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I purchased a used Hydro Tek SC Ultimate Series washer. It looks to have the original CAT pump on it and the pressure rating on the machine is 3400. WhenI bought it 3 months ago and tested it at the sellers house, the pressure gauge registered 3000 psi. Since then I've taken apart the plumbing and made it my own. The problem is, I've now hooked it all back up and I'm only reading 2000 psi on the gauge. Keep in mind that I've reconfigured and configured the hoses several times and it's been about 4 months that I've owned it. I've gone through several replacement parts on the burner and I've never really had a baseline to go on because of those issues. Does anyone have a "Procedural Checklist" for troubleshooting these kinds of problems?