Lifter Noise??
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 832
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From: Joplin Mo
Lifter Noise??
I just bought this 2000 with 41,000 miles on it. When you first start it, it sounds like a ticking lifter but I can't tell for sure. After driving it for awhile, the noise dissipates somewhat. I haven't tried changing the oil yet but I suspect that won't make much difference. The frequency of the ticking is about right for a lifter but I can't tell which bank its coming from. Any thoughts? If it is a lifter or associated mechanics i.e. rod, valve, are there any parameters in Autotap that could detect something out of wack?
BTW, did a search and couldn't find much on it.
[Modified by MikeyD, 11:38 PM 11/2/2003]
BTW, did a search and couldn't find much on it.
[Modified by MikeyD, 11:38 PM 11/2/2003]
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Re: Lifter Noise?? (MikeyD)
I hate to say it, but it may be piston slap. At least by your description is seems to fit. My 02 has a similar noise when started. I have been using some carbon clean to see if it will help and it has to a large degree been beneficial. GM part # for the cleaner is 12345515. Use it one bottle per tank for a few tanks and see if it helps. Best price I have found is GM Parts Direct.
Good luck.
Good luck.
Burning Brakes
Joined: Aug 2002
Posts: 1,090
Likes: 8
From: Indianapolis Indiana
Re: Lifter Noise?? (vettenuts)
:iagree:
My '01 has a mildly noticeable similar noise. My wife's '00 has it but louder. Several of the used cars that I test drove when looking for my wife's car had it. If you do a search you will find threads that discuss piston slap. Apparently a chronic problem of many C5s.
My '01 has a mildly noticeable similar noise. My wife's '00 has it but louder. Several of the used cars that I test drove when looking for my wife's car had it. If you do a search you will find threads that discuss piston slap. Apparently a chronic problem of many C5s.
Drifting
Joined: Oct 2002
Posts: 1,335
Likes: 76
From: Bedford Va.
Re: Lifter Noise?? (ndirishr1)
is this noise noticable from the drivers seat or only when the hood is up?
may only be the injectors. piston knock is much slower and deeper sounding than lifter noise.
there were some rocker issues-needle bearing fragments would be found in the oil.
may only be the injectors. piston knock is much slower and deeper sounding than lifter noise.
there were some rocker issues-needle bearing fragments would be found in the oil.
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 832
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From: Joplin Mo
Re: Lifter Noise?? (Mr. Jones)
Its a ticking noise that can be heard about anywhere outside of the car. It eventually subsides after running for awhile. I'll do a search on the piston slap issue. Thanks!
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
Re: Lifter Noise?? (MikeyD)
I would also try the carbon cleaner, I know it helped mine a lot. It was recommended to me by a C5 service tech. I am now on my second tank and yesterday's cold start, after three weeks of no use, was noticably quieter.
[Modified by vettenuts, 12:29 PM 11/3/2003]
[Modified by vettenuts, 12:29 PM 11/3/2003]
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 832
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From: Joplin Mo
Re: Lifter Noise?? (vettenuts)
Well here's a kicker. After sitting all night and all day today, I hopped in 'er this evening and fired 'er up. No ticking. Drove it to a store about 4 miles away, shut it down, went into the store, came back out and fired 'er up after sitting 10 minutes and the ticking came back. Revved it up a couple of times while sitting still and it went away for the most part. Came back home and the ticking stayed gone. :skep: After reading about the piston slap syndrome on previous threads, I'm wondering if I just have a stubborn lifter. I don't know. Anyway, I'm all for the cheapest route. What is the additive to the fuel that GM recommended for the carbonized piston theory?
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Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Re: Lifter Noise?? (MikeyD)
Well here's a kicker. After sitting all night and all day today, I hopped in 'er this evening and fired 'er up. No ticking. Drove it to a store about 4 miles away, shut it down, went into the store, came back out and fired 'er up after sitting 10 minutes and the ticking came back. Revved it up a couple of times while sitting still and it went away for the most part. Came back home and the ticking stayed gone. :skep: After reading about the piston slap syndrome on previous threads, I'm wondering if I just have a stubborn lifter. I don't know. Anyway, I'm all for the cheapest route. What is the additive to the fuel that GM recommended for the carbonized piston theory?
Please let us know how you make out.
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 832
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From: Joplin Mo
Re: Lifter Noise?? (vettenuts)
Thanks! Will-do. I'm going to slap in some of this stuff. I don't think this is as big of an issue as I originally thought but I was wanting to put my NX nitrous system back on this one (100 shot) and I didn't want to compound a real pending problem by shooting the juice to it! :crazy:
Part # 12345515
Please let us know how you make out.
Please let us know how you make out.
Drifting
Joined: May 2003
Posts: 1,755
Likes: 97
From: Sandy Utah
Re: Lifter Noise?? (MikeyD)
My 01 had the same noise. I had the short shaft seal replaced and took the car out for some "spirited" runs (120+mph) and I noticed that the noise was gone!! So, I am of the opinion that it is carbon buildup that causes it. :D :D
Burning Brakes
Joined: Dec 2000
Posts: 993
Likes: 5
From: Cincinnati Ohio
Re: Lifter Noise?? (MikeyD)
For the 2001 - 2003 C5's, read this TSB: http://corvetteactioncenter.com/kb/q....php?qstId=378
Melting Slicks
Joined: Nov 2001
Posts: 3,088
Likes: 1
From: NC
Re: Lifter Noise?? (Mr. Jones)
I believe what he meant is that he had some work done on the short shaft
(I'm assuming the rear axle) and when he took it out for a few high speed
runs, he noticed the ticking was gone indicating the cause was carbon buildup.
(Unrelated items)
And you can get a 4 pack of Techron at COSTCO for under $10.
My 2001 ticked in various degrees for 14,000 miles. I'm putting on
GHL exhaust so I won't hear it. :D
...George
(I'm assuming the rear axle) and when he took it out for a few high speed
runs, he noticed the ticking was gone indicating the cause was carbon buildup.
(Unrelated items)
And you can get a 4 pack of Techron at COSTCO for under $10.
My 2001 ticked in various degrees for 14,000 miles. I'm putting on
GHL exhaust so I won't hear it. :D
...George
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 832
Likes: 0
From: Joplin Mo
Re: Lifter Noise?? (1999 White C5 Coupe)
For the 2001 - 2003 C5's, read this TSB: http://corvetteactioncenter.com/kb/q....php?qstId=378
