I have recently replaced my water pump on my 88 isuzu tropper 2 pick up truck "OH MY GOD" I wont start..... I finally got it back together and past my pressure test. But I beleive because its running like crap I may have messed the timing up. it starts up and makes a knocking noise and all of the dash warning lights light up then it dies if i dont give it gas. Question is Could it be something else making it act like that? also when I turned it over by hand, after i installed the water pump it would be sooth about 3/4 of the way around then it would get a little tougher to turn about 1/4 of the way around then sooth again. IS this normal? thanks alot