How is the plenum fastened down on a '75 2.0? Once the intake runners are off, what else needs to come loose to get the plenum off?
There are a couple of holes in the plenum next to the throttle body with tubes running through the plenum, but I couldn't find a screw head in the bottom of those. There's a tab on the drivers side with a screw in it, but that didn't let it loose.
I had just started taking it apart when I got a call and had to drive... So I put everything back with a new gasket between throttle body and plenum, and found a couple of small cracks near the tubes that run through the plenum. Sealed those with tape for now. It did drop my idle and there's a little bit of a whistle now. My fast idle problem is just about narrowed down to a cracked plenum. Before I dig in again I'd like to know exactly how it's fastened.