Normal differential pressure on KE-jet engines w/ EHA is .4 bar (5.8PSI); adjusting it slightly higher (.45 bar/ 6.5PSI) will allow for fuel distriburor wear on high-mileage vehicles. I have found that your first time adjusting should be 1/4 turn clockwise; proper adjustment will almost always be right on or within 1/16 turn. you will likely have to readjust the CO mix to compensate.

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