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- Cummins Marine Forum Topics
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QSB 5.9 oil drain line fitting size
This topic has 2 replies, has 1 voices, and was last updated by
1 year ago
May 24, 2022 at 8:56 pm Been searching but I donāt see a clear answer. Iām trying to connect to the standard blue oil drain line but am unsure the fitting size and thread type. Can someone answer? Ā thanks
2 RepliesJune 2, 2022 at 12:43 pm That wasn’t it. The right answer is 1/2″ NPT.Last Post by:
posted: 1 year ago
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Mini command error code
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago
June 1, 2022 at 7:47 am Anyone know what this code is the engine wonāt crank. The fuel pump turns on and so does the screen but not crank to engine. Yes battery is good.
2 RepliesJune 2, 2022 at 4:15 am Zf fontrolsĀ Cummins qsc 286a transmission Tony can it be the neutral safety switch? All the wiring is fine and all has power the default codes were from me removing the I switched wires from engine and battery for weeks Iām assuming I reset the mini command and it no longer shows errors or codes so this issue Iām assuming is seperateLast Post by:
posted: 1 year ago
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qsm11 405hp
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago
July 10, 2020 at 9:16 am hello I have a qsm11 with the lower 405hp rating with 8000 hours. it is in a commercial scallop boat with a 3to1 gear and is more than enough power for the application. upon return from a 20 hour trip this morning, I noticed oil in my overflow coolant bottle. I know everyones first thought is head gasket but this motor has never ever gotten hot, its raw water cooled and I have never seen it go above 182 degrees. the boat is a non planing novi …
3 RepliesJune 2, 2022 at 1:16 am What was the result of the oil in the coolant.Ā Head or oil cooler? GregLast Post by:
posted: 1 year ago
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Wiring direct to battery or incorrect
This topic has 5 replies, has 3 voices, and was last updated by
1 year ago April 3, 2022 at 11:56 am Yet again another question everyone. These wires are wired directly to batteries.Ā <br /><br />talking about the white abs black wiresĀ 1) what are they for 2) do they need constant power or can I run to my panel on my blue seas bar
5 RepliesJune 1, 2022 at 6:36 pm QSB 5.9 SmartCraft ECM, Electronic Components, and Wiring Harnesses The power studs must say commect to “always on power” Get all 100% clean and greased.. Lose power here or have something less than a 100% connection,Ā and you will shut down or get faultsLast Post by:
posted: 1 year ago
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What parameter runs about 102 degrees?
This topic has 7 replies, has 4 voices, and was last updated by
1 year ago May 26, 2022 at 9:59 am Got most all of the desired parameters showing correct on a new VV 502 but the manual doesnāt explain very well. Iāve got one parameter that on a normal cruise shows 102, itās labeled water temp but I know thatās not outside water temp which here is more like maybe 70.Ā <br />can anyone suggest what might normally run about 102 to help me decipher what it could be?
7 RepliesJune 1, 2022 at 3:51 pm When I said the sensors were connected behind the VV displays, they were actually connected to the harness.Ā I attach a couple of photos that I took when sorting these out.Ā FYI, that boat had triple Cummins QSC600 engines driving Zeus drives, hence the 3 displays.Last Post by:
posted: 1 year ago
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1998 CTA 8.3 M3 pre-purchase survey
This topic has 5 replies, has 3 voices, and was last updated by
1 year ago
June 1, 2022 at 4:04 am S/N 5588627, 468 reported hours. Twin Disc Trans. This is on a 1998 Hinckley Talaria that has reported had only very light use over two owners. I have am familiar with 6BTs, (and I buy the service parts for them from you) but not CTAs. It is mechanical and I like that, and I understand the “marine age” concept, so I am moving carefully. I have not been to the boat and these images are from the local broker. I will be there in ten day…
5 RepliesJune 1, 2022 at 10:47 am Thanks Neto, I imagine the clamps and also the hoses…Last Post by:
posted: 1 year ago
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Relocating oil pressure sender.
