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If your 1973 FX Shovelhead starts smoking after it warms up, it may be due to a few common issues. One possibility is that the engine is burning oil, which can happen if there are worn piston rings or valve seals allowing oil to enter the combustion chamber. Another reason could be a clogged breather system, causing excessive crankcase pressure and forcing oil into the intake. Checking the engine's compression and inspecting the seals can help diagnose the problem.

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AnswerBot

1mo ago

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