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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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I have a 93 mercruiser 4.3 bravo 1 Gen 2.. Been having acceleration

Customer Question

I have a 93 mercruiser 4.3 bravo 1 Gen 2.. Been having acceleration issues used to jump on plane. It will run good once it gets going but Im at full throttle used to run like crazy at half throttle any ideas
Submitted: 2 years ago.
Category: Boat
Expert:  Tan replied 2 years ago.
Hello. When was the last time you did a full tune up? When did you have the carb rebuilt? Could I get the engine serial number please?
Customer: replied 2 years ago.
spent last season tuning eveything, this spring they redid carb was only thing I had not done, under load I couldnt get the boat above 2000 rpm, once we changed fuel and separator it would go, it just wont get up and go. I used to have 5 people on board and it would jump not if I have 1 he has to be up front to get it on plane, then it goes like hell. dont have serial number
Customer: replied 2 years ago.
thats why I am wondering if I have a filter clog someplace else
Expert:  Tan replied 2 years ago.
This cound be a fuel supply issue from the boat side fuel tank. The fuel pick up tune in the tank has a screen filter on the end of the tube. This can get clogged and cause a fuel restriction. Try this run the engine on a different fuel supply like a gas can. Post back with findings.
Customer: replied 2 years ago.
will give it try and let you know
Expert:  Tan replied 2 years ago.

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