Question about Craftsman 1 Hp, 4 Gal. Air Compressor

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Air pressure gauge does not move on Craftsman 1Hp, 12 Gal. Air Co

I have a 12 Gal., 1 Hp, about a year old used very little. The pressure gauge does not move but when I take the plug out of the inlet to the tank it seems to be pumping air. I let it run for 15 min. and the gauge never moved.

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I would say that the gauge needs to be replaced. These are common items so go to any auto parts or craftsman hardware store and purchase a replacement.

be sure to use some joint compound or teflon tape on the threads so u dont have any leaks.

please rate my answer. thanks.

Posted on Feb 03, 2009


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Posted on Jan 02, 2017


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Got a trauma ultrastore water heater in my bailey senator caravan water is coming out from either overflow/pressure value or maybe a leak can anyone advise on how to try and sort this out

There is no overflow pipe on the water heater. There is an overflow/vent pipe on the fresh water storage tank though. It is normal for this to leak water at times.

Its possible you might have some type of winterizing hot water tank drain. But that should have a valve on it. If you have such a valve it should be shut off and not leaking.

That said we move on to the water heater. This is assuming you have a water heater leak. Or a leak with something connected right at the water heater.

You could expand this concept to move on to other pressured parts of your plumbing system to troubleshoot and isolate.

I would remove the pressure relief valve and rig up a fitting you can screw in. Set up with a pressure gauge and a air filler fitting like is on an inter-tube/tire. Some plumbing stores sell them already made up.

You might have to custom adapt this using some rubber hose rated for air compressors. Using barbed to threaded fittings and hose clamps to withstand pressure.

Install your air valve/gauge in place of the relief valve. If you have bypass valves this is a little easier. Close off the bypass valves to isolate the tank from the plumbing system.

If your plumbing set up has no bypass valves, disconnect the inlet and outlet plumbing lines. Screw in appropriate sized plugs in the two tank holes. Use teflon tape and make sure they are secured. (All easier said than done).

With an air compressor or tire pump pressurize the tank to 50psi. Soap all fittings, and your plugs, to insure you have no leaks around anything screwed in. Let this sit overnight. If your pressure drops off you have a leak. If your pressure holds I would suspect the relief valve that you removed.

You could move your air valve/gauge set up to the water inlet or outlet pipe and reinstall the relief valve, to test the relief valve. Pressure up to 50psi and soap everything again. Let it set overnight again.

If you suspect the relief valve before any of this troubleshooting starts, you might just start by installing the air valve/gauge in the inlet or outlet right from the get go.

Tanks often get pin holes on the bottom as they start to corrode through. Hard to visually find in many cases. Pressurizing with air will tell you whether you have a leak for sure. Not get everything wet in the process. Using common sense and a process of elimination, you should find the problem. There are also drain valves and in some cases anode rods that are screwed into the tank and may be a source of the leak? Soap all of these while troubleshooting.

The image is my setup. It is a little more fancy than described. I have a little valve off a T so I can use the little turn wheel and open the valve to relieve pressure without unscrewing everything. That also beats holding in the little spring loaded needle valve of the "tire filler" valve shown sticking out the right side. But I think you will get the idea of the basic concept?

May 23, 2017 | RVs

1 Answer

Exmark lzs749akc724a1,uses 2-4 gal of gas then will sometimes shut down. Fuel gauge shws empty but has a 12 gal tank will only take 3-4 gal.

Fix or replace the fuel gage sending unit in the tank. Pull it out and bend the tang/rod of the sending unit up and away from the bottom of the tank. Apparently the gauge is connected to the electrical and when gets to the E on the gage will shut down. Its a manual/physical problem overriding the good electrics of the system.

May 12, 2017 | Cars & Trucks

1 Answer

The drain plug on my Porter Cable pancake compressor leaks so badly that it no longer build pressure. The compressor is just a little over 1 year old and I have always drained the compressor after each...

Yes...the drain valve on the bottom of the tank is just a standard 1/4 Drain Pedcock that you can purchase at most hardware store.
You can also find these in the hardware section of Lowes or Home Depot where they sell the Air Compressors.

Oct 24, 2010 | Porter Cable C2002 150 Psi 6 Gal...

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After filling my fuel tank, gauge does not go to takes a few days or hours for gauge to read full

There is a TSB on high sulfur fuel usage, and how it impacts the fuel level resistance.
If you change fuel, it might start working again. The TSB is : ERRATIC FUEL GAUGE OPERATION TSB 08-2-9

Publication Date: January 22, 2008
FORD: 2004-2008 F-150
LINCOLN: 2006-2008 Mark LT

Some 2004-2008 F-150 and 2006-2008 Mark LT vehicles, built before 12/3/2007, may exhibit erratic fuel gauge operation or illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0460 or P0463, and/or Instrument Cluster Module DTC B1201. This may be caused by sulfur contamination in the fuel causing an open or high resistance in the fuel level sender.

Follow the Service Procedure steps to correct the condition.


Install a new fuel level sender following the service procedure instruction sheet provided in the fuel sender kit.

8L3Z-9A213-E Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-26 Gal Tank - 126/132" WB )
8L3Z-9A213-F Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-30 Gal Tank - 139" WB)
8L3Z-9A213-G Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-27 Gal Tank - 145/151/163" WB
8L3Z-9A213-H Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-36 Gal Tank - 145/151/163" WB
8L3Z-9A213-A Kit - Fuel Sender (2004 through 2008 - Gas-26 Gal Tank - 126/132" WB
8L3Z-9A213-B Kit - Fuel Sender (2004 through 2008 - Gas-30 Gal Tank - 139" WB
8L3Z-9A213-C Kit - Fuel Sender (2004 through 2008 - Gas-27 Gal Tank - 145/151/163" WB
8L3Z-9A213-D Kit - Fuel Sender (2004 through 2008 - Gas-36 Gal Tank - 145/151/163"WB

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

080209A 2004-2008 F-150, 2006-2008 Mark LT: Install New Fuel Level Sender, Includes Time To Remove And Install Fuel Tank (Do Not Use With 9002A, 9002A4, 9002A6) 1.9 Hrs.

9A299 42

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1 Answer

My compressor runs way too long to fill up to 150 PSI. It fills up quick to 120 PSI then just takes forever to get to 150 but finally does. It's only 1 year old with very little use. 17 gal, 1.1 horse,...

The pressure switch should be at the factory setting of about 120# max. Not to be hurtful,but what you discribe is normal. Even a 2 HP 220V is minimum for a compressor.. You go by the CFM Rating. You and I can not afford a two thousand dollar 12 CFM Unit. Your compressor is simply too small, to do much. It is pushing against tank pressure so much,after 90# that the reed valves can't hold it. Set it at 100 to 120. It is not designed to run up to 150 max. Now if it is,an oiless compressor , it won't last long. My Campbell- Hausfeld lasted 31 years. Got a new one two years ago

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1 Answer

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Does it shut off at 25 psi or just keep running and never build more pressure than that? Also, did this come on gradually or suddenly? Also, was it being used regularly when it happened or had it been sitting for a while?

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Craftsman 3 Gal. Air Compressor 1 HP Hortiz

Does it run? Does it stop running? Does the pressure gauge read anything at all? Is there a regulator on it? Can you take the reg off? A bunch of things to check, get it running and let me know what you find, and I will try to tell you what's next.

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1 Answer

89 Ford F150 shuts off when put in gear.

After sitting 2 years, there must have been some fuel in tank that has probably gone real bad (like shellac) and contaminated the fuel system, plugged up filter etc. Usually rust will form in tank, mixed with stale fuel, it will turn just like mud.

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