My sei sporting MPI's due a timing belt, so while thats off i'm going to change the water pump too. the question is, the spark plug on cylinder 1's normally covered in oil, while the garage is doing the belt/water pump is it worth stripping the engine and doing the head guasket and sorting out the oil problem, i think its either a valve seal or a piston ring, or should i just wait for it to die?
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