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Code 559 low fuel pressure – accelerating
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This topic has 29 replies, has 8 voices, and was last updated by
8 months ago September 18, 2018 at 5:01 pm Hello, Ive been trying to solve the 559 low fuel pressure alarm for some time now with no results. Right now it only activates when power is put to plane and when WOT. Boat has a pair of 5.9 QSB 355 hp 650 hrs 2007 Here a list of things done with no sucess in order: 1)Replaced racor. (Issue improved but still present) 2)Replaced engine fuel filter and vacum gauge on racor) 3)Replaced pressure sensor on fuel rail. 4)Replaced fuel transfer pump …
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in: Cummins Marine Engines
August 26, 2023 at 1:11 pm Look for the ecm and find the lines. Dont have pictures, the code can be many other things. . Good luck.Ā
29 Replies
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posted: 8 months ago
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Qsc Wastegate exhaust leak
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago November 16, 2022 at 8:52 pm Noticed soot build up around turbo housing. Took heat shield off today and leak is where the linkage enters the turbo. Is there a fix for this?Ā Thanks in advance.Ā <br /><br /> Mike
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in: Cummins Marine Engines
3 RepliesNovember 21, 2022 at 3:36 am I had 2 x turbos have a crackĀ in between bolt holes. Exactly the same place made me think it was a casting flaw.Last Post by:
posted: 1 year ago
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QCS 8.3 540hp prop
This topic has 6 replies, has 5 voices, and was last updated by
1 year ago
August 26, 2022 at 3:05 pm Hello,<br />We have a Duffy 37 finished by Farrin in 2010 running a Cummins QSC 8.3 540 hp. Per the engine plate max rpm is 2600 governed at 2675.Ā This is turning a ZF transmission with a 1.962 gear ratio.<br />Fully loaded with 300 gal fuel, 200 gal water and 5 people plus gear WOT is 2520 rpm. Speed is 23.6 and GPH is 27.4. Cruising at 2100 rpm we get to 16.1 knots and burn 18.1 gph.<br />Dry weight is 22,000 lbs… full…
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in: Cummins Marine Engines
6 RepliesSeptember 9, 2022 at 4:43 pm Thanks Steve.Ā After reading your excellent write-up and Tony’s comments, I looked at and compared by data to the Cummins data and concluded that I’m over-propped and need about 1″ to 1.5″ less pitch.Ā (slightly updated spreadsheet attached) Seems that 1″ of less pitch will get me there but with the prop slip you experienced and to get to Tony’s recommended WOT of 2685 I might need 1.5″ to 2″ of le…Last Post by:
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Custom Exhaust Fabrication Questions
This topic has 8 replies, has 4 voices, and was last updated by
1 year ago June 7, 2022 at 3:23 am As probably (not probably – definitely) the most knowledgeable bunch regarding exhaust design, I have some questions.Ā I am looking at moving from the crappy std cummins elbows which I know are no inherently safe, however mine were replaced 4 years ago (and due to costs kept std) I know they have limited life left in them, so am designing a new set of ‘risers’ to get fabricated locally (shipping and exchange rate make this kind…
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in: Cummins Marine Engines
8 RepliesJune 13, 2022 at 7:00 am Look up AHM fabrication. They did a set for me for a couple of Volvos. Def not worth the stuffing around for the cost.Last Post by:
posted: 1 year ago
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No fuel to injectors
This topic has 3 replies, has 3 voices, and was last updated by
2 years ago January 25, 2022 at 12:14 pm Hi chris here Iām new to this so pls excuseĀ Ā I have a 5.9 qsb with smart craft gages . Engine wonāt start I use every day in Summer Ā not a lot winter time commercial fishing .. engine was running fine staring fine then suddenly would not start ??? I changed crank shaft sensor as a code did come up .. did t help still not starting .. changed filters and racor did see little water in racor ..so drained fuel filter out looked good clean no water …
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in: Cummins Marine Engines
3 RepliesJanuary 26, 2022 at 3:56 am Not sure if it a the same, but on a engine that sat for a few year.Ā Ive had the ceramic HP fuel pump plungers lock up before on a QSC if its the same pump? I don’t believe that CumminsĀ call it a serviceable part?ĀLast Post by:
posted: 2 years ago
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2011 Cummins QSC 490
This topic has 6 replies, has 4 voices, and was last updated by
2 years ago October 21, 2021 at 5:32 am {content}Recently purchased a new to me Charter/Passenger boat with a QSC 490 4200 hours. Looks to be the original smart craft gauges. Not the same Vessel View 4 I have on my 2018 QSB 5.9 355. On sea trial with 5 people, and full fuel we weāre able to hit 2570, but engine was only showing 92 percent load. Iām in the process now of getting everything ready for when I begin to use the boat starting next April Aftercooler has bubbling on the…
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in: Cummins Marine Engines
6 RepliesOctober 29, 2021 at 9:33 am Kane, If you look at the Performance report that Tony attached you see that the 490 is rated at 2500 RPM with the gov kicking in somewhere in the 2565 to 2585 range to limit RPM. You can also look at the data plate that is on the engine and it will tell you the rated RPM. You reported 2570 which is spot on. Since you are seeing a load% that is below 100% at 2570 that bodes well for the life of the engine as it pertains to prop loading. Just …Last Post by:
posted: 2 years ago
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Info on cat C12.9? Good motor?
