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This forum contains 1,550 Topics, 9,195 Replies, and 4,640 Contributing Members.

Viewing 20 topics - 1 through 20 (of 1,550 total)
    • Cummins Marine Forum Topics
    • Engine Blankets for Noise Control

      This topic has 4 replies, has 3 voices, and was last updated by Justin Murphy 16 hours ago

      June 25, 2018 at 8:21 am I have an engine box model of the Albin 28 with a 370hp 6bta. Unfortunately the nature of the boat is that it will be somewhat loud but wondering if you guys recommend any blankets for the motor to help? I have good sound deadening on my engine box and underneath the deck in most places, the air intake is under the gunwale so not much to do there. Would a manifold blanket and a turbo blanket do anything or is it the injectors and pump that c…

      Started by:  Justin Murphy in: Cummins Marine Engines


      4 Replies
      June 24, 2019 at 6:34 pm Any update on this? Trying to quiet this baby down a bit. Turbo silence ring for this motor? Thanks. Cactus

      Last Post by:  Justin Murphy posted: 16 hours ago

    • Low Voltage Gremlin

      This topic has 7 replies, has 3 voices, and was last updated by Justin Murphy 16 hours ago

      May 23, 2019 at 5:41 am I have single 6bta with the analog panel. I have run into an erratic low voltage and trying to trace it down. When the problem arises, I show about 8-10 volts on my cummins gauge panel and the starter will click or barely turn. What I’ve done so far: New batteries, new starter cable to batteries, new magnetic switch and cleaned, re-sealed heat shrink connectors on wires, good grounds (new from starter to trans, the trans to battery is…

      Started by:  Justin Murphy in: Cummins Marine Engines


      7 Replies
      June 24, 2019 at 6:31 pm An update on my situation, I had two issues going on, about three feet of battery cable that wasn’t replaced with all other cable was corroded enough to cause intermittent starting issue along with a bad ground on the harness at the panel. Replaced those two things and all is well. Thanks all. Cactus

      Last Post by:  Justin Murphy posted: 16 hours ago

    • Gasket for FF5488 on a QSB 5.9

      This topic has 0 replies, has 1 voices, and was last updated by Paul Bellefontaine 16 hours ago

      June 24, 2019 at 6:20 pm In addition to the flat gasket that sits around the circumference of the FF 5488 it is shipped with a shallow round black tube shaped gasket that is presumably there for the centre hole. There is no groove or detention in the filter housing to match it and it is a sloppy fit on the screw on threads that the filter screws up onto. It is so loose it will fall off. 1) Is this the correct centre gasket for this filter / engine combo. 2) Watching Ut…

      Started by:  Paul Bellefontaine in: Cummins Marine Engines


      0 Replies - Can you Help? ...be the First to Respond!

    • Aftercooler test rig question

      This topic has 2 replies, has 2 voices, and was last updated by tonus7272 19 hours ago

      June 24, 2019 at 2:24 am Hi I have made up a test rig to test my Aftercooler. Just checking, to prevent damaging the core – is there a ‘maximum torque’ for the threaded rod? Does it matter what rubber I use for the gaskets too? Cheers Tony Attachments:You must be logged in to access attached files.

      Started by:  tonus7272 in: Cummins Marine Engines


      2 Replies
      June 24, 2019 at 3:55 pm Thanks heaps Rob. I have some neoprene sheet that sounds like the go. Cheers Tony

      Last Post by:  tonus7272 posted: 19 hours ago

    • QSB 380 Cooked Turbo?

      This topic has 1 reply, has 2 voices, and was last updated by Rob Schepis 23 hours ago

      June 24, 2019 at 11:17 am So I’m new to the group… I love my 290 Amberjack but its time to move up because the Admiral wants more space and I want Diesels! Hopefully I can get some advice here. I’m a hobbyist mechanic, but my expertise ends past the dipstick and the wiring harness. We are looking at a 390DA with 700h QSB 380’s and in one of the pictures the stbd turbo looks like it has gotten hot enough to fry all the paint, the port motor does no…

      Started by:  Sean Filburn in: Cummins Marine Engines


      1 Reply
      June 24, 2019 at 11:55 am Not QSM …. QSB 5.9 380’s. Not at all a great photo but I think it shows enough that probably best to just move on to the next one. Looks like they run overloaded (which is a known issue with that boat/engine package per factory setup) and that one engine had a bad incident involving a coolant loss / overheat … Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 23 hours ago

