pinging
04-04-2004, 12:04 AM
#1
Member
Thread Starter
Join Date: Jun 2002
Location: San Diego
Posts: 121
Likes: 0
Received 0 Likes
on
0 Posts
2002 C230
pinging
i've always used 91 octane gas and i can feel my car pinging when sitting at a light.. is this normal? if not, is it covered under warranty?
04-04-2004, 04:24 AM
#4
MBWorld Fanatic!
a charactristic "crunchy" sound, also referred to as "knocking". It is caused by in-cylinder detonation due to premature combustion.
All modern cars have knock sensors. When the ECU sees signals from such a sensor indicating detonation, it retards ignition timing to try and eliminate the problem.
All modern cars have knock sensors. When the ECU sees signals from such a sensor indicating detonation, it retards ignition timing to try and eliminate the problem.
Last edited by vadim; 04-04-2004 at 10:58 PM.
04-04-2004, 02:28 PM
#5
MBWorld Fanatic!
Join Date: Nov 2001
Location: Vancouver Island, B.C. Canada
Posts: 1,377
Likes: 0
Received 1 Like
on
1 Post
2005 smart cabrio; 2008 Mercedes-Benz B 200
pinging
....a.k.a. pinking in Britain....
Well I find it very hard to believe that any car at idle would ping. If it was, the engine would surely hole a piston or two shortly after it's driven off.
Pinging normally occurs under load. The electronics should compensate for any pinging and if it's extreme, I would expect the electronics to be smart enough to shut the engine down or make the car undriveable.
I would suspect a rattle of some sort.
Either way get it checked out, but if it really is pinging you should get out immediately and start walking. Otherwise you're likely to melt down your engine in short order.
Well I find it very hard to believe that any car at idle would ping. If it was, the engine would surely hole a piston or two shortly after it's driven off.
Pinging normally occurs under load. The electronics should compensate for any pinging and if it's extreme, I would expect the electronics to be smart enough to shut the engine down or make the car undriveable.
I would suspect a rattle of some sort.
Either way get it checked out, but if it really is pinging you should get out immediately and start walking. Otherwise you're likely to melt down your engine in short order.
