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Generation III Internal Engine
GTO knocking...

Generation III Internal Engine 1997-2006 LS1 | LS6

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GTO knocking...

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Old

Dec 8, 2010 | 03:51 PM

#1

Thread Starter

Staging Lane

Joined: Jul 2009

Posts: 78

Likes: 1

From: BFE, Louisiana

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GTO knocking...

My friend has an 04 gto 6 speed...he said when he cranked it this morning that it clattered real bad and sounded like he was throwing a rod...said as soon as it warmed up it went away...any ideas as to what's going on? Had been sitting about a month so it may have lost oil in the heads but it did it again later that day after it had been driven about 30 miles and let cool all the way down...any help would be appreciated!

Old

Dec 8, 2010 | 04:00 PM

#2

TECH Fanatic

Joined: Jan 2010

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From: Euless Tx

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piston slap maybe? At least that's what it sounds like

Old

Dec 8, 2010 | 04:03 PM

#3

Launching!

Joined: Feb 2010

Posts: 277

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From: Shawnee, OK

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fo sho. on a real cold morning my car sounds like its knocking its *** off till it warms up a tad

Old

Dec 8, 2010 | 04:15 PM

#4

Thread Starter

Staging Lane

Joined: Jul 2009

Posts: 78

Likes: 1

From: BFE, Louisiana

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Dunno...my car doesn't do it...but who knows...is there anything harmful going on or just something the us ls1 guys have to deal with?

Old

Dec 8, 2010 | 04:21 PM

#5

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From: Euless Tx

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It's just the nature of the beast. Mine does it. And no, it won't hurt anything. It's just really annoying.

Old

Dec 8, 2010 | 05:10 PM

#6

Thread Starter

Staging Lane

Joined: Jul 2009

Posts: 78

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From: BFE, Louisiana

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thanks for the info

Old

Dec 8, 2010 | 10:02 PM

#7

Banned

iTrader: (8)

Joined: Jun 2007

Posts: 3,093

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From: san fernando valley, california

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some cars have that piston slap and some dont. does he have a delayed oil psi on start up?

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Old

Dec 9, 2010 | 04:34 AM

#8

Thread Starter

Staging Lane

Joined: Jul 2009

Posts: 78

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From: BFE, Louisiana

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I don't know...maybe...I'll check when I see him

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04, 05, 06, 2006, cold, engine, gto, knock, knocking, ls1, motor, start

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