1999 25hp mercury

[kodiak]

need some help, just bought this motor, instantly had gas pouring out of carb, cleaned carb and fixed problem. ran a couple of times ran great, now the problem is that when i run it at top speed the motor bogs down and then runs again. idles fine and runs great except for when i open it up. took hood off and see that when bogs down, gas shoots out of the top of carb. I cleaned it again and still doing it?????

 

[dkondelik]

Re: 1999 25hp mercury

'afternoon Kodiak,<br /><br />i presume that you have a manual, and removed the carbs to clean them. <br />Did you replace the float when you serviced the carb?<br />might be stuck.<br />did you reuse that old gaskets? might be leaking past gasket.<br /><br />hard to tell from here.<br /><br />shoots out of the top?<br /><br />can you add more detail on what exactly you did to clean and where out of the top it's leaking?

 

[kodiak]

Re: 1999 25hp mercury

klondike,<br /><br />shoots out of the top of the carb, like it is flooded. when i cleaned the carb i used carb cleaner on float, arm, needle and all.. cleaned everything. float is separate from arm.??

 

[dkondelik]

Re: 1999 25hp mercury

does the float,... float?

 

[kodiak]

Re: 1999 25hp mercury

I guess i assumed it would, why would it not?? (i am a new at this) what should i put it water to make sure

 

[dkondelik]

Re: 1999 25hp mercury

water is heavier the gas, try flaoting it in gas, in the carb bowel. it may be saturated if it was "put up" without being winterized.<br /><br />the motor is kind of young to expect this kind of problem but lets determine if this is the source.<br /><br />if the motor wasn't winterized, perhaps it would be a good idea to service the carb. tear it down, soak it in solvent, blow (compressed air) out the channels & orafices, replace gaskets, float & needle.<br /><br />& if you dont have one, you ought to seriusly consider getting a service manual. it will help alot.<br /><br />if this is the 2-cylinder with the head cast as part of the block, the basic design has been around, with very little change, for several years. it's a dependable design (else they would have quit making it). <br /><br />not too much to that carb but it does sound like that is where your problem is.

 

[kodiak]

Re: 1999 25hp mercury

thanks klondike,<br />I will soak the carb and parts in carb cleaner?