Royal Smart Person
- Oct 2, 2016
I have built hundreds of QJ's. Awesome carb and if it runs good don't ever get rid of it. We can re-bush with valve guide buishings to take the throttle plate play out. The newest ones are 20+ years old with CCC. Non CCC 30+. The Carter made QJ's are junk as they disintegrate. One issue we had with high idle were the secondary's plates were allowing air flow creating a higher then desired idle. We had a coating we would put on them but that has long dried up. Sometime you can LIGHTLY tap each end of the throttle plate to re-center the plates in the bore. See if you now have vacuum to the distributer advance at idle now where maybe you had ported before.