#1. I was just curious exactly what does the secondary idle jet do? When I change it, I dont really notice that anything changes much.
#2. I've swapped my jets several times now and got a can get it to run good and all. But when I lean it out, I get better performance, but a little bit of a miss on idle. I have to turn the idle mixture out likealmost 4 turns. Or I can put a richer idle jet in and it will idle good but I lose performance and becomes very sensitive to altitude. Even with a 60 idle jet I still have to turn out the mixture screw about 2.5 turns. I just can't seem to find a good balance. Any thoughts?
right now i have 130/200 primaries, 135/190 secondary jet in it. and 60idle 50 secondary idle. oh yeah, this is on a 1979 20r.