Jmreim
Senior Member
- Joined
- Jan 7, 2019
- Messages
- 179
- Location
- USA
- Vessel Name
- Boundless
- Vessel Make
- 2013 North Pacific 43'
Have a 2013 Cummins QSB 5.9 305hp with 1300 hrs. Engine surveyed Sept. 2022 and no issues found - I've owned the boat for almost a year and it's been trouble-free.
On cold startup last week, some diesel fuel appeared to be coming from the exhaust for about 1 minute. Engine then ran for several hrs. and no further fuel was seen in the exhaust. After warm engine shutdown, we waited about 45 mins. before restarting and no fuel was seen. Waited about 24 hrs. and once again some diesel fuel appeared in the exhaust for about a minute after a cold start.
While I haven't had the contaminant in the water analyzed, it surely smells like diesel and appears as a sheen on the water like diesel - I assume if it were engine or trans. oil, it wouldn't stink like diesel.
Mechanic has done a dropout test to the injectors but nothing was found. We're now told that the injectors should be removed/rebuilt/replaced but I'm concerned (perhaps hopeful) that it might be something far less involved and less expensive to repair. It would be terrible to do the injectors ($7K-$8K)and land with the same issue afterwards.
Any comments or recommendations would be most appreciated -
Jim
On cold startup last week, some diesel fuel appeared to be coming from the exhaust for about 1 minute. Engine then ran for several hrs. and no further fuel was seen in the exhaust. After warm engine shutdown, we waited about 45 mins. before restarting and no fuel was seen. Waited about 24 hrs. and once again some diesel fuel appeared in the exhaust for about a minute after a cold start.
While I haven't had the contaminant in the water analyzed, it surely smells like diesel and appears as a sheen on the water like diesel - I assume if it were engine or trans. oil, it wouldn't stink like diesel.
Mechanic has done a dropout test to the injectors but nothing was found. We're now told that the injectors should be removed/rebuilt/replaced but I'm concerned (perhaps hopeful) that it might be something far less involved and less expensive to repair. It would be terrible to do the injectors ($7K-$8K)and land with the same issue afterwards.
Any comments or recommendations would be most appreciated -
Jim