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This carbon buildup worries me.


TR6 roadsters are notorious for carbon buildup which is why the factory made physically "decoking" the head a regular maintenance item. I have since used Sea Foam (found at your favorite auto parts house like Advance) every few thousand miles to decoke. Just suck it into the intake manifold through a vac port, stall for a good soak, and restart (watch out for the smoke screen! ). Perhaps that'll work with our twins.