At the museum we have a Red Diamond in one of our pieces of equipment. Its not the original engine but a re-power performed
decades ago when the chassis got separated from its original engine.
A year ago we performed a tune-up - new plugs, cap, points, condenser, wires, coil etc. and it was purring like a kitten.
This winter it started miss behaving - dropping a cylinder or two. When we pulled the plugs they are fouled. We ran a compression
test and all is spot on. We again gave it a tune-up. It ran great for a less than an hour and fouled up again.
Last time we ran i