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- Cummins Marine Forum Topics
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Qsb6.7 engine throttle sensor fault.
This topic has 4 replies, has 3 voices, and was last updated by
5 months ago October 12, 2023 at 4:15 pm It’s on a commercial 29 ft h&h . Install was done around 2017. Cummins west did the final setup and install. Ā fault comes on with alarm very consistent. Controls work. Engine runs Perfect shifts and rpm goes up and down with no issues. Smart craft controls. Ā any help and direction would be great.Ā
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in: Cummins Marine Engines
4 RepliesNovember 17, 2023 at 10:29 am Certainly can’t complain about the 6.7 though. Plus 5,000 hrs.Ā I have the 27 H&H, smaller bro of the 29, with a QSB 5.9 480…. The H&H line of downeast boats are very good keel boatsĀ Good luck with fixing your engine control issue.Ā Regards,Ā Bill DLast Post by:
posted: 5 months ago
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qsc 500 fuel lift pump?
This topic has 14 replies, has 3 voices, and was last updated by
5 months ago January 23, 2023 at 10:03 am So it looks like I am changing a lift pump for a 2006 qsc 500. I have not done the job before but know where it is. Some fine engineering there. Any tips on replacing it? I am not to proud to ask for some tips.Ā
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in: Cummins Marine Engines
14 RepliesNovember 8, 2023 at 10:24 pm So All these problems went away when the engine computors were swapped and the 12 v power supply pulled off when they were swapped. The wire was recrimped with a new eye and all the problems went away, amazing how those dam electrons work.Last Post by:
posted: 5 months ago
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How to zero out smart craft fuel used.
This topic has 1 reply, has 1 voices, and was last updated by
5 months ago November 1, 2023 at 4:36 pm 2004 smart craft with qsc540 engines. Trying to reset the trip fuel used. Any help would be great.Ā
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in: Cummins Marine Engines
1 ReplyNovember 8, 2023 at 10:19 pm So does no one ever zero these out? I have tried a lot of ways but still can’t figure it outLast Post by:
posted: 5 months ago
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Qsc 500 quits after releasing start button.
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago February 7, 2023 at 5:31 pm Starting a new thread as the saga continues. Original problem was engine wouldn’t start. Lift pump was not coming on so replaced lift pump. Also serviced aftercooler as it has to be removed for access. Replaced starter solenoid also as it was broken off the mount. Ā Initial startup after all maintenance it started after a few tries. What happens is when you release the start switch it does. Sometimes it doesn’t but always stumbles. Pu…
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in: Cummins Marine Engines
2 RepliesFebruary 7, 2023 at 7:52 pm I don’t really know how to tie it to it but I can copy and paste this to the previous post.ĀLast Post by:
posted: 1 year ago
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qsm11 aftercooler service?
This topic has 6 replies, has 4 voices, and was last updated by
3 years ago October 1, 2020 at 2:50 pm I have been asked to service a qsm11 aftercooler. Access is less than stellar to say the least. I looked at it today. So does the engine heat exchanger need to come off first? Looks like no other way. Any tips to guide through it? I have the seaboard kit and looks like I have everything to do the job. Thanks in advance!
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in: Cummins Marine Engines
6 RepliesOctober 21, 2020 at 4:15 am John, Any chance you documented your service with pictures? I am sure those would be of great value to others with the QSM and are looking on the site for a How – To on the QSM AC Service. There is plenty on B and C engines. Maybe we could collaborate on a Tony’s Tips article. I am happy to write it……….. How did you clean the core once it was out? Did you pressure test it before you put it back in? I am very in…Last Post by:
posted: 3 years ago
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qsc 600 will not start
This topic has 4 replies, has 2 voices, and was last updated by
3 years ago August 21, 2020 at 10:08 am Kind of a complicated boat. It has jet drives with the hamilton arrow system installed. I am looking for the cummins side wiring start diagram. It has smart craft and all custom panels but the start side looks to be stock push button start switches. Any help would be great Thanks in advance
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in: Cummins Marine Engines
4 RepliesAugust 23, 2020 at 3:07 pm Hereās the problem. Being by yourself is difficult sometimes. Swapped them and it started. Solenoid for the solenoid. The starter on that is insane. Thankful for gear when wrenches.Last Post by:
posted: 3 years ago
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You would think a single engine would be easy.
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago July 31, 2020 at 7:30 am Installed a new Seaboard raw water pump in a 2001 mainship. Itās a 330 b series. They sunk the engine in the stringers so nothing is easy. Aftercooler zincs the lower one you have to cut it in half to install it. Getting the pump out everything on the port foreword mount had to come out. Should have been easy Ok rant done. New qsb belt driven pumps are much better
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in: Cummins Marine Engines
1 ReplyJuly 31, 2020 at 7:58 am Yup, seen a bunch of singles like you describe. Check this one out — the stringer cut away for the alternator.Last Post by:
posted: 3 years ago
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2017 qsb380 quit running.
This topic has 8 replies, has 3 voices, and was last updated by
3 years ago July 21, 2020 at 9:26 am On the water now. Engine died. Getting fuel pressure low center alarm. Engine cranks but does not fire or run. Sounds like a lift pump failure.
