Re: Engine making clicking noise. What could it be?
I agree if it's more of a ticking sound especially if it's an old motor, try fresh oil...higher viscosity may help as well and or oil additive. That would be a good start and fresh oil...aint a bad thing... Hope that's about it...check to make sure you don't have any exhaust leaks...might as well eliminate simple possibilities. Hope you get it resolved soon.
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