Another 4.2 problem. . .
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Another 4.2 problem. . .
Ok I bought a 98 150 with a blown 4.2. When I tore into it I found out that it Hydro locked with a blown intake gasket. It snaped the #1 piston rod and bent the #2. The #1 piston was almost at TDC when it snapped and the valves were slapping the top of the piston. So I bored it and completely overhauled it. When I was putting it all back together I didnt get new push rods I just rolled them on a flat table to check for bends. I didnt see anything so I put the old ones back in. When I first started the motor for the first time everything sounded fine but today when I started it there was a slight tapping sound under the valve cover. Same side as the snaped piston. Im wondering if I didnt bend or put in an already bent push rod. I have never heard what a bent push rod sounds like and I was wondering if anyone has had any of the same problems or has some suggestions on what it might be. Before I tear into it again. Thanks for all the help!
