u/Different-War-2390

Making a knocking noise some say injector,up pipes,lifter and I’m not sure what to believe

Has no shavings in oil,no misfire,no popping through the intake,no loss of power nothing,just a chirp but I can hear it from the top of the engine and I have a code on my scanner for a contribution on said cylinder. Ficm has good voltage has good oil pressure but when I cold start it it cranks for 6 seconds or so and that’s in 60+ degree weather

It also gets louder the warmer the engine gets