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in: Cummins Marine Engines
8 RepliesJuly 25, 2020 at 12:32 pm The QSB 5.9 has an odd fuel system ( Cummins variant/design) not Bosch like the 6.7, QSC & QSL.. Elec. pump times out before start but once started, it needs to run 100% all the time or the engine falls on it face or will not run at all. Early on for the 1st few years there was a very high failure rate of these pumps……Also, it is very frustrating to R&R as it’s hidden behind the ECM.Last Post by:
posted: 3 years ago
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Qsb425 loosing prime
This topic has 5 replies, has 3 voices, and was last updated by
3 years ago June 8, 2020 at 9:50 am Having a issue with a a qsb425 loosing prime. Engine has about 5k hours with zero issues. Has a bit of lack of maintenance on the impellers and since a failure the engine has a hard time keeping prime. I’m not at the boat today so no pictures. Trying a different raw water pump today. Pushed air through the strainer with a shop vac. no problems back flowing with air. short run from the strainer also. It has me stumped at the moment. Any sug…
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in: Cummins Marine Engines
5 RepliesJune 8, 2020 at 9:26 pm It seems to be fixed. It was not a new pump but a low hour pump with a new impeller. I know its a good pump though. From yesterday to today the only thing we did was change the o rings on the piping and the pump. Few hours of running with no issues. There was a peace of the impeller on the discharge side also. One of those items was causing the problem I think. So is there audible alarms with smart craft?Last Post by:
posted: 3 years ago
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12 hydraulic poer pack
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago
April 7, 2020 at 3:03 pm I work on a 35 cabo. It has a large hatch similar to other boats like this. The owner has other fishing friends work on the boat. They could not get the hatch open so they started messing with it. sheared off some solenoid connctions. No luck so far finding parts but have found some whole units on line. The data plate is not legible. well sort of. Anyone evereplace one of these or spec one out?
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in: General Discussion
1 ReplyJune 2, 2020 at 6:17 am I requested an inappropriate fittings in light of this bogus data. I saw the issues individuals were having with getting the right fittings. I removed the fitting from the siphon and carried it to a water powered hose shop and it was anything but a SAE #6. The man took out a SAE #6 fitting and contrasted it with what was in the siphon and the SAE #6 was a bigger distance across fitting.Last Post by:
posted: 3 years ago
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Shaft log oh shit.
This topic has 6 replies, has 5 voices, and was last updated by
4 years ago March 24, 2020 at 10:40 pm Got one of the calls I cringe about. Shaft log broken water fitting. Interesting shaft log. Seems itās a traditional packing with raw water fitting on it. Itās a 36 Riviera. Iāve donāt shaft log changes in the water. My question is do you think I can just put splash zone on it until the next haul out? It will have to come out to repair it. Iāve already tried a ez out and it didnāt work. The pic is the starboard shaft packing gland. The 90 degre…
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in: General Discussion
6 RepliesMarch 30, 2020 at 4:01 pm That shaft log looks like an early Riviera, circa mid 90s, as the bilge is painted grey. From about that time on, Rivieras had/have white bilges. I had a ’98 Riviera 36 and then a ’99 Riviera 43. The same design shaft log was fitted to both albeit different sizes for the different shaft size. The water supply is not there to specifically lubricate the packing but more so to lubricate and cool the forward cutlass bearing located i…Last Post by:
posted: 4 years ago
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Cat 3116 electric fuel pump.
This topic has 3 replies, has 2 voices, and was last updated by
4 years ago March 24, 2020 at 10:27 pm Iāve got a boat I work on with cat 3116 twins. Itās a 36 riviera. The owner was working on it and had to call me in. They do most of there work but had to call me today. Itās been running really rougH after they changed the fuel filters. Seems one engine has a electric fuel pump and one doesnāt. Found this quite odd. The electric fuel pump was put had blown a fuse and when we changed it it was running perfect. Why would they put a electric fue…
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in: All Other Marine Diesels
3 RepliesMarch 25, 2020 at 11:22 am This is the fuel pump. Looking for another one if anyone has seen it beforeLast Post by:
posted: 4 years ago
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Grease fitting or no grease fitting ?
This topic has 9 replies, has 3 voices, and was last updated by
4 years ago March 12, 2020 at 3:44 pm Iām installing a new drive line in a boat. Iāve seen grease fitting in shaft logs. Iāve got a stainless grease fitting. Put it in?? Also where to put it in? Right where the shaft packing material is is my thought.