    • Gear clatter at idle… how to adjust idle rpm 5.9 6bta 315

      This topic has 5 replies, has 3 voices, and was last updated by Jeffrey Fontes 1 day ago

      June 23, 2019 at 5:33 am Hey everyone, I’m having an issue at idle. Started happening a few weeks ago out of the blue. In gear at idle I’m hearing a very loud “clanking” noise. When I throttle up 50-100 rpm it goes away. Sounds like gear clatter, but I’m no expert. How do I adjust idle rpm and what is the safe maximum idle rpm to increase to? Cummins 6bta 315 M2 nippondenso Side note: since this problem started I noticed my shaft nuts are loose when I hauled …

      Started by:  Connor MacLeod in: Cummins Marine Engines


      5 Replies
      June 24, 2019 at 10:05 am i wouldn’t touch the idle, they make noise if its a spring damper. its perfectly normal, now if its not a spring damper its worth looking into asap.

      Last Post by:  Jeffrey Fontes posted: 1 day ago

    • Anodes in oil coolers

      This topic has 4 replies, has 4 voices, and was last updated by Andre Huizing 1 day ago

      June 23, 2019 at 12:05 am Goodmorning, On the back of our QSC8.3 are 2 oilcoolers (see aolso attached pictures) – Mota transmission oil cooler for the Twindisc – Mota hydraulic oil cooler of which Wesmar stabilizers, bow and stern thruster run. The transmission cooler does not have any anode in it which has always surprised me. It is also a more complex devices of which I guess it has some thermostatic function? The (upper) hydraulic oil cooler is a very simp…

      Started by:  Andre Huizing in: Cummins Marine Engines


      4 Replies
      June 23, 2019 at 10:52 pm Thanks for all the advice. If anything I found a topic that even Tony is unsure about 🙂 To ponder a little more. We have a Northern Lights genny with a Lugger diesel. In this Lugger there ZERO anodes which always baffled me. However one of the things they did that might explain this, is isolate the core in the HX. This is only clamped in rubber no contact with any other metal. That’s what started me thinking on the isolation of the hydr…

      Last Post by:  Andre Huizing posted: 1 day ago

    • 6CTA, underpropped or not making power?

      This topic has 11 replies, has 4 voices, and was last updated by dnord2 1 day ago

      June 3, 2019 at 10:24 am First post, I’ve been through these forums for a while. I have a 97 Formula 41PC with 450’s. Currently, only turning 2500 RPM WOT and 2900 high idle. I recently messed with the throttle linkage, since there was some extra in there but still not giving me the proper RPM. I’m ok with getting props pitched, but initially I want to make sure the motors are making proper power so I’m not just band-aiding a possible problem…

      Started by:  dnord2 in: Cummins Marine Engines


      11 Replies
      June 23, 2019 at 5:41 pm ok, thanks! Props it is!

      Last Post by:  dnord2 posted: 1 day ago

    • Early 6BTA Stop Solenoid Issue

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 1 day ago

      June 15, 2019 at 11:33 am Having a bit of an issue with replacement of a stop solenoid. Long story short, my stop solenoid went out and I ended up somehow losing the bracket on the injection pump that goes with it. This is on an older 6BTA Nippon Denso fuel injection pump. I couldn’t find an original replacement bracket so I used the newer style bracket (ball snap) and replaced the solenoid with 3922680. Now the engine starts but immediately stops. The solenoid pul…

      Started by:  S in: Cummins Marine Engines


      1 Reply
      June 23, 2019 at 5:32 pm Real simple………..Your wiring is not right.. If it starts while in the crank mode and then shuts down, the ignition/hold circuit is not connected correctly……..Very simple to trouble shoot. Go here: https://www.sbmar.com/master-url-index/ Search “solenoid” ( Ctrl + f) and you’ll have all you need to sort it out.. At least 3 articles applicable to your issue & your wiring, and how it works. …

      Last Post by:  Tony Athens posted: 1 day ago

    • Bosch fuel injector pump internal meltdown

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 1 day ago

      June 16, 2019 at 8:38 pm 1995 6cta. Rebuilt three years ago by maybe not the best company. It has ran great for 500 hours and the Bosch fuel injector pump had an internal meltdown. I removed the lifter pump. Lifter pump looks good but there were lots of metal shavings behind it. The internal shaft in the injector pump was a mess. The Bosch pump is now in the rebuild shop. Any thoughts on what may have caused that to fail? I don’t want to rebuild it and have it…

      Started by:  jim wick in: Cummins Marine Engines


      1 Reply
      June 23, 2019 at 5:18 pm Answer these questions–Be verbose if needed to explain, so I have have an idea as to how to help.. “By not the best company” = ????? Why was the engine rebuilt in the 1st place ?——–Total history of the engine before the rebuild = ????? Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 1 day ago

    • engine overheating

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 1 day ago

      June 20, 2019 at 10:58 pm engine overheating Cap.

