I looked at the plugs and the electrode on all of them look pearly white with light grey on the tip. The center two plugs have a ton of black build-up on everything but the electrode, even the threads. The outside ones aren't as bad as the inside ones but there is still plenty of black build-up.
I know the engine isn't running rich becuase I took the original 59 jets and sequentually went down nine steps to 51's and realized it was losing significant power. I then put back on the 53's and decided it was running good again. This is why the problem I am experiencing is so strange. How would I be able to recognize a vacuum leak if there were one??
Our manifold is a heated manifold so that is not the problem either. Thank you for all of your help.
