The dreaded PING!
Thread Starter
Racer
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
The dreaded PING!
My 01 C5 pings a little when I accelerate hard, sometimes. I've been using injection cleaner evrey 3000 miles. I had Chevy do an injection service and it seemed to get a little worse. The car has 30,000 miles. I bought it with 10,000 on it. I just ordered a fuel filter and am hoping this may do the trick. I am running a Blackwing and flowmasters. I also have the fog light housings cut open. I am thinking the car is getting too much air or not enough fuel. I have'nt touched the wires or plugs yet. What do ya think?
Safety Car
Joined: Jun 2003
Posts: 4,510
Likes: 240
From: Coconut Creek FL
Originally Posted by allmee
My 01 C5 pings a little when I accelerate hard, sometimes. I've been using injection cleaner evrey 3000 miles. I had Chevy do an injection service and it seemed to get a little worse. The car has 30,000 miles. I bought it with 10,000 on it. I just ordered a fuel filter and am hoping this may do the trick. I am running a Blackwing and flowmasters. I also have the fog light housings cut open. I am thinking the car is getting too much air or not enough fuel. I have'nt touched the wires or plugs yet. What do ya think?
It still has pretty low miles to have this issue...I would suspect your fuel choice rather then too much air into the engine...I had a similar (aka running like crap) issue with my 97 buying Citgo fuel 93 Octaine. I switched to Chevron with Techron and the engine has never run so smooth. it took about 1 and a half tanks to get it really smooth...but the first half a tank stopped all the pinging issues.
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
Is it throwing any codes?
It might not be predetonation....
C5's are prone to an H pipe rattle that is often mistaken for engine ping (knock)
If you are not throwing any codes... change your H pipe for an aftermarket X pipe.
It might not be predetonation....
C5's are prone to an H pipe rattle that is often mistaken for engine ping (knock)
If you are not throwing any codes... change your H pipe for an aftermarket X pipe.
Thread Starter
Racer
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
I am using Shell 91 oct. , 91 is the highest here in Vegas. Maybe I'll try Chevron. The noise is definately a knock and I am getting no codes. What type of plugs should I use when I get to changing them?
Thanks!
Thanks!
Safety Car
Joined: Jun 2003
Posts: 4,510
Likes: 240
From: Coconut Creek FL
Originally Posted by allmee
I am using Shell 91 oct. , 91 is the highest here in Vegas. Maybe I'll try Chevron. The noise is definately a knock and I am getting no codes. What type of plugs should I use when I get to changing them?
Thanks!
Thanks!
Pro
Joined: Jan 2003
Posts: 526
Likes: 0
From: Tampa fl
Try putting the factory air box w/paper filter back on the car and see if the ping gets better or stays the same. I had this trouble with my wife's 01 after I installed an open lid air box cover with k&n filter. After I re-installed the factory stuff the ping was much less of an issue. This is a simple experiment that will cost you nothing but a few minutes of your time. If this does nothing then your next step may be to seek the advice of a custom tuner. I think some of our cars do this because of the "one size fits all" generic factory tune. And we all know that each car is in fact different and have different tuning requirements.
Instructor
Joined: Oct 2005
Posts: 176
Likes: 0
Originally Posted by Shane_S
New plugs/wires might be a good idea as the factory plugs are junk.
Shane
Yes, I agree, what octane you running?
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Drifting
Joined: Nov 2004
Posts: 1,295
Likes: 35
From: Brampton Ontario
Originally Posted by michael wyborny
I've actually heard that the stock wires are top notch.... anyone else want to chime in on this?
Yes, I agree, what octane you running?
Yes, I agree, what octane you running?
Advanced
Joined: Oct 2005
Posts: 77
Likes: 0
From: San Jose CA
I would also suggest trying the factor air box again. The mfa sensing elements should be cleaned with isopropyl alcohol or electronic cleaner to remove any oil contamination from the Black Wing filter. Just spray cleaner on the sensing elements and let air-dry. Avoid toching the elements.
Thread Starter
Racer
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
Thanks for all the info! I just filled up with Chevron super and will see if this makes a difference. If not, I will try the stock air box, although I have a K&N for that also and the hole in cover has been cut larger. If I get to that point I will clean the MAS as described!!
Grazie!!
Grazie!!