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in: General Discussion
9 RepliesMarch 21, 2020 at 10:12 am John, As I stated above, be careful with the break-in. first time out be sure to have lots of time to do the break-in. Keep real close track of the temperature of the packing gland. Stop if need to let it cool. As the break-in come along, spray the backing gland with water to keep it cool. Cool meaning below about 140 degrees. Nothing like some pictures to point out all the bad areas on your boat. I will confess, as an old guy, I simply do no…Last Post by:
posted: 4 years ago
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zf 220a reversing input for new used prop
This topic has 4 replies, has 3 voices, and was last updated by
4 years ago February 25, 2020 at 8:25 am I bought a to good to pass up boat on a auction last fall. It’s newton boat with a 300 hp 3116 cat and a zf 220a transmission. It sat for years. probably 10 at least. It 19 hours total on it. To make a long story short the running gear (shaft and prop) are done. With the lack of zinc and maintenance I am replacing both. It has a l/h 21/20 prop. I have found a very good used prop but it is a 21/20 r/h. I’m going to reverse the input…
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in: General Discussion
4 RepliesFebruary 26, 2020 at 3:44 pm Helm is on the starboard side. Just depends on what side you dock though right? It walked A lot though. won’t change but just be opposite. Was looking for confirmation on my logic. Must be a reason there are many more r/h props out there right???Last Post by:
posted: 4 years ago
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Engine flush fittings.
This topic has 10 replies, has 7 voices, and was last updated by
4 years ago
August 16, 2019 at 8:10 am I see Seaboard has bronze in line flush fittings for cummins engines. Is there any more sizes available? I’m looking for different barb end sizes. I have a few boats I work on that I would really like to add the ability to flush easier. Most of the boats are live aboards. 1 1/4 ,1 1/2 1 inch. I probably can cobble something together but those bronze fittings are real nice.
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in: General Discussion
10 RepliesFebruary 14, 2020 at 1:39 pm For some reason the forum won’t allow me to post direct links Try here http://www.marineeast.com/a_sch/sch_lst.asp?cid=1 and here http://www.marineeast.com/a_sch/sch_det.asp?cid=03&pid=03_02 The banjo fittings are bulletproof this where you looked? http://www.banjovalves.comLast Post by:
posted: 4 years ago
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Holy plugged aftercooler!!
This topic has 7 replies, has 4 voices, and was last updated by
4 years ago September 26, 2019 at 7:43 pm This is a seriously plugged aftercooler. Said it was serviced three years ago. Iām questioning that. New one coming from seaboard to say the least. Service them sooner than later!!
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in: General Discussion
7 RepliesOctober 7, 2019 at 7:24 am Well I replaced the aftercooler and the boat ran great. I think itās overpropped but thatās another problem. Looking at everything it was a core failure to me. It came out though it may have been five years since the service on it. Now for a new raw water pump. Iām going to have seaboard t shirts for every day of the week the way things are goingLast Post by:
posted: 4 years ago
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3116 turbo parts
This topic has 2 replies, has 2 voices, and was last updated by
4 years ago September 23, 2019 at 9:27 am I’m in the middle of going through a 3116 cat that I posted earlier in a thread of a boat I picked up in a auction. Seems the turbo sat for quite some time with water in it. Interesting enough it is cleaning up surprisingly well. I need some internal turbo parts. a seal ring and a oring and external gaskets. Having a hard time locating any parts breakdown of the turbo let alone any parts. Any Ideas where I can find some parts breakdowns o…
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in: General Discussion
2 RepliesSeptember 26, 2019 at 8:19 pm I struckout on the turbo parts. Its a discontinued model. Have a new one coming next week.Last Post by:
posted: 4 years ago
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Anyone know what builder of this boat is?
This topic has 3 replies, has 3 voices, and was last updated by
4 years ago September 16, 2019 at 9:06 pm I guess Iām crazy but I picked up a boat in a auctikn last week. Anyone know the builder?
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in: General Discussion
3 RepliesSeptember 17, 2019 at 7:26 am Yes that makes sense. All I had was newt on the old registration. Thank you. Any owners out there want to share info on the them? Seems like a stout boatLast Post by:
posted: 4 years ago
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99 cat 3208ta raw water pump impeller
This topic has 4 replies, has 3 voices, and was last updated by
5 years ago December 18, 2018 at 9:23 pm I’m trying to find impellers for a cat 3208 raw water pump. Browsing around the internet it looks like a 17000p impeller is the right one. Anyone know if that will work? I put it on here rather than call so it might help someone else out.
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in: All Other Marine Diesels
4 RepliesDecember 19, 2018 at 9:20 am I’m not up on exactly when Cat used which pump but the 3208 could take a Sherwood or a Jabsco so check the pump cover carefully for pump ID…Last Post by:
posted: 5 years ago
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Qsc660 hobafter cooler service
This topic has 5 replies, has 2 voices, and was last updated by
5 years ago August 27, 2018 at 2:06 pm Have a pair that need service. I canāt find much info on servicing them. Removing them looks like another kick in the nuts to the engineers at cummins. Not the greatest access on the port side. Can this be done in place relitivly easy? Any tips would be great.
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in: General Discussion
5 RepliesAugust 28, 2018 at 11:04 am Unfortunately you canāt get the bundle out without removing the entire assembly. Yes there is some extra steps to remove the fuel/gear cooler to get to the aftercooler mounting bolts. Remove the seawater plumbing tubes from the gear/fuel cooler but not the oil lines. Then just remove the fuel/gear cooler mount bolts (hint – there should be 9 bolts) and let it drop down so you have access to the aftercooler mounting bolts. Make sure tompre…Last Post by:
posted: 5 years ago
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Qsb6.7 engine throttle sensor fault.
