Clicking Sound

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Aug 25, 2011 | 05:02 PM

philcon99

Thread Starter

Instructor

Joined: Jul 2011

Posts: 215

Likes: 2

From: New Port Richey Florida

Clicking Sound

This weekend I started my C5 in the driveway and got out of the car to do something and I heard a clicking sound coming from the engine. My car is still under a service plan from the dealer. I called him and he is going to take a look at it on Saturday. He told me there may not be a problem and this normal for an engine that has not warmed up yet.
Is he blowing smoke or telling the truth.

Thanks,

Phil

Aug 25, 2011 | 05:13 PM

GeneT

Racer

Joined: Apr 2010

Posts: 299

Likes: 1

From: Punta Gorda Florida

if it sounds like a lifter, and it stops after a few minutes when the engine warms up a little, mine does that, and from what I read here on the forum, it is normal. Mine won't do it for several starts, then it will again. I have 31,000 mi on my '02 convert.

Aug 25, 2011 | 05:16 PM

PTBradford

Drifting

Joined: May 2010

Posts: 1,287

Likes: 2

From: Lubbock, TX........... God Bless Texas!

GM Piston Slap. Normal to the best of my knowledge.

Aug 25, 2011 | 07:11 PM

philcon99

Thread Starter

Instructor

Joined: Jul 2011

Posts: 215

Likes: 2

From: New Port Richey Florida

Thanks! That makes me feel better about the dealer. I'm not a mechanic and I want to make sure they take care of my baby!

Aug 25, 2011 | 11:28 PM

robert miller

Team Owner

Joined: Jan 2007

Posts: 29,063

Likes: 1,839

From: cookeville tennessee

Quote:

Originally Posted by PTBradford

GM Piston Slap. Normal to the best of my knowledge.

I was thinking here the 327 350hp was bad for the piston slap even when new off the floor. I have had a # of newer vettes not one had piston slap like you are talking about but the c2 327 350 motors.

May have a lifter going down if you bitch some with the dealer they will put a set of new ones in for you.... Robert

Aug 26, 2011 | 12:00 AM

clubtan

1st Gear

Joined: Aug 2011

Posts: 1

Likes: 0

Hi, I am new to this....just got my first vette. 2000 c5. had a clicking sound, took it to a shop, dude said definatly a $2500 lifter job. took the car to a friend of a friend (a gm guy) and in 30 sec. said it was the acc pully and belt. $70 bucks fixed! good as new!
Just sayin!

Aug 26, 2011 | 01:13 AM

andy46

Racer

Joined: Apr 2011

Posts: 415

Likes: 1

From: british columbia

You sure it isn't just the air conditioner cycling ?

Aug 26, 2011 | 02:03 AM

cdkcorvette7

Tech Contributor

Joined: Aug 2008

Posts: 2,902

Likes: 21

From: Oak Hill Virginia

There are some good guesses in here; but we really are just guessing without a sound clip or at least a little more info. It could be piston slap which is a fairly common issue but is not "normal" and should be addressed. If it's a ticking sound that increases in frequency with engine speed it could be as simple as an exhaust leak. It could also be a failing component in your valvetrain like a rocker arm. Could also be your a/c compressor clutch (not very likely based on your description). Are there any other symptoms? Do you have any DTC's present?

Record a sound-clip of the noise and upload it to youtube then post it in C5-Tech... Don't ever let a dealer get away with telling you something is "normal" that only just started occurring when you've owned the car for a while without the symptom. If you have a warranty, its a helluva lot cheaper for them for the problem to be "normal". The LS1 in your C5 should sound like a sewing machine running at high speed...