|
|
|
|
Thread Tools | Display Modes |
|
04-04-2003, 11:08 PM | #1 |
Scooby Specialist
Member#: 453
Join Date: Oct 1999
Location: ***23567;***12373;***12356;***
Vehicle:2020 Kia Telluride 2021 Porsche Taycan |
What does ping and knock sound like?
I was driving this past week on a long roadtrip out east and back and on the way back from the east coast i noticed my car would make this funny noise.
While i was driving at freewya speeds from 50-80 mph whenever i lifted my foot off the throttle, i would hear the chirping sound that i normally expect from the WRX exhaust and custom midpipe i had installed. However now i noticed a snapping/rattling sound that would only occur when i lifted my foot off the gas. I could stop this sound early by pressing my foot back on the gas. It would start off fast then gradually tail off after a few seconds, but it was noticably loud and almost sounded as if something on the underbody of the car was snapping to pieces and i could feel the force of the sound in the gas pedal. However i dont think anythying is actually falling apart. I'm wondering if its related to engine knock/ping at all, because I was wondering if i was hearing some misfiring in the exhaust manifold. I usually run regular octane gas, but for a change i ran premium 91 octane for nearly a full tank and the frequency of these sounds was significantly reduced but not altogether gone. When I filled my next tank with regular gas, the sounds came b ack again with the same 'lift-off-throttle' pattern. So far my engine seems to be running ok at constant cruise and accelration and other than the weird sound, i can't tell if this is anything serious. But its a new sound and its concerning me. Plus i haven't seen a CEL again, but i'm not sure if that could pop up at any time. Just wondering if anyone knows what this may be. Thanks Ed |
04-05-2003, 04:48 PM | #2 |
Scooby Guru
Member#: 13910
Join Date: Jan 2002
Chapter/Region:
NESIC
Location: Greenwich, CT
Vehicle:2005 Legacy GT blue |
they said the pinging sounds like marbles rolling around in a tin can..I never heard the sound myself but it would be nice for a recording..
|
04-05-2003, 10:45 PM | #3 |
Scooby Specialist
Member#: 3149
Join Date: Dec 2000
Location: montreal quebec
Vehicle:01 V7 GC/R32 sky |
I had rod knock before, my con rod spun a bearing and trust me, you know something is really wrong (clacl clack clack) all the time which correlate to the rpm's (obviously). I had detonation before (due to nitrous) too and the car wouldnt climb past 5000 rpm at WOT and made a funny noise, like escaping gas and engine noise mixed together (and the engine sounded liek it was really straining), the my engine went to crap after I took my foot off the gas just a second too late.
|
04-06-2003, 08:25 AM | #4 |
Scooby Specialist
Member#: 31985
Join Date: Jan 2003
Chapter/Region:
Tri-State
Location: Ny-Ct
Vehicle:06 Outback Wagon SWP |
I know a subaru tech when I told him my car was making a noise similar to what you describe, he told me it is normally the tensioner,these cars are known for that.Try taking it to subaru and have them check it out.
|
04-06-2003, 09:55 PM | #5 | |
Scooby Specialist
Member#: 16523
Join Date: Mar 2002
Chapter/Region:
MWSOC
Location: Anti-Russian Aggression Zone
|
Quote:
http://forums.nasioc.com/forums/show...hreadid=297045 |
|
04-07-2003, 09:11 AM | #6 |
Add Lightness
Moderator Member#: 13699
Join Date: Dec 2001
Chapter/Region:
NESIC
Location: Hopkinton, MA
Vehicle:2021 Building It Better |
If it was pinging, you'd hear it under full throttle, not when backing off the gas. It sounds a bit like very small ball bearings inside a cast iron box being rattled around.....or like sleet on a skylight.
jack |
04-08-2003, 05:00 PM | #7 |
Scooby Newbie
Member#: 22851
Join Date: Aug 2002
|
Ed if you want to hear what pinging sounds like I'll take you for a ride in my truck. I would need to put 87 oct. and put a load on it, but you will diffently learn how pinging sounds.
Vince |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
what exactly does a rod knock sound like? | peterdaniel | Normally Aspirated Powertrain | 1 | 03-30-2008 02:13 AM |
what does a broken shock sounds like? | awd4ever | Brakes, Steering & Suspension | 1 | 03-03-2003 11:32 AM |
What does turbo death whine sound like? | WR-REX | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 7 | 02-25-2003 12:49 AM |
What does timing belt noise sound like? | 98legacy | Service & Maintenance | 6 | 01-13-2003 06:29 AM |
What does an exhaust leak sound like? | protouring72 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 3 | 04-28-2002 12:09 AM |