Isx Crankcase filter sensor high pressure

[Nilao]

You have to use a pressure tester and run it up to 20psi. Then let it sit to see how much pressure you lose. If you lose any you have to find out where it is going. Like others have said, I would pressure the salesman to replace it or refund your money. This is going to wind up putting you out of business in quick order unless it something simple which I'm beginning to doubt.