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International Automotive Technicians Network
Re: 97 4900 code 333
Posted to HD/Fleet Forum on 9/20/2013

A 333 will set on a running engine and default values might be used.

Can you run a KOER test and see if the system has the ability to build the 2500psi at idle? The KOER test will do this automatically and compare to desired, IPR% during this test on a good ... Login to read more.