livinginthepast
Jedi Trainee
Offline
It's Spring and time to reopen old wounds! Yay.
Okay, now that I've got the ignition and charging issues all addressed (new distributor, new coil, new generator, spark plug wires, plugs)... Timing and dwell set...
...I've returned, with reticence, to the carbs. I'm attempting, yes again, to adjust the mixture. Ugh.
Recap - Stock 948 SUs. Carbs were rebuilt last summer, oversized throttle shafts installed. I've checked for leaks by spraying carb cleaner around throttle shafts and around all carb/manifold connection points. No change in idle detected. However, both carbs run really lean (the rear even more than the front).
In the worst case, the rear carb, I can lower the adjusting nut all the way to the final thread and the idle will stumble and die when lifting the pistons via the lift pins (whatever they are called) - which I keep reading indicates a lean condition. My solution has been just to adjust until I get the smoothest idle and drive the car. However, I really do want to get this corrected.
Should I just order the rich needles for these carbs and install or is there something more fundamental that I need to be looking for?
Okay, now that I've got the ignition and charging issues all addressed (new distributor, new coil, new generator, spark plug wires, plugs)... Timing and dwell set...
...I've returned, with reticence, to the carbs. I'm attempting, yes again, to adjust the mixture. Ugh.
Recap - Stock 948 SUs. Carbs were rebuilt last summer, oversized throttle shafts installed. I've checked for leaks by spraying carb cleaner around throttle shafts and around all carb/manifold connection points. No change in idle detected. However, both carbs run really lean (the rear even more than the front).
In the worst case, the rear carb, I can lower the adjusting nut all the way to the final thread and the idle will stumble and die when lifting the pistons via the lift pins (whatever they are called) - which I keep reading indicates a lean condition. My solution has been just to adjust until I get the smoothest idle and drive the car. However, I really do want to get this corrected.
Should I just order the rich needles for these carbs and install or is there something more fundamental that I need to be looking for?