Pinging when accelerating
Thread Starter
Advanced
Joined: Aug 2005
Posts: 58
Likes: 0
From: Toronto Ontario
Pinging when accelerating
Hi everyone
I have a 2006 z51 6 speed. When I accelerate heavy, the car pings alot. It sounds like a pin-ball machine. I have had this issue since the beginning and dealer has been useless. The only thing the dealer is not useless is when you perform PAYING service work. Otherwise warranty work, they are useless.
It is very annoying. Anyone with any ideas would be greatly appreciated.
Thank-you
I have a 2006 z51 6 speed. When I accelerate heavy, the car pings alot. It sounds like a pin-ball machine. I have had this issue since the beginning and dealer has been useless. The only thing the dealer is not useless is when you perform PAYING service work. Otherwise warranty work, they are useless.
It is very annoying. Anyone with any ideas would be greatly appreciated.
Thank-you
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
Hope your running Premium gasoline. That could be it if your not. Check the spark plugs see how they look. Then look up on line what they should look like. Has the car been tuned? If so maybe a inferior job.
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
2006 owner's manual, page 5-5.
Gasoline Octane
If your vehicle has the 6.0L V8 engine (VIN Code U),
use premium unleaded gasoline with a posted octane
rating of 91 or higher. You may also use regular
unleaded gasoline rated at 87 octane or higher, but
your vehicle’s acceleration may be slightly reduced,
and you may notice a slight audible knocking noise,
commonly referred to as spark knock. If the octane is
less than 87, you may notice a heavy knocking
noise when you drive. If this occurs, use a gasoline
rated at 87 octane or higher as soon as possible.
Otherwise, you might damage your engine. If you are
using gasoline rated at 87 octane or higher and you hear
heavy knocking, your engine needs service.
If your vehicle has the 6.0L V8 engine (VIN Code U),
use premium unleaded gasoline with a posted octane
rating of 91 or higher. You may also use regular
unleaded gasoline rated at 87 octane or higher, but
your vehicle’s acceleration may be slightly reduced,
and you may notice a slight audible knocking noise,
commonly referred to as spark knock. If the octane is
less than 87, you may notice a heavy knocking
noise when you drive. If this occurs, use a gasoline
rated at 87 octane or higher as soon as possible.
Otherwise, you might damage your engine. If you are
using gasoline rated at 87 octane or higher and you hear
heavy knocking, your engine needs service.
Safety Car
Joined: Oct 2003
Posts: 3,644
Likes: 13
From: South of Boston MA
Had a 2001 that would ping under hard acceleration. Used Sunoco and it still pinged. Dealer checked for codes, timing etc, all was correct. I learned to live with it. It was good on gas, got 30 MPG on many long road trips. New owner is happy with it and no complaints about pinging.
One other thing to check would be the throttle body for carbon build-up. Good luck.
One other thing to check would be the throttle body for carbon build-up. Good luck.
Melting Slicks
Joined: Nov 2005
Posts: 2,345
Likes: 2
From: Houston 06 C6 Ysi SC 402 fgd TX
yeah sounds like the octane is not high enough. if you cant get any better gasoline then add octanium
http://www.octaniumpower.com/
http://www.octaniumpower.com/
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Safety Car
Joined: Dec 2006
Posts: 4,642
Likes: 9
From: Dalllas/Ft Worth Area TX
Ping only good in pong = Pingpong = table tennis, otherwise BAD!
Yep, try a few tanks with octane booster, it will take more than one to really get your tanks cleared out, then you will know about the gas, try different gasoline dealers also.
Only other thing after this is the tune or a sensor, etc. May have to look for a DIFFERENT DEALER. Timing could also be off!
Only other thing after this is the tune or a sensor, etc. May have to look for a DIFFERENT DEALER. Timing could also be off!
Last edited by 2006c6keller; Oct 21, 2009 at 02:28 AM.
Drifting
Joined: Oct 2005
Posts: 1,487
Likes: 4
From: WA
take it to the shop that has experience tuning LS motors and go from there. dealers will be useless until you are throwing codes (but they will be happy to sell you snake oil in buckets - system cleaner service, fuel filter replacement, etc)
Thread Starter
Advanced
Joined: Aug 2005
Posts: 58
Likes: 0
From: Toronto Ontario
thankyou for your thoughts. I have been using sunoco ultra 94. I try different stations different brands and still no luck. I have used 91, 92 from all kinds of brands.
