150 mercuiser motor troubles

[wiperhunter2]

There is a way to check which carb is running bad. You just need to take the boat out on the water, take the cover off the carbs, where you can get enough room to cover each carb one at a time. Get up to the speed where it starts running bad, then put your hand over each carb one at a time. The carb that you cover that makes the engine die of just about die, will be your good carb. Of course this will not matter if your planning on over hauling both carbs but it could be something as simple as a pluged filter going to that carb. Some had a filter in each carbs, at the inlet fitting. Hope that helps.
WH2
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