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- Cummins Marine Forum Topics
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What’s happening here
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago September 29, 2022 at 4:25 pm Background. Fired up motors flawlessly Sunday. Didn’t take the boat out just making sure everything worked as I waited to install new steering. Monday night Ian comes. No major winds here in Big Pine, but tons of rain. Never lost power but I did turn off the breaker to the shore power from Monday evening through Wednesday afternoon. I am sure she pumped a a TON of water, but I have 1000 AH through an inverter providing 120 V to keep…
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in: General Discussion
1 ReplySeptember 30, 2022 at 4:44 am Wiring issues & and a bad battery is where you need to start–Anything that got wet needs WD-40 and/ or white lithium grease on all connections for a start as you sort thru thingsLast Post by:
posted: 1 year ago
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Raw Water Pump
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago June 21, 2022 at 8:08 am Chasing down yet another! warm engine issue on the starboard side. Last time i had this issue was 2018 or so and the 160 Thermo and coolant flushed fixed it.Ā I am out of ideas here except that my Sherwood pump is 6 years old now. Is it possible they wear out internally? Impellers are not damaged when swapping.Ā Boat is usable so it is not affecting my summer, as I dont ever push it but for a few seconds at a time coming home. But i want it fixe…
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in: Cummins Marine Engines
3 RepliesJune 22, 2022 at 7:39 am What’s under the hull for pickup?Ā Has it been checked for any growth/blockage?Last Post by:
posted: 1 year ago
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Black Smoke Sluggish Performance
This topic has 14 replies, has 3 voices, and was last updated by
2 years ago January 6, 2022 at 1:48 pm This isn’t a “what could it be” post. I just wanted to chronicle my last few days for anyone who may need reference Ā Ā Ā Ā Back story. Christmas Eve sunset boat ride with my family and I noted the boat was sluggish on the port motor to come up to cruise. It would get there and WOT maintained it’s 3150 with no loss in speed once at cruise and above.Ā No puffy black smoke and I didn’t check the exhaust directly. I th…
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in: Cummins Marine Engines
14 RepliesJanuary 26, 2022 at 11:52 am Just a follow up.Ā I FINALLY got the air side back on. Needed to order a better set of snap ring pliers. Then still needed the right tool. In this case my wife. To crawl outboard of one of the motors to hold turbo housing in place. And then I did the opposite and she put on the clip ring.Ā After that the rest was smooth. I swapped the top aftercooler bolt for a stud. 100x easier to install. Then buttoned everything up. No leaks I could se…Last Post by:
posted: 2 years ago
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Engine Cleaning
This topic has 2 replies, has 3 voices, and was last updated by
2 years ago September 22, 2021 at 8:21 am Does anyone have a recommendation for what to use to clean the engine/trans? Or do you have a product/procedure you use? I have no need to make it perfect. And aside from pulling the engines, I have no room to do that either. But I would like to use some sort of spray on/wash off cleaner for the block etc. I looked through Tonys Tips but didnt see anything. Also couldnt find anything via a search function.
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in: General Discussion
2 RepliesSeptember 24, 2021 at 6:10 am Iāve had good results with Super Clean on my vehicle engine and with oil clean up in the bilge. Spray on, wash off with water. Make sure there is some air ventilation with the aerosol spray.Last Post by:
posted: 2 years ago
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Quick wire question
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago April 3, 2021 at 1:55 pm Installing a proiso isolator. It’s has sensing wires on the isolator and I need the best place to attach the voltage sending wire from the isolator.
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in: Cummins Marine Engines
2 RepliesApril 11, 2021 at 10:08 am Proiso 23127. 2-in 4-out isolator. DC diagram in simplified form below. Ignition wires on isolator go to their respective engine ignitions and I didn’t draw any switches for simplicity.Last Post by:
posted: 3 years ago
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Cummins 6bta alternator output
This topic has 6 replies, has 2 voices, and was last updated by
3 years ago July 25, 2020 at 1:45 pm Ok. So my generator took a crap. The wife and I both want to build a battery bank to provide for 4 to 5 hours of Air conditioning. Anything overnight we will bring portables as needed. The goal is to keep the kids cool in the cabin while anchored out during evening sunset trips, or reef fishing in silence. I plan to build an 1110 ah bank out of 6v batteries to charge off a designated charger while at the dock. Weight isn’t a concern and I…
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in: General Discussion
6 RepliesJuly 26, 2020 at 6:28 am 46187096 and 46197313. Don’t remember which is port which is starboard. 525 hours. Other then annual belt replacements when I do the impellers, original. Including spinny things. No doubt she’s a mess. I’ve had her 4 years. Looked like this since I bought her. Never put too much thought into cleaning the block or anything as never had any issues.Last Post by:
posted: 3 years ago
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Thoughts on this?
