my 03 disco gave me a CEL and said there was a lean condition so I did the smoke test and indeed saw smoke coming from the front under and behind the compressor. I was pretty sure it was coming from the upper intake manifold junction but I was obviously wrong since changing out the gasket did nothing.....same smoke test results.


so my question is where it is leak likely coming from...fuel injector O-rings or lower intake manifold or ?

 

spray some carb cleaner around you lower intake if the RPM go up replace it