This topic has 12 replies, has 5 voices, and was last updated by
1 year ago
November 4, 2019 at 8:05 am Cummins 6BTA-5.9, mfg 1998. I am removing the fuel cooler and fuel block and am following the video provided by SB Marine. Moving the oil pressure sender seems pretty simple but unlike the video with one sender, I have an additional sensor. I think I spotted two hex head plugs, in the area where I would relocate the sender. My question is, are these two ports equal and is this where I need to place the second sensor? I am not at the boat now so …
12 RepliesJune 1, 2022 at 8:50 am Rob, Thanks, I confirmed I have 1/8″ npt but only 2 gallery ports both tucked up behind the RW pump and stop solenoid. If I cant get to those easily (thinking I cannot), any issue wiring the alarm sender to the top of the oil filter housing?Ā TYLast Post by:
posted: 1 year ago
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Won’t get on plane
This topic has 11 replies, has 3 voices, and was last updated by
1 year ago May 30, 2022 at 3:34 pm Ive got a pair of 2000 6ctas in a boat that I bought as a project.Ā Engines start and run fine although port now idles 200rpm below starboard and has less power.Ā Both engines will spin in neutral up to 3k rpms but under load port wont go past 1400 or so.Ā 650hrs on the clock and I do not know prior history.Ā I have a spare 100hr 6cta that I bought for parts so I have turbo, coolers etc.Ā What should I look for first?Ā There doesnt appear to be …
11 RepliesJune 1, 2022 at 4:32 am A clogged aftercooler IS an engine performance issue.Ā As he and I both posted – the aftercooler needs to be pulled apart on the bench.Last Post by:
posted: 1 year ago
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480CE idle/stumble/stall upgrades
This topic has 4 replies, has 5 voices, and was last updated by
1 year ago May 26, 2022 at 6:42 pm I have 480 6cta 8.3 m4. My port engine stall as you engage into gear moving forward or reverse. If you bump the shifter several times to get the props spinning then it will go into gear without stalling Ā I replaced the ecm thinking that would fix it but it did not. Once the boat is moving there are no issues until you put back in neutral and try to engage back into gear. Ā Any ideas what else could be causing the stalling issue?Ā Ā Thanks for any …
4 RepliesMay 31, 2022 at 4:21 pm This a list of the ECM “fixes”Last Post by:
posted: 1 year ago
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Second Alternator bracket and pulley
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago
May 30, 2022 at 2:28 am Hello. Ā Looking for a Bracket to mount a second 22si alternator to my QSC 490. Ā This is a single engine application. Ā Does anyone make a off the shelf bracket? Thanks Kane
2 RepliesMay 31, 2022 at 5:12 am Ok Thank You. Ā Looks like itās all a custom applicationĀLast Post by:
posted: 1 year ago
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155 IMT
This topic has 3 replies, has 2 voices, and was last updated by
1 year ago May 29, 2022 at 11:42 am Hi UK based so really need your help as rare engine hereĀ QSB 5.9 2012 200 hours Take her out for first time at 75% throttle 22 kts 175f coolant both enginesĀ 2800 rpm no issue sitting on plane. Vesselview 155 IMT – throttled back 10 times but repeated. Port 10-20 degrees hotterĀ Engineer suggested wastegate may be stuck / corroded as boat been on unused for 12 months and on river for next 12 months @ max 5 ktsĀ This is what we were told w…
3 RepliesMay 30, 2022 at 4:31 pm Be concerned with this.. Nothing else at this point. Cummins Marine Aftercooler MaintenanceLast Post by:
posted: 1 year ago
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2002 Cummins 480 CE Data Link Inactive Message
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago
May 30, 2022 at 2:57 pm Hi everyone, over the weekend I lost my port side engine to a ādata link inactiveā message displayed on my Cummins display. Engine will now crankĀ and not start. The pcm connectors are clean and tight, the big rectangle serial connector at the back of the engine is clean and tight, that harness has the twisted wires all the way up to the display. I found a reset breaker on the engine that had a broken wire fixed that, that has battery voltage now…
2 RepliesMay 30, 2022 at 4:25 pm Fully understand, Iāve gone through every stitch of paper I got with the boat, none of which have a wiring diagram for the engine harnesses. That would be extremely helpful to haveĀLast Post by:
posted: 1 year ago
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6cta loss all power after wot
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago May 26, 2022 at 1:21 pm I just redid the injector pump and injectors. Everything went good and smooth until wot then it died out and wouldnāt go above 550 rpm. It was blowing white smoke out the exhaust and crank case breather. I blamed the injector pump timing slipped. I canāt get the timing pin on the engine to move again. I went with calling the over lap between exhaust and intake as tdc. Still nothing. Some people thought it was a blown turbo. Would that stop it fr…
2 RepliesMay 29, 2022 at 4:24 pm 1——-Your engine needs no turbo to start and run up to at least 2000++ in neutral and it wouldĀ seem normalĀ That is not you issue–Clark hinted the same. Ā Ā 2————–Why was the pump & injectors re-done? Just curious. Ā Ā 3———– If it ran good up your the WOT thing, the issue kinda sounds the like the pump injection pump based on the the work you just had done.…Last Post by:
posted: 1 year ago
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2004 Cummins QSB 5.9 – LOSING GAUGES
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago
May 26, 2022 at 6:48 am so far we removed the motor plug to the gauges, found some corrosion in the pins, cleaned them, have a lose pin, going to tighten that next – when the gauges go out we lose the oil pressure, volts, tach and fuel flow stops recording usage – motor has Smartcraft gauge cluster – replaced the Cummins Marine Harness SmartCraft V1.0 “Medusa” – replaced Cummins Mercury SmartCraft Tachometer Harness 84-879979T1 ̵…
1 ReplyMay 28, 2022 at 4:08 pm Check the power supply , the 12VDC and its grounding.Ā Often the actual 12V power is Daisy chained from guage to guage.Ā Ā Ā If those connections are poor then thenĀ none of the guages CAN operate properly.Ā Ā Cary on with the signal wire connection checking , sure, but be sure the guages CAN do their jobs. The fact that all of them are doing it together would indicate to me that the 12V and grd. are more likely even though you found someĀ …Last Post by:
posted: 1 year ago
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Which 6BTA is this?
