Intake air system leak

There can be a number of causes for this problem,so to be able to give you some idea we need to know where the air leak is, the problem will be on the induction side, you can try spraying a little brake clean around the gaskets and induction pipes, if the revs alter you will have a leak, if you can pin point the problem a little closes, we can give you a better idea on what is involved in the repairs.

I have no idea how to do that. Nor do I know what is what under the hood...thanx

Sure, have a guide right here that explains it

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and video

https://youtu.be/xN5pcM-5bso


Please let us know what happens, we are interested to see what it is.

Cheers, Ken