Reefencounter
Cadet
- Joined
- Mar 3, 2015
- Messages
- 7
I have a 30' Flybridge cruiser with a single KAD 42 that has 850 hours. I now have a sudden loss of revs on the engine. The engine runs great, starts easily and idles nice, with no black or white smoke, but when under load, I cant get more than 2500 rpm. Out of gear I can get 4000 rpm. I have had the boat out of the water and antifouled, outdrive removed and serviced, including checking the props. (DP 290). I have had all of the injectors removed, tested and serviced. I have had the injector pump removed and serviced, I have had the turbo removed and tested/serviced. I have had a new higher volume lift pump installed. I have had the aftercooler cleaned and serviced. All filters replaced and all hoses checked. I have had the fuel tanks checked for correct flow and have had pressure gauges on the fuel lines to check that correct fuel flow is ok. The Supercharger cuts in nicely at 1500 rpm and the boat takes off nicely but will on go to 2500rpm at WOT. The engine has very little electronics and the throttle is a cable and WOT checked ok. So far I have spent over $14,000.00 in repairs and maintenance and still have the same problem. I did however get a new starter motor and a new alternator just prior to the loss of revs happening. Does anyone have any ideas where I could go from here.