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Wont build pressure

My grago seems to be malfunctioning .. its not building pressure when I switch it to spray . And if it does the pressure it way too high and the motor keeps running or the pressure completely drops and watch dog says its empty

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I have a CH HJ 300200 that will not build pressure, there seems to be pressure building in the tank but the Pressure gauge does not move. I removed the pressure line going to the tank, it gets hot and...


I would remove the pressure gauge and check the bottom of the air gauge fitting. The small hole at the bottom of the gauge fitting may be clogged. Sometimes when the pressure gauge is installed a piece of Teflon tape (used to seal the threads) can get lodged over the pressure gauge air port.

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Why wont my steelcraft 13 gallon 5hp model ta25 build up no more then 20 pound of pressure and all i did was change the oil?

Check all connections for air leak including the water drain valve with soapy water. If no air leaking from connections, spray soapy water on head area where head attaches to the cylinder checking for gasket leaks. If no leaks are found, most likely problem is in the head /valves /internal gasket leak. If head gasket or valves are leaking, you will notice that air seems to blow out of the intake filter (normally there is good suction at the intake). Good luck

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It doesn't take much residual paint to dry out in hose and block it.Have you lowered the paint pressure?
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Wont spray

I hope the engine wont spray... if it's a pressure washer thats not spraying the name of the unit would help... but does it build pressure but doesn't spray - check the wand
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The pressure relief valve is sticking open.

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Hitachi ec89 will not shut off

IF it is building up to the correct pressure then the pressure switch has malfunctioned. The part number for a new switch is 160580.

Parts and owners manuals are located at this link near the bottom of the page;

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1 Answer

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Stuck caliper or defective brake hose( internally) are both possibilities.

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Have 2002 grand am that I have not driven in about a month and went to go use it and it will crank over but wont start. The battery is fully charged, checked the fuel relay switch it is good and there...

replace fuel filter than check fuel pressure because it started when u sprayed it so ur problem is in ur fuel delivery -if fuel pressure is still low or none check connection at fuel pump sometimes corrosion builds up between connections if good and full power and no pump pump failure and need to replace good luck

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1 Answer

Husky comp on 1st start builds up 75 lbs and wont restart

Check the reset button on the motor to see if it tripped. The motor may be overheating. Some motors have an internal breaker and they have to cool off before they restart. Also check the pressure switch. Move the switch back and forth ( on and off ) and listen for a click. If it doesn't click with low to no air pressure then the switch is bad.

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1 Answer


Many craftsman compressor are built by champbell hausfeld using a dry type of cylinder and piston (no oil, no crankcase). If dry type, check for worn cylinder and piston ring. Pieces of the vinyl ring can jamb between the reed valves in the head causing air to escape from the intake. If your compressor has a crankcase and oil, check for broken reed valves in head. Spray soap solution on hoses, checkvalve, drainvalve, and fittings to check for leaks. Most likely problem is reed valves broken or open. Parts are available from sears or match parts to enjoy

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