Volvo Penta 5.0 RPM problem

Maro

Recruit
Joined
Jul 28, 2015
Messages
4
So here's my problem, while in neutral, the engine works as intended and the problem occurs during the ride (acceleration).
While accelerating, the RPM is stuck around 4000 and I can't achieve the maximum intended velocity. When hooked up to the computer, the error list is empty and we can't find a fault (nor me nor the mechanics). If someone could help me I'd be really grateful.
 
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skydiveD30571

Lieutenant Junior Grade
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Feb 13, 2012
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1,042
What pitch is the propeller you are using? Have you tried a different propeller?
 

Tail_Gunner

Admiral
Joined
Jan 13, 2006
Messages
6,237
The model number and serial number of your engine, i assume due to the duo prop its is mpi could be tbi i highly doubt is a carbed duo prop...but then again one never know's.
1. dont ever rev you engine beyond 3500 in neutral
2. has this engine ever hit 5000 rpm with the prop now on the boat
3. Is the bottom of your boat squeaky clean
4. the fuel is it last years fuel or is it fresh fuel.
 
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Maro

Recruit
Joined
Jul 28, 2015
Messages
4
Tail Gunner thanks for asking.

I think engine is sxi 201kw. engine hit 5500 with this prop,bottom is clean,prop is clean,fuel is few days ago. at the moment she can only reach up to 4000 rpm and she is very slow. if there is 3 or 4 persons on board 3200 rpm.
 

Maro

Recruit
Joined
Jul 28, 2015
Messages
4
not sure is it important,but at the same time wiper,blower and horn out of order.
 
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