This topic has 4 replies, has 4 voices, and was last updated by
May 24, 2022 at 9:46 am I have twin 6BTA’s in my 2001 Grand Banks.Ā The engne plate has conflicting information on it –Ā Engine is identified as a 6BTA 220 CPL# is 2891 which is usually a 210 How can I tell so I can use the right performance and fuel curves? Ā Thanks!
4 RepliesMay 27, 2022 at 8:03 am That uprating from 210 to 220Ā HP is a paper change, not an actual engine change. The 220 is METRIC HPĀ Ā which is a nonesense rating.Ā Legitimate yes under SPECIAL circumstances. Ā It looks better on a spec. sheet. We saw the same nonesense with cars years ago with Brake HP, SAE HP, and so on.Ā Ā THey were all legitimate ratings intended for different testing purposes and different results but of course what did the sellers use, the highes…Last Post by:
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NT855 cold start valve
This topic has 5 replies, has 2 voices, and was last updated by
May 23, 2022 at 12:30 am I have a client with and NT855. I’m unfamiliar with these engines and the client managed to fill the sump and 2 combustion spaces with diesel by playing with what he calls the cold start valve on the fuel pump. Have removed fuel units , sucked out fuel and performed top tune but engine is smoking badly. Question, does this “cold start valve” need to be turned fully clockwise or anti clockwise for normal operating conditions. Th…
5 RepliesMay 27, 2022 at 7:34 am I am glad you got it sorted.Ā Ā Ā I don’t know how much info got through to you but I guess enough.Ā Ā Good.Last Post by:
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6Bta oil blow by back into the turbo
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago
May 25, 2022 at 7:27 pm Hi i have a 6bta 330hp- i am getting blow by back via the return to the turbo Engine runs fine no miss at all,Ā what could it be ( head Gasket) tx terry
2 RepliesMay 26, 2022 at 9:08 pm Tx, I will take some pictures I purchased the boat dec 2021, it had a new turbo fitted ( both engines) engine hours approx 800 the boat had sat around for about 2 years, but started regularly, no sign of any oil leaks prior to trip, we brought the boat down the coast & had oil going back into the turbo intake, so only used 1 engine & just used the 2nd engine for docking engine doesn’t seem to miss at all, blows blue smoke tx terry …Last Post by:
posted: 1 year ago
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Oil Leaking from engine mount bracket 6bta370
This topic has 5 replies, has 4 voices, and was last updated by
May 25, 2022 at 3:58 pm Hello everyone, I have a 6bta 370hp engine with oil leaking from the engine mount bracket underneath the sea water pump. I don’t see the oil leak at the gear, only underneath the mount. And it’s a pretty steady drip. Leaking after a 5hour cruise.Ā
5 RepliesMay 26, 2022 at 6:29 pm Hard to tell from pics Aside from RW pump gasketā¦ If your belt cover is off check that the bottom bolt on that side was shortened and torqued Also check tappet cover gasket behind injection pumpā¦can drip down<br /><br />Last Post by:
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6BTA 5.9 coolant drain procedure
This topic has 6 replies, has 6 voices, and was last updated by
March 12, 2019 at 9:13 am Hi, Relatively new to diesel maintenance so please forgive me if this question is a little basic for this forum. The water heater on our boat is leaking and I’ve ordered a new unit. Before beginning the replacement I want to make sure that I understand the procedure for properly draining the coolant and replacing it so as to avoid air pockets. I know that I could probably avoid draining all of the coolant but since I do not know when the…
6 RepliesMay 26, 2022 at 8:24 am I will mention what I did when I first got my engine many years ago. See attachement.Last Post by:
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Raw water chemical flush QSC 8.3l
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago May 25, 2022 at 7:08 pm I just purchased a CABO with these motors and my survey recommended I do this flush. I donāt have sea strainers so how do I get the barnacle buster into the system safely? Thank you.
2 RepliesMay 26, 2022 at 6:38 am If you want to see a video of what Rob is recommending you can go check out Mikelson Yachts Youtube.Ā I am challenged right now in getting url links to post so I will just write the name of the video to watch. “What engine zincs look like after a year and a half with a fresh water…….”Ā Forgive Sam for getting some of the part names incorrect but you see where the connections are made and how they run Barnacle Buster throu…Last Post by:
posted: 1 year ago
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QSB 5.9 oil drain line fitting size
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