I have been working on the engine in my blazer for a few weeks now. I started by getting a crank kit to put in it and replaced all the gaskets when I put the engine back together. I got everything put together and set the timing and got it started. I noticed that after I started it that I have a slight knock coming from somewhere on the driver side of the engine. I first thought it was from the fuel pump but I removed it and started the engine while it was off and still had the knock. The pistons and ring are in good condition the valves and push-rods look good. I adjusted the rocker arms to specifications listed in my Chilton manual. I am currently waiting on a rebuilt carburetor to arrive because mine sat for awhile and doesn’t want to work properly. My question boils down to what can be causing the knock in my engine.
1985 chevy blazer s10 2.8l v6