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- Cummins Marine Forum Topics
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QSC 8.3 Engine Block Heaters – Voltage?
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago December 27, 2021 at 2:00 pm Hello!Ā I have two QSC 8.3 engines and am seeing repeated failures of the block heaters.Ā Tehy are wired to the 240 Volt side of my panel on my boat.Ā If I look up the part numbers online, the images all show 120 Volt plugs.Ā I wonder if the boat OEM made a mistake…does anyone know (of can point me to the spec) the voltage spec on the Block Heaters?Ā Ā 3905114 – Cable<br />4935058 – Heater, Engine THANK YOU!
1 ReplyDecember 29, 2021 at 7:08 am The coolant block immrsion style heaters Cummins supplies are (IMO) not safe and unreliable..Ā Buy stick-onĀ OIL pan heaters–120VĀ 250W for each engine . Run them 24-7 with breaker to turm them off when not neededLast Post by:
posted: 2 years ago
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Oil report shows sodium, Pottasium, Iron, Aluminum
This topic has 10 replies, has 4 voices, and was last updated by
2 years ago
December 22, 2021 at 4:36 pm Got my oil report back. Thees are the comments. UNKNOWN HOURS ON THE OIL. SODIUM AND POTASSIUM ARE ELEVATED. NO GLYCOL/WATER DETECTED. IRON IS HIGH AND MAY INDICATE CYLINDER WEAR. ALUMINUM IS HIGH AND MAY INDICATE PISTON WEAR. CUT OPEN FILTER(S) AND INSPECT FOR DEBRIS. PRESSURIZE COOLING SYSTEM TO CHECK FOR POSSIBLE SOURCES OF COOLANT ENTRY AND REPAIR AS NECESSARY. The engine has 70 hrs since I did a major service. AC serviced with new housing, …
10 RepliesDecember 28, 2021 at 3:25 pm I agree that you need to become familiar with all the guages and the normal reading when all is running well.Ā I keep a mini log , separate from theĀ mainĀ mtce. log, of readings that over time have told me very clearly what the readings should be if all is well. RPM, eng. hrs, oil press, coolant temp, voltage, gear oil press.Ā Add what ever you have. One shot tests should not always be taken at their face value.Ā Ā Tests can be contaminated easi…Last Post by:
posted: 2 years ago
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Experience of running aground with Zeus
This topic has 9 replies, has 6 voices, and was last updated by
2 years ago
July 20, 2019 at 3:24 am Hi! I have just had the experience of running (or actually my dad run it) my Zeus 3000 pods aground and I’m looking for some experience from other doing the same on what to expect from repairs. The port pod where hit 5 knots almost above the skeg. This resulted in the skeg being lost, one propeller damaged, the flap piston being broken off but most severe – the boat started to leak a lot due to that the pods moved in it fittings arou…
9 RepliesDecember 27, 2021 at 6:20 pm The trim tab ram weld on my 2012 Riv 4400 has just failed – prop damage can be repaired and limited to rear smaller prop only – new ram attuators x 2 ordered but there goes 2 months of summer boating. Half way 90nm into trip to Robe – 9 hours slow trip back on one motor. Cummins in SA are very helpful but have not done this work as I think we have the only boat with Cummins Zeus 3000 pods here. I am looking to buy a service man…Last Post by:
posted: 2 years ago
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Kinked wire reinforced hose
This topic has 3 replies, has 3 voices, and was last updated by
2 years ago December 21, 2021 at 9:50 am After I serviced my aftercoolers I had to kink and bend the wire reinforced hose that runs from the raw water pump to the aftercooler in order to get it over the nipple. Once it was on it was nice and straight but I’m worried that kinking the hose caused damage. Is this a problem or can this kind of hose tolerate a kink?
3 RepliesDecember 26, 2021 at 7:59 am No way to tell without hose in hand. It’s cheap and easy, just change it out with a non-wire high quality marine hose such as the Shields 200 series. No need for wire reinforced there.Last Post by:
posted: 2 years ago
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Oil Analysis 5.9 6BTA
This topic has 12 replies, has 7 voices, and was last updated by
2 years ago
December 3, 2021 at 12:08 pm Hi I own a 2005 Meridian 459 with twin 5.9 6BTA engines just under 2 years. I just received a recent oil analysis report that doesnāt look too good on my port engine. The engine has 794 hours with 142 hours on the oil (Rotella T4 15-40) The boat always seems to run great and operates consistently during various RPM on both engines staying in the 170-180 temperature range. Before I speak to the marina service department or if someone has a rec…
12 RepliesDecember 24, 2021 at 5:34 am Not to derail, but I run my engine every day, change oil, filters etc etc. This is my sample. What say you?Last Post by:
posted: 2 years ago
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QSB 6.7 Crankcase Pressure Fault 1942
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago
December 16, 2021 at 9:44 am I have a code 1942 which would indicate a crankcase pressure fault. Iāve changed the sensor and the filter. The fault remains. Suggestions?
