96 3.0 2 barrel Carb

[97_Manta_Ray_CR]

Hello all,

First off I purchased this boat last year and had some running issues and talk to some people through here and they suggested a carb rebuild, so after running it a couple of times this year I decided to do the re build. I have not tested the boat in the water yet but ever since I have rebuilt the carb the engine is extremely hard to start and once it gets started there is a lot more exhaust that before, Like the grass behind the motor is black and the exhaust at the prop is now black. Once started the engine runs good but once I shut the motor off for 10 plus min it is hard to start again almost like I'm having to do a cold start again. I'm pretty mechanically Inclined and I'm thinking its like the carb is burning to much fuel.

Thanks for all the help and advice
CR

 

[jimmbo]

High float, sticky float, loose or missing jets, improperly adjusted choke. inoperative choke pull off. heat to choke bi-metal inoperative

 

[97_Manta_Ray_CR]

Thank you for the quick response, what are the possible fixes for this?

 

[jimmbo]

Take the carb apart and inspect, repair, adjust.

 

[Rick Stephens]

Don't feel too bad, probably the most often redone repair of any is carburetor rebuilds. Go back in and make sure everything is clean and open. CHeck and double check every passage. Re-check float height. Lots of patience.

 

[97_Manta_Ray_CR]

Would you recommend purchasing a new float or is the one that was in there still good?

 

[Alumarine]

If it looks good and doesn't have fuel in it it's probably still good.

 

[97_Manta_Ray_CR]

awesome thank you

 

[97_Manta_Ray_CR]

What should be float height be? Where do I measure from?

 

[Rick Stephens]

Here's the service manual and Mercarb start page.
http://boatinfo.no/lib/mercruiser/manuals/mercruiser13.html#/270

 

[97_Manta_Ray_CR]

Thank you