Many times, a post is opened, it is discussed in many ways, but I found in many posts, that there was no conclusion or a solution.
So, I thought to post my findings to my own post.
During the replacement of the Crank Case Ventilation hoses, I found that the PO had worked on them, but only did the job half way or just some unreliable patch work.
In fact the connector for the small/short hose was broken off and it was patched with RTV or some other type of sealant. It looks almost as if the connector posts can be replaced as an assembly....
If everything is assembled, it is impossible to see the extend of the problem. As I replaced the fuel injector, two of the pintle caps fell off into the intake port
. To get them out, I had to remove the Plastic intake pipes. Since I had it out, I went to do some more reliable repair on the crank case vent connector. In a moment of clouded mind, I did not realize that the larger opening, that I produced, would now allow for more unmeasured air to enter the intake manifold.
Exactly this caused the engine to run at elevated idle!
I capped the hose and viola, the engine went back to normal idle speed.
It's the little things that can cause you headaches, not the obvious stuff.