Mercury, 80hp, 1988 3 cylinder 2 stroke

by Steve
(Willisburg KY. USA)

The motor starts fine but the bottom 2 carbs have little to no vacuum at or just above ide. All elect. components are new ie... Stator, trigger, coils, rectifier, voltage regulator, fuel filter, flipped the reeds over and all look good. It does backfire at idle but at higher rpm it smoothes out. All 3 carbs cleaned and inspected. Great compression on all cylinders. 120, 120, and 124.
Any help or ideas would be greatly appreciated.

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