I had marked my connecting rods and caps on my 2002 malibu 3.1 liter engine and had sent them to the machine shop to get new pistons pressed on. When I got them back all of my markings were gone. Does anyone know the direction of the piston rod in relation to the pulley end of the engine? Please help, lost lol.

 

Don't know it matters. You had to have wrist pins pressed in the connecting rods?

 

Yes new wrist pins