emglo air compressor hissing

by taylor rental
(north kingstown r.i. usa)

Emglos twin cylinder portable air compressor

Emglos twin cylinder portable air compressor

hello we have a 1988 emglo model w twin cylinder compressor


when you turn it on it hisses air stops hissing then hisses again and stops it will do this 3 or 4 times then pops the breaker when the shop warms up a bit

then it turns on and runs fine im stumped any info would be greatly appreciated thanks rich
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Rich, not knowing where the air is hissing from makes this hard to diagnose. And, don't necessarily think that the compressor popping the breaker is part of the air hissing problem. It may not be, bu then, it might.

What is the temperature in the shop when you try to get the compressor going first thing? If it's near freezing then that could be the issue. See the troubleshooting page about starting compressors when it's cold.

Can you tell if the air is hissing from the pressure switch unloader valve?

Bill

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Jan 31, 2014
hissing
by: rich

yes that would help

well i went up to the compressor and had another person turn it on and found that the hissing is coming from the horizontal air line coming out of the comp. side cover

its not leaking oil and is tight it only does it when cold and the breaker pops

when it is running fine there is no air leaking out of the air line on side cover very strange!
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How cold is it in the shop when you try to get it going?

B.

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Air compressor is blowing air pressure out instead of sucking in

by Fawn
(PA)

Air compressor is blowing out instead of sucking in. Will not build pressure over 60 psi it's a LC serial number 011685118
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Well Fawn, that suggests that your intake valve has failed somewhat and when your compressor tank pressure reaches 60 PSI, the valve reacts, and allows air back out the intake instead of the intake valve closing and driving the air down into the tank.

You will need a valve kit, and if you get that, make sure that it has a gasket kit as part of it, so you change out both when you have torn the pump down.

Cheers,

Bill

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May 27, 2013
Problem solved
by: Fawn

It was a burnt gasket. Thank for answering.
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Glad to hear you got the problem resolved.

Bill

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3hp emglo electric compressor slowing down

by Jeff
(NJ)

I have a 3hp emglo electric unit, as my compressor builds pressure it starts to slow way down as if it was going to stall. any thoughts on what is causing this
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Where is it plugged in, how long is the extension cord you are using, how old is your compressor, how much use has it had, is this a new symptom or has it always done this... just some of the info I need to try to make a best guess about your Emglo air compressor problem, Jeff.

Please provide more info as a comment here.

Bill

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Air line pressure slow to build back to regulated pressure

by Jim
(Raleigh, NC)

On initial startup the tank pressure builds to 150 PSI and the line pressure is at 100 PSI.

I drive 3 trim nails and the line pressure drops to <80 while the tank pressure remains at 150 PSI.

Over the next minute the line pressure will slowly build back to the 100 PSI but it takes much longer then when the unit was new.

Does the regulator need repair or could the issue be elsewhere?
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Hi Jim.

My money is on the regulator being wonky. I've just been doing a job with an air brad nailer and three or four shots shouldn't even make the line pressure twitch more than a few PSI.

Something is blocking the air flow from the tank into the line, and since there is typically nothing else in the flow path between the tank and the air line but the regulator, that's your suspect.

Good luck in finding parts for the regulator from your Emglo. Where you bought the compressor might have parts, but I doubt it. Probably easier to acquire a new one.

Cheers,

Bill


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