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago August 17, 2021 at 9:57 am Looking for info folks have on cat c12.9’s. Doesn’t seem to be a ton of info on the internet, at least from the searching I’ve done. Even cat’s website seems to have very little info. Sounds like it may be a re-branded Italian made engine? Looks like its a completely different engine than the c12, and has only been out for a few years. About 500 lbs lighter and 6″ shorter than the c18, but twin turbos and displac…
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in: All Other Marine Diesels
1 ReplyAugust 18, 2021 at 3:33 pm Yes it is a rebadged FPT. one side of the line IVECO FPT They are stopping the 12L block now as well for some reason. still doing the 9.3 and the 18Last Post by:
posted: 2 years ago
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After replacing starter, engine willing start. Turns over.
This topic has 2 replies, has 3 voices, and was last updated by
2 years ago July 1, 2021 at 2:25 pm 6CTA 8.3M2 turns over strong but does not start. Upgraded the starter to the Delco Remy 39MT that has an IMS. Remote mag switch is connected to the IMS switch as per instructions to have both mag switches functioning. Any help is greatly appreciated.
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in: Cummins Marine Engines
2 RepliesJuly 3, 2021 at 5:54 pm I have the ask the starter is turning the right way? I had CAT supply me one for one of their engines that ran the other way,Last Post by:
posted: 2 years ago
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ECU hour adjustment
This topic has 6 replies, has 2 voices, and was last updated by
3 years ago November 21, 2020 at 3:05 am Hi All, Does anyone know if it is possible to get the hours changed on a cm850 ECU? I have just put on a 2nd hand one to replace a broken one. It currently shows 9999 hours on Smartcraft .. Cummins say they cant make the hours the same as they were on the previous ecu. Google says its possible with Calterm? thanks Luke
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in: Cummins Marine Engines
6 RepliesFebruary 5, 2021 at 10:08 pm I found a way. Not the right way.. Data link-program. I even found a way to turn of the broken Wif sensor on the old ecm I replaced. So deep down I could have not bought a 2nd hand ecm and paid Cummins to recalibrate it. I would have been 1 k better off this way at the beginning.Last Post by:
posted: 3 years ago
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removing cummins 6bta turbo how much coolant to drain
This topic has 4 replies, has 3 voices, and was last updated by
3 years ago
October 1, 2020 at 1:13 am Headed to remove my turbo today. I am curious how much coolant I need to drain. Is it necessary to drain all the coolant? I have gathered it holds 6 gallons of coolant. curious if I can just drain a few gallons or if it all needs to come out. Thanks
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in: Cummins Marine Engines
4 RepliesOctober 1, 2020 at 6:40 pm Thanks guys, that fitting is actually 1/8 NPT if anyone is looking before hand to go get the hose barb.Last Post by:
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Reman common rail injector or not
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago September 28, 2020 at 6:15 pm Hi All, What are the thoughts on reman QSC Bosch injectors. My local Bosch dealer has them at a bit over 1/2 the price of the new ones? My local mechanic say they haven’t seen a successful common rail reman done locally and suggested new. cheers Luke
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in: Cummins Marine Engines
3 RepliesSeptember 29, 2020 at 6:11 pm My experience has been that Cummins RECON injectors are “as new”.. As to buying rebuilt injectors from another source, no experience doing that, but that alone would not deter me from buying them from a well established aftermarket source if the $$ was a major factor.Last Post by:
posted: 3 years ago
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qsc cracked turbo x 2
This topic has 4 replies, has 3 voices, and was last updated by
3 years ago July 29, 2020 at 2:54 am Hi Guys, While doing some other work I noticed both my turbo housings are cracked, I am not sure if they leak yet but will do tomorrow. So both are cracked in the same place, I am not sure if it is new or came with the engines 2nd hand as I have never taken the heat shield off and had a good look. Anyone seen this before? Other than a new housing, would you drop the housing off the turbo and give it a weld ? Or just paint over it and see if…
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in: Cummins Marine Engines
4 RepliesAugust 15, 2020 at 10:49 am Is it possible your exhaust is unsupported and causing too much load? The crack goes right through a bolt hole. Maybe weight plus vibration is causing it.Last Post by:
posted: 3 years ago
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smart craft SV V3.42a
This topic has 2 replies, has 3 voices, and was last updated by
3 years ago January 30, 2020 at 9:35 am My starboard smart craft display when turned on for my QSB 8.3 diesel request calibration ? I followed the prompts and when complete I received a new message. The adaption process failed. Check that the proper connectors are plugged into the proper levers Check for proper ERC type. Could anyone let me know how I can trouble shoot the issue?
