1987 318 Tuning with Summit Carb

I agree with others: the idle jets seem to be huge. Can see no reason for them being that large for a carb designed to go on a relatively stock engine. Is 0.046" a misprint & they are actually 0.036" [ more like it ]?

You see the booster pic in post #25? The 1/4" diam brass tube? The small tube inside the tube [ visible in the pic ] is the idle jet [ fuel ] . You need to get some numbered drills, use as a go-no-go gauge & see if they are 046. If so, you should reduce the area to about 0.032". You do some calculations to find a piece of wire that will reduce the area. Since at this stage you are trying to clean up the idle, you should be able, for a short test, to scrunch up a length that will sit inside the 1/4" tube & poke one end of the wire into the jet. If the problem is solved, then a more permanent fix is pretty easy.