Re: [Amel Yacht Owners] Volvos.......
That's very interesting, and I shall follow it up--but I don't think my Volvo has a sensor like yours---it's 18 years old and no computer has been near it in that time !
In neutral the revs are fine.
It runs at 2000 revs happily even with the Onan on at the same time, so I don't think there can be any problem with the fuel supply being blocked. It must be something on the engine.
The fuel injection pump was checked by Bosch in December 2016, 300 hours ago and was passed fit. Everything certainly worked as it should last season.
I am beginning to wonder it there is something wrong with the governor. On the 78hp Volvo in the SM Amel govern it down to 60hp. I assume that a governor works by limiting the supply of fuel. In neutral, you only need a small supply of fuel to exceed 2800 revs so the governor doesn't reduce the revs in neutral. However, under load, 2800 is tops.
Needless to say, trying to get an answer out of a Volvo agent in Athens at the beginning of the season is turning into a saga of its own.
Anyone who has sailed in Greek waters have any suggestions for a mechanic who knows what he's doing ?
Ian and Judy, Pen Azen, SM 302, Korfos, Greece
From: amelyachtowners@... <amelyachtowners@...> on behalf of Nick Newington ngtnewington@... [amelyachtowners]
Sent: 26 April 2018 17:23:23
Subject: Re: [Amel Yacht Owners] Volvos.......
I had a similar problem on my Amel 54 with Volvo 110hp turbo. Thought it was the turbo but it turned out to be the sensor which measures turbo boost pressure. It is located on starboard side on the Volvo and 5 minute job to change but expensive part 350 euros. Problem solved. I had to get a Volvo technician to diagnose the fault with his computer though as I was unable to diagnose the problem.
Do you have an EVC computer thing giving boost pressure? If that is stuck the EVC will limit the rpm. Sometimes these modern engines can be too clever! You could also check the turbo is sucking and the little arm goes back and forward. If it is stuck just work it with some WD40. If the boost pressure does not come up then I think it is the sensor.
Can you get 2800 in neutral? When I had my problem i could get 2800 in neutral but not under load.