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in: Instrumentation & Electronics
2 RepliesJuly 20, 2020 at 6:32 am Not hijack the thread but. I have been told my smart craft v1 has done a similar thing. It has always had no major issues. So I am not there and it was working when I last saw it.. It did the same as Steve posted. They then some how the got to calibrate but only the pt engine and it does not recognize the stb at all when the key is on. They say they have tried to reset sensor detection and do a factor reset with no luck. They must have got a p…Last Post by:
posted: 3 years ago
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6CTA8.3 Starter Gear
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago May 30, 2020 at 12:55 pm Just pulled my starter and noticed the end of the gear is a little chewed up. I inspected the ring gear and it shows no sign of wear. Should I be concerned about this? Doug New Adventure
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in: Cummins Marine Engines
3 RepliesJune 1, 2020 at 6:18 am I assume the CTA is different? But I did a similar thing when I missed the spacer when swapping starter motors on a QSC.Last Post by:
posted: 3 years ago
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qsc fuel actuator valve
This topic has 18 replies, has 6 voices, and was last updated by
3 years ago August 27, 2019 at 2:51 am hi guys qsc fuel actuator valve is this the same as the qsb one you have for sale? boat broke down would only fire once on crank then nothing until key was cycled unplugging of actuator would let the engine start but with these fault codes
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in: Cummins Marine Engines
18 RepliesMay 19, 2020 at 6:49 pm Thanks for the “final solution”…………….Glad you got it all worked out.. TonyLast Post by:
posted: 3 years ago
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QSC Vibration Damper
This topic has 1 reply, has 2 voices, and was last updated by
4 years ago February 25, 2020 at 6:45 am I would like an opinion on this wobble of this QSC 500 vibration damper. I have removed it and can find nothing wrong with the mounting. Is there a test for these dampers? I did not notice a vibration in this engine specifically but the boat has a vibration between 1200-1900 rpms that a prop scan did not correct. I do not want to throw $400 at something that might be normal.
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in: Cummins Marine Engines
1 ReplyFebruary 26, 2020 at 3:56 am I have a pair of 540’s and I may not have the damper only a double pulley,after a look at quick serve i need to go look again! It will be interesting to find out what is meant to be there! cheers LukeLast Post by:
posted: 4 years ago
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Raw water intermittently failing- De-bonded impeller
This topic has 20 replies, has 7 voices, and was last updated by
4 years ago January 26, 2020 at 11:26 pm Hi Guys Had a few runs in the last few days – 1 hour south – no problems – then following day a hours run up the Swan River (Perth) and had an engine overheat alarm go off after about 45 minutes – Port side. I have an issue with this engine running hot anyway but i’m fairly sure its electrical as all gauges are off compared the the SB side. I’ve just got to trace everything through. Anyway this alarm was genui…
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in: Cummins Marine Engines
20 RepliesFebruary 7, 2020 at 7:06 am Thanks Simon .must be because we can’t trust the Cummins mechs here š I considered removing the pump but space restrictions make it a tough job too. Jack engine, remove engine mount bracket AND engine mount, fight with raw water pipes to get them off then remove the pump, fit the impeller and the fight to put it all back on hoping I hadn’t screwed the alignment up… The pump was new last March and went thru hell trying to get th…Last Post by:
posted: 4 years ago
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Alarm question got 3208
This topic has 5 replies, has 4 voices, and was last updated by
4 years ago February 4, 2020 at 4:43 am I know this is a Cummins forum but was wondering if seaboard sells high coolant temp alarm and low oil pressure alarms that would work on my 3208? Thank you, Tom.
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in: All Other Marine Diesels
5 RepliesFebruary 6, 2020 at 1:49 am Its been a while.. But the coolant alarm should go to the low oil pressure switch( round cylinder about a inch long). It should be at the rear of the V on the head.Last Post by:
posted: 4 years ago
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qsc ecm replacement
This topic has 2 replies, has 2 voices, and was last updated by
4 years ago November 30, 2019 at 4:25 pm So I need a new ecm some time as the wif sensor part has died( I have been clearing it for 2 years now..). I tried swapping it engine to engine and the alarm went with the ecm. It is shitting me enough now and I dont want to just clear a alarm in case it is something important every time I start. Can I get any 2 port and power ( for QSC) , then get it reflashed and the data transferred across? Or do I need to get one the right code and then c…
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in: Cummins Marine Engines
2 RepliesNovember 30, 2019 at 4:39 pm Thanks for the fast reply Tony. I will drop Corey a email. I will see if he has a solution for me.Last Post by:
posted: 4 years ago
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Cetop3 flow rates
This topic has 5 replies, has 2 voices, and was last updated by
4 years ago September 1, 2019 at 6:26 am Hi All, Just thought I would try the brains trust. I have tried google and cant find what I am after. So a cetop 3 direction solenoid valve says it flows at 60 lpm ish depending in brand. I am assuming that would be at the max flow rate at max pressure of 350bar? Does anyone have or has seen a flow rate chart depending on pressure? I would assume the flow rate at 100bar would be a lot less around 20? So this is on my Hydraulic thruster, I coul…
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in: General Discussion
5 RepliesSeptember 7, 2019 at 2:06 pm Yes, you need more pump displacement so you can do what you need to do at a lower RPMLast Post by:
posted: 4 years ago
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Code 559 low fuel pressure – accelerating
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