Reply
 
Thread Tools Display Modes
 
Old 01-01-2016, 07:58 AM   #1
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
My Cummins just stopped!

We were pulling into the Ft Myer Beach mooring field and my QSR 5.9 Cummins diesel just stopped. I quickly dropped the anchor and did some quick troubleshooting before calling TowBoatUS for a tow to a mooring. Engine would turn over, but no 'fire'.
After further inspection, I've found a blown 2 prong 25amp automotive type fuse, replaced it and it blew again, immediately. Looked on the port side of the engine near the ECM stuff, and found a 'plug in' that appeared to be burned, so unplugged it, took it apart, cleaned the connections and tried fuse again, it blew.
Now waiting until at least Thursday before a Cummins mechanic can get out here.
Anyone have any ideas?
I really understood my little Yanmar diesel on my sailboat, but this is a totally different animal, Lots more electronic stuff...

On mooring #57 at Ft Myers Beach mooring field
There could be worst places to be stuck.

Wm Mayberry
OPTIMYSTIQUE
Mariner 40
__________________
Advertisement

Wmiii is offline   Reply With Quote
Old 01-01-2016, 08:34 AM   #2
Guru
 
caltexflanc's Avatar
 
City: North Carolina for now
Country: USA
Vessel Name: Small Incentive
Vessel Model: Boston Whaler 130 Sport
Join Date: Aug 2011
Posts: 3,786
I recommend you subscribe to boatdiesel.com. Many knowledgeable Cummins professionals and experienced boaters on there. The answer may already be on there, otherwise you can get some informed opinions on your issue.
__________________

__________________
George

"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"
caltexflanc is offline   Reply With Quote
Old 01-01-2016, 09:48 AM   #3
Guru
 
djmarchand's Avatar
 
City: East Greenwich, RI
Country: USA
Vessel Name: Bella
Vessel Model: Mainship Pilot 34
Join Date: Aug 2012
Posts: 2,877
Boatdiesel is your best bet, but here is one thing you can check. I know that this "trick" will work on the mechanical 6B, but not sure about the all electronic QSB.


There is a run solenoid mounted near the injection pump that moves a lever on the pump that lets it run. If that solenoid isn't pulling in, then the engine won't start and if was running when it failed or lost power to it, the engine will stop.


You can manually pull up (or is it down?) the lever that the solenoid moves and see if it will start. If it starts, then you need to troubleshoot the power circuitry to that solenoid or the solenoid itself. But with a burned connector, it could be both.


My understanding of the electronic QSB is if a sensor detects something out of whack, the computer will limit revs and power but not shut down the engine- if the computer is ok. The run solenoid is one of the few things (other than the computer itself) that will keep the engine from running if it is bad or if it isn't getting power to it.


David
djmarchand is offline   Reply With Quote
Old 01-01-2016, 10:06 AM   #4
Guru
 
Forkliftt's Avatar
 
City: Biloxi Mississippi
Country: USA
Vessel Name: Patricia Louise II
Vessel Model: 1983 42' Present Sundeck
Join Date: Oct 2007
Posts: 2,433
The QSR 8.3 is a conversion to a common rail set up as I understand, and yours may be the same. Blown fuses/ burned plug indicates to me a shorted circuit. I high $$ tech with a laptop is probably the best route. You would think it stored a fault code making locating the problem go quickly. Good luck!!


1983 Present 42 Sundeck
Twin Lehman 135's
✌️
__________________
Steve Point Cadet/ Biloxi, Mississippi USA
*Present 42 twin 135 Lehmans
Forkliftt is offline   Reply With Quote
Old 01-01-2016, 10:14 AM   #5
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,884
Probably is a QSB 5.9. Full electronic common rail engine. Could be electric lift pump shorted out and that's blowing the fuse.
Ski in NC is offline   Reply With Quote
Old 01-01-2016, 07:18 PM   #6
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
Yep, My bad, it is a QSB 5.9
Hopen to get some idea next Thursday when Cummins guy comes.
Good thing about diesel engines, they run and run as long as they have fuel and air, now I've got this electronic issues. Now I'm dead in the water.
Hopefully I can find a solution if this happens again away from civilization
Wmiii is offline   Reply With Quote
Old 01-01-2016, 08:37 PM   #7
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 7,563
Dang those new fangled diesels with electronics. Long live the ancient FL 120/135. Wmiii,I hope the issue can be speedily resolved.
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Old 01-01-2016, 09:51 PM   #8
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,884
Yea, that's the downside of electronic engines. EPA has mandated low emissions which requires electronic engines. But electronics fail. How much emissions are created recovering from such a failure? Towboat, shipping parts, mechanics traveling? And what is the emissions benefit from making trawler engines cleaner? Is it worth it??

Old skool engines just needed air, fuel, oil and cooling to stay running. Sad that elegance is disappearing.
Ski in NC is offline   Reply With Quote
Old 01-02-2016, 06:41 AM   #9
Guru
 
timjet's Avatar
 
Join Date: Apr 2009
Posts: 1,905
Yup, very thankful for my mechanical 6B's. A Cummins mechanic will be your most expensive route.

Like others have said, check boatdiesel.com and get a heads up of what to do, then you can either try and fix it yourself or hire some one to fix it, but if you've done all the trouble shooting and you hire someone it will be quicken and cheaper. Buy the part before hand.

