78 merc 115 hp fuel problem?????

[marshfisher]

i have a 115 hp merc about a 78 or 79 modle i took it out the other day and it ran fine until i throttled down fairly quickly and then when i throttled up it killed out finally ran strong again and one tank ran out of gas and switched to new tank and it had trouble starting and when it did start it would not idle for more than a feww secs. let it sit awhile and it started again and i had to throw throttle all the way and it finally caught and took off if throttled slowly it would kill out??? please help!!!!

 

[DHPMARINE]

Re: 78 merc 115 hp fuel problem?????

Probably you were running out of gas on the first tank,and sucked most of the bottom crud up into the carbs.<br /><br />DHP

 

[marshfisher]

Re: 78 merc 115 hp fuel problem?????

Originally posted by DHPMARINE:<br /> Probably you were running out of gas on the first tank,and sucked most of the bottom crud up into the carbs.<br /><br />DHP

it could'nt be that because theese were both brand neww tanks??????

 

[marshfisher]

Re: 78 merc 115 hp fuel problem?????

it was almost like it was flooding out or maybe not getting enough gas the fumes were pretty bad but would flooding cause boat to stall out when put into gear???

 

[jtegidgo]

Re: 78 merc 115 hp fuel problem?????

It sounds to me like your flooding out. Cause when you say "i had to throw throttle all the way and it finally caught" throwing the throttle all the way opens the butterfly plates all the way open in the carb. It coughs out the excess gas.

 

[Clams Canino]

Re: 78 merc 115 hp fuel problem?????

Try running it dry at idle and re-priming it. Just to re-set the floats.<br /><br />-W

 

[marshfisher]

Re: 78 merc 115 hp fuel problem?????

Originally posted by Jtregidgo:<br /> It sounds to me like your flooding out. Cause when you say "i had to throw throttle all the way and it finally caught" throwing the throttle all the way opens the butterfly plates all the way open in the carb. It coughs out the excess gas.

 

[marshfisher]

Re: 78 merc 115 hp fuel problem?????

Originally posted by Jtregidgo:<br /> It sounds to me like your flooding out. Cause when you say "i had to throw throttle all the way and it finally caught" throwing the throttle all the way opens the butterfly plates all the way open in the carb. It coughs out the excess gas.

yeah i thought it might be flooding out as well thank you for the help!

 

[marshfisher]

Re: 78 merc 115 hp fuel problem?????

Originally posted by Clams Canino:<br /> Try running it dry at idle and re-priming it. Just to re-set the floats.<br /><br />-W

i will try that today thank you i did also spray about a half a can of power tune from quick silver " i think that is what it is called" i sprayed it in all three carbs could this help?

 

[marshfisher]

Re: 78 merc 115 hp fuel problem?????

tried idleing and letting it run out of gas and re-priming but no luck keeps flooding out is there something that can be done to correct this and how hard is it to do like some kind of carb adjust.... im new to this and this is my first boat please bare with me and thanks again for all your help!!!