polcan

Hi
Today i did my first undercarriage inspection in preparation for oil sender removal and found out that my exhaust test port on drivers side is wide open.Tube rusted and came apart.Passenger side was cut and sealed.My O2 sensor must have been going bananas this whole time.Probably one reason why my shark was running a bit off..
Was planning to change my engine mounts but it looks very tight in there.Is there a way to measure if mounts are collapsed visually.?
1988 S4 Auto
I.m not a mechanic but open exhaust test port will have huge negative impact on engine performance right?

DonT

Here's a link to recent thread regarding the test port.

Link -

https://rennlist.com/forums/928-foru...port-bung.html

James Bailey

I doubt it has any noticable effect on the way the engine runs...minor exhaust leak is all it is....

76FJ55

quick method for checking MM condition is to look at the height of the top of the intake relative to the cross bar. they should be approximately level with each other. if the intace sits significantly below the cross bar then the MM have collapsed.