96 Sport Jet 120 - help!

[j77l]

Have a 1996 Sport Jet 120 in a Baja Blast Jet Boat. It will start right away after cylinders clear then will not start again. <br />Pulled plugs and 1 and 4 are soaked, 2 and 3 are relitvley dry. the top carb feeds 1 and 2 and the bottom carb feeds 3 and 4 - fuel flows into the bowls on both carbs. Changed plugs no help.<br />if you pull all 4 plugs and turn engine over fuel blows out of 1 and 4 not 2 and 3.<br />any help will be greatly appreciated!

 

[Zamboni]

Re: 96 Sport Jet 120 - help!

That is strange-hows comp on 2 and 3....exhaust gasket ok?<br /><br />Sent you over the manual, hopfully someone chimes in on this.

 

[j77l]

Re: 96 Sport Jet 120 - help!

not sure if my above statement is true about the top carb feedin the top two and the bottom two being fed by the bottom carb. Can not find a drawing that really depicts what feeds what.<br />also not sure the plug wires are on the correct plugs, there is no numbers, the top is plugged into the top and so forth as you go down the engine.

 

[j77l]

Re: 96 Sport Jet 120 - help!

have pulled the carbs, going to clean them tonight.. will let u know if this helps.. thinking about pulling the mainfold plate to check the reed valves if anyone thinks this could be an issue.

 

[Capt Ken]

Re: 96 Sport Jet 120 - help!

I have had the reeds break on several sport jets. Top carb does feed 1&2 and bottom feeds 3&4. The reeds get brittle and start breaking off on the ends.