I don't know if the car made this noise prior to me putting the Zpi Crank Pulley on. Yssterday when I had my hood opened, I hard some sort of knocking noise from the engine compartment, I couldn't pinpoint where is was coming because it was really random. The noise went away after awhile. I dont know if it's the crank making that noise due to it not have the Oem heavier crank pulley. Any of you heard this noise?

 

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