both on the compressor and your line out of the tank and the valve on the bottom of the tank is closed. This is usually a sign your valve plate is damaged, most likely a broken reed valve. If it's an oilless compressor it could be the wiper on the piston. Without knowing the model number all I can suggest is take the head plate off and check the valve plate. If all of the reeds are in place and not broken or cracked you'll have to check the piston.

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1hp 4gal 2 tank Craftsman Air Compressor not Compressing


Try emptying the tanks completely. There should be a bleeder valve for each tank. Sometimes after sitting for a while with pressure, the compressor won't have enough power to start. If you get the same response with empty tanks, there is a problem with the pump pistons.

Dan

Jan 11, 2010 | Craftsman 1 Hp, 4 Gal. Air Compressor

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I have a craftsman 6.5 60 gal horz compressor.


i have the same piece of junk, iv rebuilt it 3 times in the past 5 years always a piston rod snapped and then it was running on only one. they are built like ****. anyhow I finely got smart and bought a cast iron pump thats not only quieter but puts out twice the volume of air in half the time. it took some work but it was well worth it costing under 200.00. the rebuild kit from sears will cost over 100 and it wont last. the one from sears is a direct drive pump and you will be told no one makes a direct bolt on but all it takes is cutting the aluminum housing away from the motor and welding a pin or bolt to the end of the shaft and putting a pully on it, you will also have to turn the motor to the side but let me tell you this was the best move i ever made. you can pick I bought my new pump from a place called heavy dudy air in ga. 877-447-2485

Oct 10, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

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Craftsman compressor


these small compressors do not have a long life especialy if they are run for more than 15 min /hour , bet no body told you that when you bought it the ones with an iron barrel are better so to problem
1 piston rings worn or broken / replace
2 daft i know but air leaks/ when it is running you carn't hear a leak cos of the running noise,run it up as high as it will go switch off and listen /repair leak
3 sticking or passing valves , these are located in the cyl head /take filter unit off,run it when it comes up to 40 psi put your hand close to the inlet port if the inlet valve is passing you will feel a sort of chuff chuff on your hand ,switch it off ,if you can hear ,and feel air coming out of the inlet port the Exaust valve is leaking ,sadly these small comps are difficult and bloody expensive to get spares for"they want you to buy another one " so depending on the amount of use it has had it might not be woth while repairing hope this has been of some help
merlin v12

Aug 17, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Leaks air at the pressure switch


start your compressor and let it buid up pressure to turn off. then unplug from power.lossen the fill tube that goes from the pump to the tank. when you loosen it. if it leaks air then your check valve is bad and will have to be replaced.

Dec 25, 2008 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

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