Burning Brakes
Joined: Feb 2001
Posts: 793
Likes: 2
From: Milwaukee & Long Beach WI & CA
Look through the throttle and see if you have oil in the intake. You maybe sucking oil into the intake through the PCV and the oil is getting burned up, leaving carbon deposits in the the heads. The carbon deposits become hot spots and can cause preignition. Follow the decarb procedure in the the C5 tech tips to clean it.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Chevron gas is the best gas to run in the C5, everyone uses it. I have the Delco Iridium plus and the Delco wires. Iridium plugs are what is recommended for the C5s. They are preset at.040 and are highly recommended not to reset them to the .060 that was standard for the C5 plugs. You can also try a couple of cans of Techron to your fuel. This has helped others. Someone also mentioned cleaning the MAF screen because of oil from the Blackwing filter, that to may help.
Good luck..
Rsty
Good luck..
Rsty
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Originally Posted by mathia
Look through the throttle and see if you have oil in the intake. You maybe sucking oil into the intake through the PCV and the oil is getting burned up, leaving carbon deposits in the the heads. The carbon deposits become hot spots and can cause preignition. Follow the decarb procedure in the the C5 tech tips to clean it.
Good luck..
Rsty
Drifting
Joined: Mar 1999
Posts: 1,250
Likes: 1
From: Greensboro NC
I sometimes have the ping too. Mostly when the gas is old and I haven't driven the car much. the more you drive the car the less ping I get. And keep fresh gas in there. STABIL also helps in my car.
Drifting
Joined: Jun 2002
Posts: 1,847
Likes: 1
From: Iowa
Cruise-In IV Veteran
Cruise-In V Veteran
I have a stock '04 A4 coupe. It never "pinged" until I put the Blackwing on. Put the factory airbox back on and the ping stopped. Re-install the Blackwing, ping is back again.
I finally got tired of all the nonsense I was being told and had the timing set back a few degrees. Now, there are no more ping issues and the vette STILL runs like a raped ape with no SOTP difference.
It's just a simple fact that SOME of these cars just will not run on 91 octane gas if you mess with the A/F ratio even a LITTLE bit, like the Blackwing obviously does.
And my "knock sensor" must have been broke from the factory, as when mine started pinging, it continued pinging....especially when I accelerated faster, going up hill. It was rather apparant to me at least, that the onboard computer was unable to make the necessary adjustments in A/F ratio and ignition timing to compensate for the difference the Blackwing made.
"Rattling H-pipe" indeed! What won't they think of next?
I finally got tired of all the nonsense I was being told and had the timing set back a few degrees. Now, there are no more ping issues and the vette STILL runs like a raped ape with no SOTP difference.
It's just a simple fact that SOME of these cars just will not run on 91 octane gas if you mess with the A/F ratio even a LITTLE bit, like the Blackwing obviously does.
And my "knock sensor" must have been broke from the factory, as when mine started pinging, it continued pinging....especially when I accelerated faster, going up hill. It was rather apparant to me at least, that the onboard computer was unable to make the necessary adjustments in A/F ratio and ignition timing to compensate for the difference the Blackwing made.
"Rattling H-pipe" indeed! What won't they think of next?
Last edited by MagikDraggin; Dec 29, 2005 at 10:27 PM.
Drifting
Joined: Oct 2005
Posts: 1,354
Likes: 717
From: Terrell North Carolina
Have 2000 C-5, Blackwing, Corsas, Xpipe, LS1 Edit, AC Delco Iridium Plugs. Never had any Ping before or after mods, always run BP(Amoco Gold Since New), have 25K miles now. Fuel filter will not fix the problem. I suspect Poor Quality Fuel, or Possible the fuel you are using is a winter blend which could make a Ping Problem Possilble.
Pro
Joined: Jan 2003
Posts: 526
Likes: 0
From: Tampa fl
Originally Posted by allmee
Thanks for all the info! I just filled up with Chevron super and will see if this makes a difference. If not, I will try the stock air box, although I have a K&N for that also and the hole in cover has been cut larger. If I get to that point I will clean the MAS as described!!
Grazie!!
Grazie!!
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Originally Posted by allmee
I am using Shell 91 oct. , 91 is the highest here in Vegas. Maybe I'll try Chevron. The noise is definately a knock and I am getting no codes. What type of plugs should I use when I get to changing them?
Thanks!
Thanks!