Ok, been chasing this for a few weeks now.
1980 GL wagon 2wd, 5 speed, EA71. NEw cap,rotor,plugs,wires,fuel filter, air filter(both), new Vac. lines routed correctly. Secondaries are opening. No black smoke.
When I start the climbs here, I roll on the gas, above 2/3 throttle, it starts misfire and I lose speed. Drop a gear, it runs fine till 2/3 throttle then starts again. Misfire can be felt and sometimes heard. Compression is decent wet and dry. Plugs all look nice and tan, rear 2 (2 and 4) are a slight shade darker than 1/3. If I rack RPM to 4750 and above, it seems to clear up, but not always.
Carb is clean, new top gasket, choke is opening fully. I've tried new plugs, wires ohm out correctly, cap looks great, no burnt contacts, Dist. shaft is solid with no play. Valves in spec, adjusted last week, still in spec.
WTF am I missing here?????
It's a Cali emissions car too, so there are some differences.......