1BAD_LS1

iTrader: (36)

check your plugs and check for exhaust leaks.... would be my guess

just dont ignore it! Dont ruin your motor!

Z28LS1camaroguy

iTrader: (3)

the evap canister is located next to the drivers side fuel rail, its the black canister that your fuel lines run to, and the other side runs to the front of the intake manifold. Check it by running your car and putting your hand on it, you can also move the canister itself and feel if it is ticking. Simple and easy to replace, go to autozone they call it a purge canister selinoid. its only 22 bucks and just unplug the other one take the lines off it and replace.

90TSiAWD

Not it.

90TSiAWD

Update after running it with the GC it went away it was the damn RP.

MonmouthCtyLS7

iTrader: (6)

dude you want us to listen to it but you keep reving the car lol.

OffspringZ28

iTrader: (8)

royal purple?

alamantia

iTrader: (10)

I have that noise, it goes away when it warms up

firstinlastout86

iTrader: (4)

Piston slap...join the club

Ls1Rook

iTrader: (1)

whats the gc and rp

wbb

thats what i was wondering mine got worse tonight after a oil change with mobil one??? was faint typical ls noise then made a small pass and heard it im bout to tear the valve cover off tomarrow and check some **** out im worried tho my motor is a 6.0 with 317 heads and comp cam another thing i was wondering is my car is speed density??? just got it 4 days ago lots of parts but new to the ls stuff???

CaliboyTA

iTrader: (2)

yep, when i use royal purple oil i get alot of valvetrain noise. My opinion, i think redline oil is the best oil out there.

Rychen

iTrader: (6)

lol, revived a thread from the dead.

wbb

found out i have a rocker or two that pulled loose gonna try to heli coil them tommarow.....needed answers had to revive the thread some of us are blessed with these fine automobiles. And are on a budget....lol

Rychen

iTrader: (6)

I hear ya Brotha and your speaking my language....sometimes TOO TIGHT of a budget....haha