question about my 3.0 volvo penta

[blizz]

i just bought the boat a little over a week ago and took it out yesterday. only problem is..after about an hour yesterday, there came a point where if i'm giving it slow, steady throttle...once it gets to a certain point it studders and wants to shut off...if i ease back then it's ok. when it does get to that point if i bring the throttle back and forth a few times, eventually it gets passed that point and gets up to speed and has no problem sustaining 30+ MPH. it's almost like its having problems with fuel so i'd venture to say a carb problem or a fuel filter but then why is it corrected by throttling it back and forth a few times? anyone have any ideas?

 

[Bondo]

Re: question about my 3.0 volvo penta

it's almost like its having problems with fuel so i'd venture to say a carb problem or a fuel filter but then why is it corrected by throttling it back and forth a few times?

Ayuh,.... I Agree with your prognosis,...
It gets over the hump because pumpin' the throttle actuates the acc.pump,...
The acc.pump is independent of the primaries...

 

[blizz]

Re: question about my 3.0 volvo penta

so if the boat had been sitting a while before i bought it....he said a year and a half but had started it regularly...then a carb tune or rebuild is in order?

 

[robjen1019]

Re: question about my 3.0 volvo penta

Id start with the idle screws. Take them out(remember how many turns) and spray carb cleaner in and try to blow out the gunk. Next take off the fuel line and blast the inside with more cleaner. last spray in every hole you can find. Start it up and give a little gas and spray down the throat.

This might get you through the rest of the year and then you can rebuild this winter.

 

[blizz]

Re: question about my 3.0 volvo penta

I forgot to add that while in neutral, I can give it gas and it runs perfectly through the range of the trottle. It's when the drive is engaged that it does that. What does that tell us?

 

[captmello]

Re: question about my 3.0 volvo penta

I forgot to add that while in neutral, I can give it gas and it runs perfectly through the range of the trottle. It's when the drive is engaged that it does that. What does that tell us?

nothing.

 

[blizz]

Re: question about my 3.0 volvo penta

really? why would it be any different? in nuetral i can give it gas throughout the entire range with no problem. why would that change when the boat is in gear??

 

[Bondo]

Re: question about my 3.0 volvo penta

really? why would it be any different? in nuetral i can give it gas throughout the entire range with no problem. why would that change when the boat is in gear??

Ayuh,.... Load, vs. No Load....

No Load reving is Meaningless...

 

[blizz]

Re: question about my 3.0 volvo penta

Ok cool....thanks.