Lahoe5.3

Hey guys im new to this forum =D got reffered to this website thanks to some friends from Tahoeyukonforum the reason im here is to find out some info on my 5.3. I have a slight knock/rattle which i believe is being produced by a lifter if im wrong please tell me. Now i believe this problem started not long ago cause it would only do it at cold start, but as soon as it would get to running temperature it would go away. But now it seemes like the noise is there to stay. I opened up my oil pan to check if i spun a bearing but everything seems to be ok. Also my oil pressure gauge since i removed it has been acting up and not reading the correct oil pressure.

SOMbitch

iTrader: (8)

Post a clip of your noise but I have a sometimes noisy LM7 219K going strong so more than likely ok.....

kinglt-1

iTrader: (26)

the 5.3 in my silverado is the same way.

O2Form

prolly piston noise.....very common

Lahoe5.3

thanks for the reply guys and a friend of mine also told me it might be piston slap but yesterday i opened up my valve covers and the one on the driver side has signs of the rockers hitting it ''/ could it maybe be a pushrod??

O2Form

wow thats odd, what part of the rocker is hitting? Are the rocker support bolts tight?

Lahoe5.3

yes the rocker supports are tight and i know it really is wierd ill post a pic of it

O2Form

Check for cracked or broken springs.