No, when I talked about the operating the pump, I meant the hand pump. Once the engine is in the correct position, you will operate the hand pump and turn the IP just enough get the right drip. Don't forget to loosen the nuts.

Once the timing is set as I describe, then you will know where you're at. If it still does not run as it should then as wagger recommends you will need to check for chain stretch and advance mechanism in that order.

If it is a higher mileage engine that has not had frequent oil changese, you may very well have chain stretch.

Good luck,