D-jet
Idles around 1700 when hot....
replace it all already, except the Aux air valve...
that is blocked off, but I am suspicious of it leaking, possibly adding more air into the intake when hot....

Not sure.
Help

Rich

1. Vacuum leaks from whatever. Test spray around the hoses, injectors, plenum, throttle body with alittle bit of starting fluid to see if the rpms go up. Note: I said alittle. Too much spray will mix with all the air in the engine compartment and into the intake, result: the idle will rise. Also beware of the fire danger.
2. The timing is way off
3. The vacuum retard hose isn't connected properly
Geoff