on the passenger side of the carb, looking from the front of the car- just outboard of the idle mix screw is a vacuum port. Mine doesn't ever show any vacuum on it- not at idle and not at part throttle. What is this port for?
Also, while I'm asking questions... I was reviewing some EGR stuff on my car and I noted that the secondary vacuum pot- the one that has the linkage to the secondary air flaps was staying closed, or in the position to NOT allow the secondary air flaps to open while I had the air cleaner off. I don't ever recall that happening before with the air cleaner off. It has vacuum to it and when I turn the engine off the valve releases but as soon as I turn the engine on the vacuum pulls it in and holds it. It was 105 at my house yesterday and the engine was warm.
While checking the EGR valve, I could put vacuum on it and have the valve actuate. There was no idle speed difference between when the valve was open or closed( meaning when vacuum was applied= open and no vacuum= closed) Is that right? The manual says that idle speed should change.
I'm just trying to make sure my engine is running as good as it can.... Thanks for any help.
Greg
