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Discussion Starter · #1 · (Edited)
New here. I hope I’m in the right place? Okay. I have a Simpson pressure washer(model PS60841-3300 psi/2.5 gal pm AAA triplex) I purchased from Lowe’s a few years ago that has lost presssure. I did some research and was thinking an unloader valve. Bought a new one and that wasn’t it. So. I tore into the pump manifold and could see a broken check valve. Bought 6 new check valves and replaced them. Everything went back together uneventfuly. Had the high pressure hose off to do the work. Turned on the water only to prime pump. Water came out high pressure hose connection as it should for about 3-5 seconds then stopped totally. I decided to start engine for a couple of seconds. Nothing. It was a long hot day. Rolled it in garage and walked away. Ideas,input, questions accepted. 🤷‍♂️
 

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spark test first make sure you still have spark
make sure you still have fuel, and the fuel valve is on.
check the engine intake and exhaust valves settings.
also check the exhaust screen.
then remove the spark plug and check the compression.
needs to be 90 psi or higher.
 
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