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On a mercruiser 3 litre, what is the second 3 wire oil pressure send unit for? There is a T fitting on engone block with a standard 1 wire pressure sending unit and on other end of T a 3 wire sending unit. thanks
I have a 1999 bayliner with 181 cid 3 litre 4 cyl.......my question is: there is a single spring loaded adjustment screw right at the base of the carb where it bolts to the manifold, is this a idle/low speed adjustment screw or a high speed adjustment screw ? If low speed, is there a fixed jet...
