One cylinder bank running rich, or lean?
07-19-2001, 12:28 AM
#1
Team Owner
Thread Starter
Member Since: Aug 1999
Location: Bagpipes put the "fun" in "funeral"
Posts: 69,020
Likes: 0
Received 0 Likes
on
0 Posts
My driver's side Corsa muffler is consistently darker than the passenger side one. So it seems to me that the driver's side is running richer.
Does that sound like an O2 sensor thing? What else should I look at?
Does that sound like an O2 sensor thing? What else should I look at?
07-19-2001, 12:35 AM
#3
Safety Car
This can be caused by a few things.
1. Bad O2 sensor
2. Exhaust leak
There are more possibilities, but this is what I would lean towards.
The best way to check the O2 sensors it to switch them and see if the problem follows the O2. If it does, you found your bad one.
If not, then most likely you have a pre O2 exhaust leak.
Good Luck,
1. Bad O2 sensor
2. Exhaust leak
There are more possibilities, but this is what I would lean towards.
The best way to check the O2 sensors it to switch them and see if the problem follows the O2. If it does, you found your bad one.
If not, then most likely you have a pre O2 exhaust leak.
Good Luck,
07-19-2001, 12:40 AM
#4
Team Owner
Thread Starter
Member Since: Aug 1999
Location: Bagpipes put the "fun" in "funeral"
Posts: 69,020
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 2FST4U
This can be caused by a few things.
1. Bad O2 sensor
2. Exhaust leak
There are more possibilities, but this is what I would lean towards.
The best way to check the O2 sensors it to switch them and see if the problem follows the O2. If it does, you found your bad one.
If not, then most likely you have a pre O2 exhaust leak.
Good Luck,
[/color]
1. Bad O2 sensor
2. Exhaust leak
There are more possibilities, but this is what I would lean towards.
The best way to check the O2 sensors it to switch them and see if the problem follows the O2. If it does, you found your bad one.
If not, then most likely you have a pre O2 exhaust leak.
Good Luck,
[/color]
07-19-2001, 02:21 AM
#5
Le Mans Master
But if you don't have true duals, then it really tells you nothing since both sides are combined at the Y-pipe.
If you're really concerned, find one of those handheld pyrometer (or some other means of reading high temps) guns and aim at each header pipe on both banks and note the readings.
Randy
If you're really concerned, find one of those handheld pyrometer (or some other means of reading high temps) guns and aim at each header pipe on both banks and note the readings.
Randy
07-19-2001, 06:36 PM
#6
Team Owner
Thread Starter
Member Since: Aug 1999
Location: Bagpipes put the "fun" in "funeral"
Posts: 69,020
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by KF9WM's 87 coupe
But if you don't have true duals, then it really tells you nothing since both sides are combined at the Y-pipe.
If you're really concerned, find one of those handheld pyrometer (or some other means of reading high temps) guns and aim at each header pipe on both banks and note the readings.
Randy
[/color]
If you're really concerned, find one of those handheld pyrometer (or some other means of reading high temps) guns and aim at each header pipe on both banks and note the readings.
Randy
[/color]
07-19-2001, 07:22 PM
#7
Safety Car
In order to effect the O2 readings, the leak would have to be before the O2, which means at the head or around the bung. You might even effect it a little at the collector. After the y-pipe does not really matter.
You will not necessarily smell it. Just listen for it. You should be able to hear it. It will be kinda like a ticking.
Good Luck,
You will not necessarily smell it. Just listen for it. You should be able to hear it. It will be kinda like a ticking.
Good Luck,
