May 1978 build date with California emissions starts and idles perfectly, but won't go faster than around 10 MPH. No stutter or backfire, more like starving for fuel.
Attached photos show what is under the air cleaner. Aftermarket carb without fuel return line. Vacuum from the carb hooked...
Going in for some mainten and cleaning, and I am debating whether to keep all the smog equipment On my '78 40. It looks like the refuse pile behind a hose factory in there (not to mention all the wiring that needs tidying), but it is all functional and just passed Cali testing and inspection...