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International Automotive Technicians Network
Re: Mazda exhaust valves
Posted to Technical Discussion Forum on 8/2/2023


Well, I've got a whole bunch of not much. Went on vacation, then got the head back from the machine shop - and they somehow forgot to save the old valves.

There was moderate carbon on the pistons. Light carbon (oil?) fouling on the spark plugs, sli... Login to read more.