Jaguar F-Pace Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
Any reason only one of my four exhaust pipes look dark with carbon residue more then the other three? The third one from the left consistently looks darker.
 

·
Registered
Joined
·
2,191 Posts
Not seeing that with my SVR. If you aren't in dynamic or are running with the exhaust baffles closed in dynamic only one of the exhaust pipes on each side are active. I think it's the outside ones, but to be honest I haven't really looked underneath to be sure. If you tend to run that way a lot, then the outside ones would get darker than the inside just under normal operations. Since one side is darker, it might be worth getting things checked out. I think that may mean that a cylinder on that side may be running a bit rich. Maybe a sensor is off, but typically you would get a notification on that.
 

·
Registered
Joined
·
2 Posts
Discussion Starter #3
73008

All pipes look like the one on the right except for the inside passanger side pipe above.
 

·
Super Moderator
Joined
·
1,866 Posts
Here is my thought as shown below (understanding this may not be exactly what yours looks like) notice that the exhaust pipe from the engine back is directed primarily to the inner exhaust tip. In combination with what @PA-FPace-F has mentioned that my be your problem, Your are running rich on one bank and not the other and the sensor is not detecting it.

73009


My Vette will many time have the inner tips show a little darker when the both exhaust valves are open (usually when I get on it a lot).
 

·
Registered
Joined
·
62 Posts
Funny you mentioned this, as I let mine idle for a few minutes to see if I could download a software update (none available for me), and when I gave up and walked around the car, I noticed only the 3rd exhaust pipe had condensation on it. I know the computers often run a warm-up mode to get the cats hot, but that wouldn't explain the asymmetrical valve configuration I observed.
 
1 - 5 of 5 Posts
Top