On Idle, with no power asked, I always got 4500 RPM.
I also got more when manoeuvering, just a kick to get the boat react but moving slowly.
----- Message reçu -----
De : firstname.lastname@example.org
À : amelyachtowners
Date : 2009-05-09, 00:24:07
Sujet : AW: [Amel] My experience on Volvo TMD22P-C-B
Do you get this 3100 RPM with the gear box on idle ?
SM Tamango 2
Datum: 08.05.2009 21:57
Betreff: [Amel] My experience on Volvo TMD22P-C-B
Having read the numerous posts on this topic, and experienced and solved the same type of problem, I must admit
that I made the usual mistake of running my engine too low: why speed more than 6 knots while admiring beautifull
landscapes, unfortunately without wind (1800 RPM) .
One day, while wanting to go a bit faster, the engine started to refuse to go higher than 2000 RPM.
I opened the exhaust elbow and found it largely restreined by charcoal and the propeller of the turbo litterally
completely blocked. It took me hours, with a very smal screw driver to free all that, including the wesgate, but
without removing the turbo. The result was far from being perfect, but better: about 2500 RPM.
Recently it went back down to 2000 RPM; it was time for something more efficient : I took the whole turbo into
pieces, including disconnecting the shaft of the wastegate from the lever which moves it in case of overpressure (not
only the rod linking to the actuator) . Having done that I was able, having all parts in hand, to clean properly the
flap and the seat of the wastegate with sandpaper; A welding point to refit the lever ( Even in the middle of nowhere I
found somebody with a welding machine). Be sure the wastegate is firmly closed and , although the volvo manual says to
move it from time to time, do not do it!!!! You will never be sure it is well closed and the risk of overpressure is
so small on a sailing boat!!! which should not have a turbo anyway.
I now get 3100 RPM, before cleanng the injectors, which I never did (shame on me) and am doing now.
Yves MARTIN d'AIGUEPERSE
S.V. BLUE MARINE