Thermoquad low vacuum readings

When does it get super lean?

Once moving and at most any steady speed whenever I apply throttle (short of opening secondaries) it goes lean off the meter. If I keep accelerating lightly it will stay at 17.5 to 18:1.

So the plugs match your O2 readings? I never go by a number unless it matches the plugs first.

I have old plugs in it and have been trying to get close by A/F meter but have not been checking plugs. Will take a look. I’m going to put fresh plugs in soon.