Good luck.
__________________
Tim
Tampa Bay
Carver 355 ACMY Twin Cummins Diesels Sold
timjet is offline   Reply With Quote
Old 01-02-2016, 10:21 AM   #10
Senior Member
 
Steve DAntonio's Avatar
 
City: Deltaville
Country: United States
Join Date: Dec 2015
Posts: 108
A blown fuse, 25 amps, multiple times is clearly a dead short. Since you have nothing to do until the Cummins guy comes, you may as well carefully inspect the wiring harness on this engine, look for possible chafe points to the block. If you find nothing untoward there have a careful look at the back of engine instrument panel(s) at he helm station(s). In my experience, blown fuses of this sort are rarely an engine induced issue, they are usually something related to the engine installation, wiring harness run or accessories connected to the engine instrument panel.

That fuse likely supplies power to the entire wiring harness, from the engine all the way to the key switch and instrument panel. A short anywhere along the way, or at the panel, could be the culprit. If the fuse is blowing as soon as you turn the key on, then it's something between the load side of the key switch and the engine, or on the engine itself, but not the starting/cranking circuit. If any work has been done along or near that wiring harness run, engine to instrument panel, or around the panel itself, I'd check there first.

While it would be nice, if the engine can't be powered up, i.e. power on with key switch on, before the fuse blows, a computer will do little good as the engine's ECU won't power up, the mechanic will have to use his experience and electrical troubleshooting skills. If it's something he's seen before, on the engine, he may go right to it, however, if it's in the boat's harness, that's a bit more challenging, so if you can identify it you'll save yourself some money, even if you can't fix it yourself.
__________________
Steve D'Antonio
Steve DAntonio is offline   Reply With Quote
Old 01-02-2016, 10:41 AM   #11
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,707
Love your avatar Steve.
__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Old 01-02-2016, 12:18 PM   #12
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
Thanks, Steve.
That should keep me occupied for a few dsys.
Appreciate the guidance

Wm Mayberry
OPTIMYSTIQUE
Mariner 40
Ft Myers Beach mooring field
Wmiii is offline   Reply With Quote
Old 01-03-2016, 11:18 AM   #13
Senior Member
 
Steve DAntonio's Avatar
 
City: Deltaville
Country: United States
Join Date: Dec 2015
Posts: 108
Wm, be sure to let us know what you find.
__________________
Steve D'Antonio
Steve DAntonio is offline   Reply With Quote
Old 01-03-2016, 11:22 AM   #14
Guru
 
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 6,361
Don't forget to check for a short in the key switch.
sunchaser is offline   Reply With Quote
Old 01-03-2016, 01:02 PM   #15
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
Hopefully, I have attached a picture of the port side of my engine and you can see the redish 'plug'. That is what appears to have burned or shorted out.
Wmiii is offline   Reply With Quote
Old 01-03-2016, 01:06 PM   #16
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
Click image for larger version

Name:	20160103_120313_resized.jpg
Views:	163
Size:	98.0 KB
ID:	47854
Wmiii is offline   Reply With Quote
Old 01-03-2016, 01:56 PM   #17
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
I can't tell anything by that picture. You need to get a hold of a service manual with a wiring diagram. As mentioned, go join boatdiesel.com
Capt.Bill11 is offline   Reply With Quote
Old 01-03-2016, 02:11 PM   #18
Guru
 
High Wire's Avatar
 
City: Cape May, NJ and Englewood, FL
Country: USA
Vessel Name: Irish Lady
Join Date: Dec 2007
Posts: 1,600
Quote:
Originally Posted by Wmiii View Post
We were pulling into the Ft Myer Beach mooring field and my QSR 5.9 Cummins diesel just stopped. I quickly dropped the anchor and did some quick troubleshooting before calling TowBoatUS for a tow to a mooring. Engine would turn over, but no 'fire'.
After further inspection, I've found a blown 2 prong 25amp automotive type fuse, replaced it and it blew again, immediately. Looked on the port side of the engine near the ECM stuff, and found a 'plug in' that appeared to be burned, so unplugged it, took it apart, cleaned the connections and tried fuse again, it blew.
Now waiting until at least Thursday before a Cummins mechanic can get out here.
Anyone have any ideas?
I really understood my little Yanmar diesel on my sailboat, but this is a totally different animal, Lots more electronic stuff...

On mooring #57 at Ft Myers Beach mooring field
There could be worst places to be stuck.

Wm Mayberry
OPTIMYSTIQUE
Mariner 40
What happens if you unplug that plug and replace the fuse? That should narrow down to engine side or boat harness side.
Sorry I missed reading this Friday morning, we were on ball #41.
__________________
Archie
1984 Monk 36 Hull #46
Englewood, FL and Cape May, NJ
High Wire is offline   Reply With Quote
Old 01-03-2016, 04:12 PM   #19
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
We did that and still blew. I'm thinking the problem is on the part it plugs into.

We saw you here a couple of days ago.

Wm
Wmiii is offline   Reply With Quote
Old 01-03-2016, 04:14 PM   #20
Senior Member
 
Wmiii's Avatar
 
City: Bradenton, FL
Country: USA
Vessel Name: OPTIMYSTIQUE
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 118
Quote:
Originally Posted by Capt.Bill11 View Post
I can't tell anything by that picture. You need to get a hold of a service manual with a wiring diagram. As mentioned, go join boatdiesel.com
It appears to be the power supply to the ECM, I think. Found thst on line wiring diagram.
__________________

Wmiii is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 12:42 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012