Smoke test

[sajk]

My e36 2.8 sets an e4 p1189 rich code for the back 3 cylinders. It never sets an engine light. I clear the code and it's back in days. My guy does not have a smoke test machine to properly check for vacuum leaks. Does someone know any place in JHB where I can get a smoke test done? I know a rich code should not set a rich code but want to rule it out.

 

[DarrylvanNiekerk]

A vacuum leak can cause the engine to rev erratically, if your revs ate stable but it is over fueling then it might not be a vacuum leak.

You can buy a cheap can of carb cleaner and spray that around the manifold and vacuum lines. If there is a leak it will suck the carb cleaner in and change the revs. DIY.

 

[sajk]

Thanks for the reply. My guy says he has done that multiple times, I gather the spray method is good for easy stuff you can easily get to but there are a lot of hoses and seals not so easy.