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Don't know exactly why, but you have a restriction in the air outlet. Yes, it could be the regulator...or a kinked or defective air hose. Check the regulator...if you have previously removed it for proper direction of flow. There are small cast arrows on the regulator indicating proper air flow direction. Foriegn matter, dirt, or teflon tape may inhibit the flow at the regulator or a fitting. If the unloader tube was replaced as originally done I cannot think if how that could affect the flow....as you say the regulator is reading full pressure. And full pressure is getting to your tool...it is only the flow that is restricted. Take the regulator off the system to test your air flow and confirm a restriction at the regulator, if neccesary.
Yes, you can buy a compressor from numberous places.
I like Harbor Freight and Northern Tool...they have some good choices of just compressors.
Check them out.
Please take time to rate me
There is a small valve on the pressure switch that should relieve the pressure between the compressor and tank check valve. Make sure when pressure switch trips, it engages the relief valve and it bleeds the air out. Sometimes the valve itself comes loose and is not engaged by the lever in the pressure switch.
IT depends on the tool. Some tools require higher cfm. (cubic feet per minute) of air. IF your air line is not large enough, then sometimes 90psi is not enough to operate a tool as there is a pressure drop at the tool. Look at the required cfm for each tool. Find a chart for air line size, cfm and pressure. Most impact wrenches should be used on a minimum 3/8" air hose. You could look at your manual and see what the max pressure is on your compressor. You may be able to decrease the differential pressure e.g off and 100 and on at 90, but then the compressor will cycle more frequently, and may exceed the duty rating of the compressor.
Here are a couple of things to check. While the compressor is running spray soapy water on all airlines, fittings, bottom of pressure switch, regulator and drain valve to make sure that they are not leaking. A small leak will prevent the unit from reaching cutout limit. Repair as needed. Next unplug compressor and remove cover to expose cylinder and piston. Move piston to top of cylinder and check for scratches or wear neer top of cylinder. If scratched, air is bypassing piston ring and will not reach cutout pressure. If cylinder looks good and no leaks then problem most likely is valve plate/ reed valves or head gasket. Problems within head will cause low pressure and air line to tank will be very hot. Bad reed valves will also cause air to blow out of intake when it reaches 75 to 80 psi. Parts are available at www.chpower.com or at www.toolpartsdirect.com. Good luck
Hi, I suspect the plunger for the valve stem connector on the pressure head is not depressing the air release pin in the head of the valve stem.
I have a Black and Decker and have to use a valve stem seat removal tool to quicky unscrew about 3 to 4 turns the stem seal and then connect the air hose head. After the tire reaches the correct air pressure I have go thru the tighten the valve stem seat drill.
You can buy the vavle stem seat tool at any auto parts store. I keep mine with the compressor.
I don't want this to sound bad but... is the air hose supply vavle turned on? Some have a slider button on the valve you have to push to charge the hose. If the hose is charged then see above.
your regulator internal filter could well be blocked ,isuggest that you drain the tank fully and remove you regulator,check that tank is clear of rust or scale if all is clear then strip and clean your regulator
assembly or replace with new,problem should be gone all the best
this might be a silly question but the needle on your pressure guage couldnt be stuck?,have you drained your reciever?