Originally Posted by
Eric Brown
Gentlemen.
Here's what I have done so far. Visual check of induction system. Different spark plugs. Tried another O-200 carburetor. Removed both ignition leads from one cylinder at a time and ran engine below 1000 RPM to see if miss would disappear with the dead cylinder. Tried setting the idle mix very lean (1/4 turn). Tried very rich mix (3 turns). The miss is still present below 1200 RPM.
Riddle me this. If the crank and cam gears were off by 1 tooth, would this create this problem ???? There were no index marks on my gears. I set them by feel of the #1 cylinder valve overlap per the OH manual.