This topic has 8 replies, has 3 voices, and was last updated by
4 years ago December 26, 2019 at 3:57 pm Cruising along no issues and my boost gauge goes all erratic. Reading normal then pegging out. Not concerned that im making that much boost as.im confident something would have went boom, but I’m not sure how the gauge works and wether I should be looking for a ground issue or power/sender issue. I took a short video as I was flushing the motors to show. https://photos.app.goo.gl/B7oGMkGt83WvtkbT9
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in: Cummins Marine Engines
8 RepliesDecember 29, 2019 at 10:32 am Rob Schepis wrote: Not the greatest pic ā¦ Is that a compression fitting that was capped off? Youāll need to look for the boost tubing and see where on the air side it is tied in and go from there. Ok. So color me stupid for the last 4 years of boat ownership, but it’s an oil pressure gauge and not a boost gauge. Wired into the light blue sending wire. I feel like an idiot but at least I know what to replace. None the less thank you for …Last Post by:
posted: 4 years ago
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Best replacement for Racor 1000
This topic has 2 replies, has 3 voices, and was last updated by
4 years ago August 16, 2019 at 6:44 am I was looking at a new filter set up. I never understood what Racor-it-is was, but now I am disassembling my filters for the second time this year to clean gunk from the bowl. I’d much rather just change an entire spin on filter, and im ready to switch over. I do not have room for a dual filter setup. Has to be one filter. What would be the best option for a Cummins 370.
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in: Cummins Marine Engines
2 RepliesAugust 17, 2019 at 9:33 am Can you add this bulk separator ahead of the Racor? https://www.sbmar.com/product/3-premium-extra-duty-bulk-separator-kit-fs19513/Last Post by:
posted: 4 years ago
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Yet another question
This topic has 6 replies, has 2 voices, and was last updated by
5 years ago April 26, 2019 at 4:09 pm Boat was on the hard for 3 weeks. Upon putting back in water coming off plane I decide to pull everything a second time to check that the new shaft seals are good, and the day hatch to check everything out after almost a month. From the starboard ccv filter there is a wafting smoke. Not w ton but noticable. No power loss, but running warm ( the previous warm issue was fixed with new wiring). No loss of coolant. Quick Google search shows possi…
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in: Cummins Marine Engines
6 RepliesMay 2, 2019 at 8:38 am Below is video when warm. No smoke at all when at cruise. Pulled back and at idle and we have no more or less than cold at idle. Port motor makes about the same amount so I’m guessing it’s not a head gasket and is normalish….? I will add I checked oil and no sign of coolant in it. https://photos.app.goo.gl/Hnjme4vtNAVGAfPv6Last Post by:
posted: 5 years ago
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Bypassing wiring harness to temp gauge…
This topic has 3 replies, has 2 voices, and was last updated by
5 years ago March 25, 2019 at 5:49 pm Trying to isolate what I am convinced is an electrical issue causing a high reading on my temp guage. Is it possible to hardwire the guage on it’s own circuit. Running a wire from a known good hot, to the guage. Then another wire from the guage to the sender to a known good ground. Trying to separate the guage and reading from the wiring harness entirely….
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in: Cummins Marine Engines
3 RepliesMarch 26, 2019 at 4:14 am You’re covering your basis…Last Post by:
posted: 5 years ago
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Changing from Walker AirSep
This topic has 14 replies, has 7 voices, and was last updated by
5 years ago February 22, 2019 at 12:23 pm All,, specifically Tony, My March upgrades to go along with maintenance include a CCV system for the engines. I currently have a Walker Air-Sep. In reading I would like to eliminate them entirely. My question is what would be the replacement. If a CCV kit was ordered and I indicated I did not have a pre-existing Airsep kit would it include new filters?
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in: Cummins Marine Engines
14 RepliesMarch 26, 2019 at 4:09 am Mike Pettee wrote: I filled using the marks on the stick. Possible us overfilled? Yes. Have you seen this? https://www.sbmar.com/articles/oil-pan-capacities-for-cummins-marine-engines/Last Post by:
posted: 5 years ago
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Help me out here…
This topic has 4 replies, has 3 voices, and was last updated by
5 years ago
January 13, 2019 at 3:03 pm Cummins 6BTA. 380ish hours Running perfectly with no issues. Racor 1000s had some gunk in the bottom so I pull it apart, clean it, change filter and replace filter. Fill the racor, and go to prime and she doesn’t seem to prime. Fire her up and she doesn’t like it. Runs for a few then sputters out. Only thing I touched was the filter. I took the below vlinked video cause it shows the sound I’m getting when I’m priming…
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in: All Other Marine Diesels
4 RepliesJanuary 21, 2019 at 8:17 pm I had a cracked 5 cent oring on the t handle that had me stumped for hours, she would prime and start but would sputter out after a while.Last Post by:
posted: 5 years ago
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Running hot. No overheat.
