Originally Posted by transitguy

Hi Folks , long story , I was changing the timing chain on a 617 and lost tension on the chain requiring re-timing of the cam to TDC . I have the cam timed now but in trying to check the IP timing the pump is acting peculiarly The fuel line from the pump to the #1 injector is removed , the delivery valve removed ( spring taken out ) and delivery valve replaced . This should allow me to see when the fuel begins welling up in the delivery valve ( should be approx. 23-25 BTDC ) but when I pump up the pressure with the primer pump fuel squirts out of the delivery valve in a stream . Yeah, I know it seems crazy, but that's just what it does. Keep the faith, keep turning slowly, when you get to the drip point it's very noticable and pretty cool I thought - and very repeatable. After you see it, rotate nearly 2 full turns and see it again. You really can nail it to 1 degree. Also is it possible that I'm wasting my time and the relationship between the crank and IP were undisturbed by my screw-up ?