Rob - just went through this with a marina neighbour’s universal - went end to end and finally found that the governor had a tired spring. The Good thing was that by the time we were done the entire fuel supply and exhaust were checked, optimized and are now known to be reliable, plus he can now bleed it in minutes, in the dark if need be. The mechanics around here (GTA) are thin on the ground and he had two chasing the wrong things and wasting time before we tackled it ourselves. Good luck, Dave.
Sent from my iPhone > On Jun 26, 2022, at 4:44 PM, Neil Andersen via CnC-List > <cnc-list@cnc-list.com> wrote: > > > Any overheating?? I had a bad riser on my “new-to-me” of another > manufacturer (still a Yanmar) and overheating was the first notable finding. > > Neil Andersen, W3NEA > Rock Hall, MD 21661 > 484-354-8800 > From: jameshesketh via CnC-List <cnc-list@cnc-list.com> > Sent: Sunday, June 26, 2022 2:05:47 PM > To: Stus-List <cnc-list@cnc-list.com> > Cc: jameshesketh <jameshesk...@gmail.com> > Subject: Stus-List Re: Yanmar 2 GMF > > Just had the same symptoms on my Yanmar Sb8. > My exhaust elbow was almost completely blocked causing excessive back > pressure. > >>> On Jun 26, 2022, at 9:38 AM, Robert Abbott via CnC-List >>> <cnc-list@cnc-list.com> wrote: >>> >> >> Went to take the boat out Friday for a short sail .....motoring out heading >> into a12 knt breeze....started to increase the RPM's and found the engine >> wouldn't rev about 2,100 RPM's ....marine diesel's are not supposed to be >> that complicated but they are to me. I wouldn't know where to start to >> trouble shoot....getting a mechanic to deal with it this week. I spoke to >> him and told him the situation and he thinks it is a fuel problem....engine >> not getting enough fuel....my fuel tank and fuel should be clean as I had >> the bottom of it replaced 2 years ago and the 2 fuel filters replaced. He >> thinks one or both of the filters are restricting the fuel flow.....I hope >> he is right but I don't think so. >> >> Possibly many are causes....restricted fuel injectors, fuel pump, etc. >> ....the engine has never been serviced in the 16 years I have had the boat >> >> Any insight or guidance to help greatly appreciated. >> >> Rob Abbott >> AZURA >> C&C 32 - #277 >> Halifax, N.S. >>