This topic has 20 replies, has 6 voices, and was last updated by
5 years ago
June 23, 2018 at 2:52 pm Can someone give me some info on what this symptom may lead too. Starboard engine running a steady 10 degrees hot. Across the board but does not throw an overheat alarm. Port runs just under 190 at cruise but the starboard will stay just under 200. At troll or idle, 180 on port, 190 on starboard. No alarm. No steam. No other symptoms. No strange smells or sounds. After coolers brand new less than 2 yrs ago. Fresh water flushed each use. …
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in: Cummins Marine Engines
20 RepliesAugust 7, 2018 at 9:08 am Tony, would you recommend the 160 thermostats for a boat that spends 3/4’s of it’s running time at a 600 RPM idle? I’d also add that this is on lake Michigan where water temps rarely reach 70 degrees.Last Post by:
posted: 5 years ago
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Bolt ID
This topic has 1 reply, has 2 voices, and was last updated by
5 years ago July 25, 2018 at 6:21 pm I dropped a bolt into no man’s land. Im looking for the correct size flange bolt that attaches the bottom of my alternator to the alternator brace. I believe it’s part number 3902460, (#6) which is an m10 x1.5×25. Going to get replacement tomorrow just want to be sure.
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in: Cummins Marine Engines
1 ReplyJuly 27, 2018 at 3:55 pm Seems right to me. TonyLast Post by:
posted: 5 years ago
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Post Hurricane Irma issues
This topic has 16 replies, has 3 voices, and was last updated by
6 years ago November 21, 2017 at 4:54 pm Hi all. Boat survived Irma with some dock rash, somehow. House is a different story. First trip today, and first time shes moved and ran in about 3 months. Dodged downed trees, fences and trailers in the canal but made it out. Sluggish getting on plane, but ran out fine otherwise. Accredited this sluggishness to sitting three months and needing filter changes. Coming back however the starboard motor started smoking. Dark smoke, and would not …
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in: Cummins Marine Engines
16 RepliesDecember 19, 2017 at 11:46 am And winner. With a new clamp on that hose, no smoke. Thanks all for your help!Last Post by:
posted: 6 years ago
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Chatter
This topic has 2 replies, has 2 voices, and was last updated by
6 years ago June 11, 2017 at 2:30 pm ZF 220. Developing a chatter noise in neutral and idle forward. It does not do it in reverse. No loss of performance, and it does not appear to be slipping.
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in: Marine Transmissions
2 RepliesJune 11, 2017 at 7:20 pm I have not noticed any other sounds at shutdown or otherwise. Both my engines seem to idle low (sub 550ish per tach, with the port engine being lower thab stbd. I usually bump them to 650 to 700 for my idle speed through the canal. At 660 to 700, the chatter is not existent. I will get in there and get pics the best i can. No dust or anything that i noticed.Last Post by:
posted: 6 years ago
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Steam/Running hot
This topic has 16 replies, has 4 voices, and was last updated by
7 years ago February 13, 2017 at 6:27 pm Hi all. Port engine started running warm today. Never set off any alarms. Never topped 200. But i noticed what i first throught was smoke from exhaust. It dissipated almost immediately, Ā which leads me to believe it was steam. This occurred at speed cruise rpm of 2600.Ā No loss of power. No adverse running issues. Ā When i get to dock, Ā i put it on the hose (fresh water flush setup), and the hose, which normally flattens due to suction from the p…
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in: Cummins Marine Engines
16 RepliesApril 29, 2017 at 7:08 pm Was a finally quit and pay someone to do it deal…..Last Post by:
posted: 7 years ago
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Oil leak help
This topic has 3 replies, has 2 voices, and was last updated by
7 years ago January 31, 2017 at 3:38 pm I found this after my last run. Starboard side. It is directly in line with the dipstick location, but on the other side where there is just a plug.Ā The plug does appear to be leaking. It only leaks when running, which I am attributing to oil sloshing, boat angle, etc.Ā Is there a specific part number to replace a seal, or is it just a tighten it up deal? It appears to be quite a bit of oil. Ā There appears to be no additional leaking. Runs fine…
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in: Cummins Marine Engines
3 RepliesFebruary 1, 2017 at 6:02 am Thats exactly what i was looking for. Ā Thank you. Is the oil level at rest over that bolt, or can that be swapped without draining.ĀLast Post by:
posted: 7 years ago
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Belt change 02 370s
This topic has 4 replies, has 2 voices, and was last updated by
7 years ago November 19, 2016 at 5:27 am This is basic stuff, but I was hoping someone could walk me through the process. I’m pretty mechanically inclined, changing after coolers and the raw water pumps, but I was able to do so by following articles. Replacing only belts for now, no tensioners yet, unless I find they need it when I get in there. Just want to make sure I do it in the proper way in case there is some strange outlying item I can mess up.
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in: Cummins Marine Engines
4 RepliesNovember 23, 2016 at 7:12 am Thanks for the pics. Ā Yeah the Cummins serp belt is a decent setup to swap out, much better than the double V-belts on my prior Yanmar 6LP, matched set or not those double V-belts just never seemed to get along with one another! Great that you have the room in front of the engine to do the idler pulley upgrade at some point. Ā Good to hear that all sounds good up front for now but remember “preventative maintenance” Ā is addressing som…Last Post by:
posted: 7 years ago
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What’s happening here
