ramcharger
Dismember
First, find out where your idle mixture screws are presently set. Count how many turns it takes to bottom the screws, and bottom the screws gently. You'll probably find that it will take 1 1/2 turns or so on each screw to bottom them. Back them out to where they were when you started.
Hook up a vacuum gauge to an intake manifold vacuum source, watch the needle and take note of what your reading is. Turn the screws in 1/4 of a turn at a time and see if your vacuum reading increases. If it does, turn them in another quarter turn. If not, back them out a quarter turn and see if vacuum increases. If it does, back them out another 1/4 turn, etc. I think you get the idea. You'll also notice that rpms will increase and you may have too adjust your idle speed again. If you do have to adjust your idle speed, check your idle mixture screws again and see if you can manage to get any more vacuum.
You will also notice that engine will run far smoother when this process has been completed, and may solve your inconsistent idle problem.
Let us know if this helps. BTW, vacuum gauges are cheap and can be had at any parts store.
Hook up a vacuum gauge to an intake manifold vacuum source, watch the needle and take note of what your reading is. Turn the screws in 1/4 of a turn at a time and see if your vacuum reading increases. If it does, turn them in another quarter turn. If not, back them out a quarter turn and see if vacuum increases. If it does, back them out another 1/4 turn, etc. I think you get the idea. You'll also notice that rpms will increase and you may have too adjust your idle speed again. If you do have to adjust your idle speed, check your idle mixture screws again and see if you can manage to get any more vacuum.
You will also notice that engine will run far smoother when this process has been completed, and may solve your inconsistent idle problem.
Let us know if this helps. BTW, vacuum gauges are cheap and can be had at any parts store.