2 RepliesDecember 24, 2021 at 3:59 am Thanks. Iāve visually checked the wiring but nothing obvious sticks out. Is it possible that this code needs to be cleared with an interface? I say that because the fault will come on with the key turned to on without the engine running. So it wouldnāt be reading actual crankcase pressure at that point.Last Post by:
posted: 2 years ago
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QSB5.9 Aftercooler Maintenance
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago December 22, 2021 at 11:47 am It’s time to service my Cummins aftercooler. Does the #5 Kit: QSB 5.9 Seawater Side Aftercooler & Heat Exchanger Maintenance Kit include all O-rings needed to rebuild the aftercooler? Are there other parts and pieces I should purchase prior to starting this project? Thanks Zora Neale
1 ReplyDecember 22, 2021 at 6:30 pm YES–Has all you need but your “elbow grease”..Last Post by:
posted: 2 years ago
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AUDIO ALARM on ZUES POD DRIVE BOAT
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago December 12, 2021 at 7:42 am Im getting an audible alarm when accelerating through 1400 and continues until power is reduced below that rpm on a 2019 42′ Sabre Express. All engine gauges are within perfect operating levels and there is no visual alarm on the Cummins helm display. What is causing this alarm? Can anyone help….thanks, Stephen
1 ReplyDecember 22, 2021 at 5:52 pm An audiable alarm comoing from what device? Post a good picture the the engine controls/system and your displays “turned on and the engines running..Last Post by:
posted: 2 years ago
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2007 QSC 8.3 slow start up
This topic has 3 replies, has 3 voices, and was last updated by
2 years ago
December 20, 2021 at 1:35 pm 2200 hours on both motors. Port side takes an extra 7 to 10 seconds to start and runs a little rough for about 10 seconds. it also runs a few degrees hotter than the starboard side. Both motors idle around 800 RPM. Not sure if that is high or normal. Any ideas where to look to correct the hard to start issue? Starboard motor starts and runs great.
3 RepliesDecember 21, 2021 at 5:41 pm Idle should be 600 rpmLast Post by:
posted: 2 years ago
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6CTA aftercooler/hx helpful tool
This topic has 1 reply, has 1 voices, and was last updated by
2 years ago
December 21, 2021 at 2:35 pm Crested a tool out of necessity to remove stubborn 6CTA aftercooler cores and to put the spring back in heat exchanger endcaps. Buy a 4ā pvc coupler. Itāll be a tad too big for the aftercooler housing. Use a circular saw or mitre saw or table saw and make one pass through it. Now when you squeeze it together itās the perfect diameter if you need to use force with a block of wood to drive the aftercooler core through until the ends clear the …
1 ReplyDecember 21, 2021 at 2:39 pm Hmm. Picture I attached didnāt upload. Let me try again.Last Post by:
posted: 2 years ago
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QSB service West Coast FL
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago
December 20, 2021 at 4:38 pm I am buying a 2017 Sea Ray Sundancer 460 with 500 hr QSBās. Looking for a recommendation on someone who understands āmarine ageā and follows Tonyās procedures to do possible survey and ongoing maintenance etc. Thx
1 ReplyDecember 21, 2021 at 9:02 am I use Don Derudder from M.A.L services. 239-633-6862 Punta Gorda FL. In my opinion the best in the area.Last Post by:
posted: 2 years ago
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BT6 mid speed black smoke
This topic has 4 replies, has 3 voices, and was last updated by
2 years ago
December 19, 2021 at 9:18 pm In May I bought a Riviera 3300 with twin BT6 engilo o wanes. 1993 but only 10001000 hours on them. Had a pre purchase mech survey and oli analysis. Clean bills of health apart from corroded heat exchangers which were replaced with new. Covid arrived and we could not go to the boat for 4 months. On first use after the port engine would initially not rev past 1500 and blew clouds of black smoke at that speed. Cleared after a few minutes but since…
4 RepliesDecember 21, 2021 at 4:34 am First thing I did is slip the boat, clean and antifoul with propspeed apied to props and shafts. Same before and after slipping. So clean Properly cleanLast Post by:
posted: 2 years ago
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Use Barnacle Buster?? 2006 QSB5.9-380
This topic has 8 replies, has 7 voices, and was last updated by
2 years ago
December 14, 2021 at 1:28 pm I want to do a Barnacle Buster flush on my motors but am worried about the chemicals making it “too clean” and maybe causing an internal leak at the fuel coolers or aftercoolers. I read one post and after a BB flush the person had water in his fuel due to a leak in his fuel cooler. My raw water system was relatively clean during the last cummins engine service about 2 months ago but that doesn’t protect me from a failure. …
8 RepliesDecember 20, 2021 at 7:14 pm I have used Rydlyme at the end of the season and when I take my coolers apart they look new. It will not cause leaks because it only gets rid of the marine growth and will not hurt parts. They show a man pouring it in his hands while holding a clam shell. I did it as a test and it dissolved the shell and did nothing to my hand.Last Post by:
posted: 2 years ago
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First look at zincs since major refit 1-1/2 years
This topic has 2 replies, has 3 voices, and was last updated by
2 years ago December 18, 2021 at 5:01 pm I pulled my zincs today after 1 1/2 years of use, since the major overhaul. They look basically new. The one at the bottom of the after cooler has a white chalk coating it that come off easily. I put an endoscope in the top and bottom of the after cooler. Sam white chalk at the bottom, the top looks pristine. I freshwater flush every time the engines are started. Because of the exhaust design, my flush is pure fresh water and that’s what s…
2 RepliesDecember 20, 2021 at 5:01 pm It is very important to service the coolers even if they look clean. You canāt tell what is happening between the core and the housing. Pressing out the core , cleaning the housing and lots of grease is necessary to keep them healthy.Last Post by:
posted: 2 years ago
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6CTA plug not connected, what is this for?
