concerned

[shepss217]

just bought a 2002 z28 and when i start it cold it has a slight knocking noise coming from the passanger side, it starts off kind of loud then quiets down after it warms up but doesn't actually go away, can anyone diagnose my problem? the car only has 66,000 miles on it

[Dr.Crash]

these motors are loud bitches. your probably fine. post a vid on youtube and link the page. im sure its normal

[Camaro98Z/28]

lifters probably pumping up

[67CamaroRSSS]

Piston slap?

[Z28Thunder]

Both of the aboev are common on the LS1... Lifter noise or the slapping piston. There was a service bulletin on the slap. But even when they were under warranty it was a PITA to get GM to honor that service bulletin.

[Dr.Crash]

Both of the aboev are common on the LS1... Lifter noise or the slapping piston. There was a service bulletin on the slap. But even when they were under warranty it was a PITA to get GM to honor that service bulletin.

hey is that the sunoco hood? that thing looks sick..

[1998z28]

mine does the same thing i wouldn't worry about

[Z28Thunder]

hey is that the sunoco hood? that thing looks sick..

Yes VFN sunoco...

[Dr.Crash]

Yes VFN sunoco...

that things awsome i think i was just drooling

[Y2KPewterSS]

that things awsome i think i was just drooling

He is my neighbor and best friend, it is drool worthy

[Z28Thunder]

that things awsome i think i was just drooling

Dont want to whore his thread but

http://www.ls1.com/forums/showthread...ght=VFN+Sunoco

http://www.ls1.com/forums/showthread.php?t=62938

And now back on topic.

[Dr.Crash]

He is my neighbor and best friend, it is drool worthy

if i ever grow a pair and buy that APS TT system that is the hood i want. for sure

[Z28Thunder]

if i ever grow a pair and buy that APS TT system that is the hood i want. for sure

I like N/A myself... I dont need any of that FI stuff to run the same times..

[Dr.Crash]

I like N/A myself... I dont need any of that FI stuff to run the same times..

i like all motor too, but is that enough? i havent really even gotten into mine and i already want more power

[JustOut4u]

thats just piston slap. 90%, if not all ls1 make that slapping noise on cold start ups. Quits after a min or 2. Nothing to worry about.