Hi all,
The other day we were out on our boat. After around 30mins of cruising around 3200rpm, the port engine went into limp mode with a fault saying ´Engine Elec Fault - Service Soon´
We shut down the engine and restarted it, it went straight into limp mode again. We then shut off the engine and then waited a few minutes before restarting and we were able to rev back up to around 3000rpm before the limp mode kicked back in.
After restarting a few more times it seemed that the engine just did not want to go past 3000rpm or above 1.0 bar of boost. So we kept both engines below 3000 rpm and finished our journey to the destination.
Both engines remained the same in terms of temperatures, voltage, noise, etc. Although slightly erratic rpm from the troubled engine +/- 80rmp
The next day we were en route back to port however we stopped of at a small group of islands for the afternoon. We cruised over for around 30mins at just a tad under 3000rpm and no problems.
Once the tide had turned we decided to make our way back to port (a journey of around 40mins at normal speed). No sooner had we just left, upon pushing the throttles forward to get up onto the plane and off, the port engine went back into limp mode.
We got it going again and decided to cruise back around 2500rpm 14kts just to get home. The engine did cut out around 4 times during that journey however bringing the revs back up slowly we could maintain a speed that wasn´t so bad.
Upon arrival to the marina (yay) I opened up the engine cover to be greeted by a haze of diesel smoke and the very pronounced smell of diesel. Going over the engine it appeared that the leak off line had perished which caused the diesel to leak over the top of the injectors and down the gully onto the hot turbo. presumably there, meeting the hot turbo, the diesel slowly burnt away, hence the haze of smoke.
I booked this in to get sorted out and presumed that the line had a connection with the fault and limo mode situation. Job was done and happy days. or so i thought!
So, this morning, I went down to the marina, got on the boat and decided to take it out for a little spin to see if all is well. Started fine, both engines, sounds fine etc. Rpm´s looked good too.
motored out to sea then pushed the throttles forward onwards to 3000rpm and the port engine went back into limp mode.
I did this a couple of times to make sure it wasn´t an airlock of some sorts. but no, back into limp mode.
So i have now put it back on the pontoon and had a look. Sure enough the fuel leak has been sorted at the top of the injectors so I can now take that out of the equation.
I do however want to try and troubleshoot as much as possible before the mechanics have a look at it next week as I want to take it away next weekend.
This is an annoying issue. so,
Anyone have any thoughts on what may cause this? It seems to rev out fine although under load going up through the revs is where the problem hits.
Could it be sensor related?
Turbo related?
Engines are only 205hrs each
Serial number 229470 (on problem engine)
Any ideas, would be greatly appreciated.
The other day we were out on our boat. After around 30mins of cruising around 3200rpm, the port engine went into limp mode with a fault saying ´Engine Elec Fault - Service Soon´
We shut down the engine and restarted it, it went straight into limp mode again. We then shut off the engine and then waited a few minutes before restarting and we were able to rev back up to around 3000rpm before the limp mode kicked back in.
After restarting a few more times it seemed that the engine just did not want to go past 3000rpm or above 1.0 bar of boost. So we kept both engines below 3000 rpm and finished our journey to the destination.
Both engines remained the same in terms of temperatures, voltage, noise, etc. Although slightly erratic rpm from the troubled engine +/- 80rmp
The next day we were en route back to port however we stopped of at a small group of islands for the afternoon. We cruised over for around 30mins at just a tad under 3000rpm and no problems.
Once the tide had turned we decided to make our way back to port (a journey of around 40mins at normal speed). No sooner had we just left, upon pushing the throttles forward to get up onto the plane and off, the port engine went back into limp mode.
We got it going again and decided to cruise back around 2500rpm 14kts just to get home. The engine did cut out around 4 times during that journey however bringing the revs back up slowly we could maintain a speed that wasn´t so bad.
Upon arrival to the marina (yay) I opened up the engine cover to be greeted by a haze of diesel smoke and the very pronounced smell of diesel. Going over the engine it appeared that the leak off line had perished which caused the diesel to leak over the top of the injectors and down the gully onto the hot turbo. presumably there, meeting the hot turbo, the diesel slowly burnt away, hence the haze of smoke.
I booked this in to get sorted out and presumed that the line had a connection with the fault and limo mode situation. Job was done and happy days. or so i thought!
So, this morning, I went down to the marina, got on the boat and decided to take it out for a little spin to see if all is well. Started fine, both engines, sounds fine etc. Rpm´s looked good too.
motored out to sea then pushed the throttles forward onwards to 3000rpm and the port engine went back into limp mode.
I did this a couple of times to make sure it wasn´t an airlock of some sorts. but no, back into limp mode.
So i have now put it back on the pontoon and had a look. Sure enough the fuel leak has been sorted at the top of the injectors so I can now take that out of the equation.
I do however want to try and troubleshoot as much as possible before the mechanics have a look at it next week as I want to take it away next weekend.
This is an annoying issue. so,
Anyone have any thoughts on what may cause this? It seems to rev out fine although under load going up through the revs is where the problem hits.
Could it be sensor related?
Turbo related?
Engines are only 205hrs each
Serial number 229470 (on problem engine)
Any ideas, would be greatly appreciated.