This topic has 8 replies, has 5 voices, and was last updated by
2 years ago
December 18, 2021 at 3:20 am Working on my project boat (3500 Tiara Express) I found two connectors on very near each engine harness that are not connected.. My guess these are for air heaters that were not in use? If so, I live in Puerto Rico so these are probably not needed..
8 RepliesDecember 19, 2021 at 3:18 pm Thanks everyone, its good that they aren’t 6CTA, I didnt see on the wire harness sold here but just wanted to make sure… i will trace those wires and will get to the end of it…Last Post by:
posted: 2 years ago
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SMX 1730 Seawater Pump maintance
This topic has 3 replies, has 3 voices, and was last updated by
2 years ago December 13, 2021 at 9:18 am I installed this pump on my engines during my major service of the engines last year. What is the recommended service to the pump at what intervals. Diamond 450 engines, recreational use about 70 hrs per year.
3 RepliesDecember 19, 2021 at 6:07 am Doug, have you done an impeller change yet? Not sure it’s worth the $ savings to put the same impeller back in once it’s “in-hand”. But, yes, everyone weighs “parts money” vs “their time/bloody knuckles” differently so you’ll come up with your plan in due time..Last Post by:
posted: 2 years ago
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QSC 540 expansion tank bubbles with video
This topic has 2 replies, has 3 voices, and was last updated by
2 years ago
December 18, 2021 at 2:00 pm To further a previous postā¦ Ran the boat in our annual Xmas parade. Boat ran fine an most of the night was spent at idle or under 1000 rpm. Upon return I found coolant leaking into the bilge from the coolant in pipe to HX after thermostat. The plastic overflow tank was full upon return and some of the coolant returned to the engine once cooled. I figured it was the leak that caused the plastic tank to fill. I fixed the leak by draining down …
2 RepliesDecember 19, 2021 at 5:34 am We have a QSC500 and FWIW I can confirm that it takes quite a few engine hours after a coolant change before the level settles. Last time we did this I was actually about to take the turbo off as I suspected loosing coolant through the infamous exhaust to turbo gasket…when the “loss” of coolant finally stopped. However your initial problem seems more to have to do with building pressure in the cooling system. No experience with…Last Post by:
posted: 2 years ago
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speed sensors again
This topic has 5 replies, has 3 voices, and was last updated by
2 years ago December 16, 2021 at 12:06 am I run 2 -1999 6bt 370,s I hope this explains my situation better than last time. Both tachos died within a few hours of each other. Sofar the wiring is standing up to testing. Not sure if the magnetic speed sensors die in these motors they are solid state no moving parts so should be pretty reliable. The tachos light up and have voltage to them as dothe speed sensors. Can anybody point me in the right direction Cheers thanks Bruce
5 RepliesDecember 19, 2021 at 5:33 am The grey wire is in the engine harness and ends at the sensor plug.Last Post by:
posted: 2 years ago
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Coolant expansion tank overflow QSC
This topic has 5 replies, has 4 voices, and was last updated by
December 12, 2021 at 1:49 pm Last night during our annual holiday parade I noticed my coolant expansion bottle was full and overflowing into the bilge. Boat was only run at 1000 rpm or less and temp never got over 165. Have never had this happen. Any ideas and where to start for correcting the issue. Never had an overheat. 1800 flawless hours. Thanks Mike
5 RepliesDecember 18, 2021 at 6:55 pm JMO but when I have work to do on the coolant side I drain all of it. That way no surprises. Depending upon the engine and installation you may still have a small quantity escape. Actually I do the same on the raw water side although that is not quite as clear cut.Last Post by:
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6bt speed sensor outputs
This topic has 4 replies, has 4 voices, and was last updated by
December 12, 2021 at 10:58 pm Hi does anybody have the outputs for a 6bt tacho speed sensor in Ohm or vdc Cheers thanks Bruce
4 RepliesDecember 18, 2021 at 6:26 pm EDIT: I just saw the other post but will address this here also. I will copy it and post it in the other thread also. THe sensors are not a resistive device. THey are an inductive device. Means as the flywheel rotates each flywheel tooth passes the sensor then it induces an electrical impulse in the sensor. That signal or pulse is not very strong so the wiring to the tach must be in good shape, all connections clean and tight, sensor…Last Post by:
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QSC 8.3 Engine Block Heaters – Voltage?
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