At 11:34 PM 3/18/05 -0000, you wrote: >I think the item that causes the biggest problem for injectors are the clack >valves. The balls should have a diffrent lift for either pump or injector - Andy Which one to which? Regards, Harry MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.