The dealers opinion is that all vettes have pinging and that its okay. Buy I tend to differ. If I am on the highway and each time I accelerate the car sounds like a "PIN-BALL MACHINE", there is something wrong.
If I am using the right gas , what can it be mechanically??
Thankyou
The dealers opinion is that all vettes have pinging and that its okay. Buy I tend to differ. If I am on the highway and each time I accelerate the car sounds like a "PIN-BALL MACHINE", there is something wrong.
If I am using the right gas , what can it be mechanically??
Thankyou
Le Mans Master
Joined: Sep 2007
Posts: 8,285
Likes: 14
From: Iowa
thankyou for your thoughts. I have been using sunoco ultra 94. I try different stations different brands and still no luck. I have used 91, 92 from all kinds of brands.
The dealers opinion is that all vettes have pinging and that its okay. Buy I tend to differ. If I am on the highway and each time I accelerate the car sounds like a "PIN-BALL MACHINE", there is something wrong.
If I am using the right gas , what can it be mechanically??
Thankyou
The dealers opinion is that all vettes have pinging and that its okay. Buy I tend to differ. If I am on the highway and each time I accelerate the car sounds like a "PIN-BALL MACHINE", there is something wrong.
If I am using the right gas , what can it be mechanically??
Thankyou
Drifting
Joined: Feb 2001
Posts: 1,539
Likes: 63
From: new ulm mn
thankyou for your thoughts. I have been using sunoco ultra 94. I try different stations different brands and still no luck. I have used 91, 92 from all kinds of brands.
The dealers opinion is that all vettes have pinging and that its okay. Buy I tend to differ. If I am on the highway and each time I accelerate the car sounds like a "PIN-BALL MACHINE", there is something wrong.
If I am using the right gas , what can it be mechanically??
Thankyou
The dealers opinion is that all vettes have pinging and that its okay. Buy I tend to differ. If I am on the highway and each time I accelerate the car sounds like a "PIN-BALL MACHINE", there is something wrong.
If I am using the right gas , what can it be mechanically??
Thankyou
Le Mans Master
Joined: Sep 2007
Posts: 8,285
Likes: 14
From: Iowa
Is it stock? If so, I have a little pinging on acceleration on my '07. Like you said, all the dealers are worthless with this problem. Finally talked to Tom Hill from GM at MidAmerica's Fun Fest and he admitted, that some LS2s have pinging and that there really wasn't anything you could do with a stock engine and stock tune. If it excessive though, you should do something as damage will be done.
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
Maybe the knock sensor is defective. It should be telling the computer to pull the timing if it detects detonation. It could also be hot spots in the combustion chamber causing the fuel to detonate before the plug fires.
Mark
Mark
Safety Car
Joined: Apr 2006
Posts: 4,254
Likes: 5
From: Anaheim Hills, Ca
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 461
From: Southern Utah
Putting in octane booster is just treating the symptom....the LS engine should be able to run on any old premium gas and if it doesn't, then it needs fixing. Knock sensor would be my first suspicion.
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
If you bought the car new and it has been doing it since you've bought it I would have the cylinders bore scoped to make sure there is no internal damage to the pistons and if there is have them fix it while it is still under warranty.
Mark
Mark
Racer
Joined: Jan 2001
Posts: 357
Likes: 2
From: San Diego ,CA, USA
Does your LS2 consume a lot of oil? I am wondering if carbon build up is responsible. Carbon in the cylinder increases compression and can glow white hot. This heat can and does ignite the AF mixture separate from the spark plug creating a ping when the two flame walls hit.
If so there are liquids you can add to reduce the cylinder carbon. It's been a long time but when I was a GM mechanic (before Mr Goodwrench was born) we used to SLOWLY poor Marvel Mystery Oil down the throttle and it would do its de-carbonizing magic. I still see Marvel Mystery oil at stores like Wal Mart.
Just a possibility.
If so there are liquids you can add to reduce the cylinder carbon. It's been a long time but when I was a GM mechanic (before Mr Goodwrench was born) we used to SLOWLY poor Marvel Mystery Oil down the throttle and it would do its de-carbonizing magic. I still see Marvel Mystery oil at stores like Wal Mart.
Just a possibility.