Thread: Too much crankcase pressure, novice engine builder

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don't mix the plugs up when you remove them -keep them in the order they are in the engine------the best plug reading results are when engine is shut down while doing its best ---like going for a drive and running it up thru the gears hard and shooting off, coasting down to a stop in neutral and pulling plugs while even still hot------have another set with you already gapped so you can install them and keep the others as removed-

and do you know what your timing is set to???????? did you verify the tdc mark ?