I replaced the exhaust manifolds, spacres, and risers about 8 months ago. Now that spring is here and I went boating, the risers are hotter than I would like and one side is WAY hotter than the other. I can keep my hand on one riser (uncomfortably), but the other side I can not. I replaced the thermostat and the intake impeller. The engine itself doesn't overheat, just the risers. Any ideas?
Strange Merc 350 issue
- Thread starter cwatson53
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