My 3.5 V8 revs too hard on tick over and i don't know why. Any ideas? I don't know what the engne came out of, how old it is or when it was shoe horned into the S11a. It has Zenith carbs the pots have oil in them, i have not adjusted them ever it has just developed the fast idle. Makes interesting driving behind other cars as the Landy wants to go go go.