      Started by:  Mark Poole in: Cummins Marine Engines


      1 Reply
      June 23, 2019 at 5:13 pm Come on———————————Do you really think we have a crystal ball? Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 1 day ago

    • 6CTA 8.3 prolonged low RPM cruising

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 1 day ago

      June 21, 2019 at 5:49 am First, Tony, thank you for the Forum and your continuous support to Cummins owners. Currently, we are cruising our 1997 Tiara Express with 6CTA 8.3 Diamonds from Florida to Maine. Engine hours are now 1,641. The last 255 hours were logged on this trip at 900 – 1100 RPM. Cumulative GPH is 4.0 total for both engines. Question 1: Is there a need to rev or increase RPM daily or occasionally to clear soot? If so, is this done under load or …

      Started by:  Denny Gaultney in: Cummins Marine Engines


      1 Reply
      June 23, 2019 at 5:12 pm Denny, If this is how you always run the engines, then I’d do two things…, 1) Change your thermostats to 180F units.. It would be nice to be sure when you run at such low loads, your coolant temps stay above 180F-190F.. 2) Each day or so, I’d run it up to 2000-2200 RPM or so for 2-3 minutes, whether/conditions permitting… Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to …

      Last Post by:  Tony Athens posted: 1 day ago

    • engine service

      This topic has 7 replies, has 5 voices, and was last updated by Fireisland1 3 days ago

      June 19, 2019 at 9:19 pm Ive just removed my two QSB370s from a 2005 36 Australian manufactured blackwatch to basically clean and tidy up the engine bay. The engines have 2100Hrs and have been serviced regularly with heat exchangers removed every two years striped cleaned and resembled as per your protocol. Ive had the boat for ten years and it had 600Hrs When I originally got he boat the max revs were only 2850. Ive since had the props re pitched and now see 3100 fu…

      Started by:  gerard hryniuk in: Cummins Marine Engines


      7 Replies
      June 21, 2019 at 3:57 pm I would replace the starter if it’s in your budget. It’s a pain to do in the boat. If not I would at least remove the bolts, clean and replace with moly or tefgel

      Last Post by:  Fireisland1 posted: 3 days ago

    • Code 432/QSM11/no throttle

      This topic has 2 replies, has 2 voices, and was last updated by sean b 5 days ago

      June 19, 2019 at 2:35 pm I have an intermittent throttle problem on one of my QSM11’s (on a 2005 Sea Ray 500) that gives a fault code of 432. Cummins tells me that code refers to the “throttle acceleration pedal” being out of alignment or needing to be replaced. I have no idea what that is and Cummins, SeaRay, and Mercruiser aren’t much help. Basically, when this happens the engine will only run at idle speed. The throttle seems to become di…

      Started by:  sean b in: Cummins Marine Engines


      2 Replies
      June 20, 2019 at 6:24 am That’s a good question. The only paperwork I have on the throttles is from Teleflex but I believe that may be who makes the cables. No markings on throttle themselves. I’ll call SRay. Thanks sean/searay500

      Last Post by:  sean b posted: 5 days ago

    • TD 5065 Trans

      This topic has 10 replies, has 2 voices, and was last updated by Anthoni Lightbourne 6 days ago

      April 25, 2017 at 6:48 pm Hi everyone. Every year I’m having to change these damper plates. I’ve come to the conclusion that these gears are too light for my application on a QSB 5.9 with max RPM 2650 on my boat. Are there a heavier duty plates available or should i have to upgrade to a heavier duyy trans like the 5075? Attached is a pic of my recent change of plate. 1.72:1 reduction How do the ZF boxes compare to the TD? Attachments:You must be logged in to …

      Started by:  Anthoni Lightbourne in: Marine Transmissions


      10 Replies
      June 19, 2019 at 9:10 am Good Day guys, Just thought I’d resurrect this post. We’ve tried the Vulkan torsion coupler which is said to be far better than the rest stated. However we get a deep rattle noise when installed. So I’m looking for a heavier duty CFR 178 coupling rubbers. Any help greatly appreciated. Regards, Anthoni

      Last Post by:  Anthoni Lightbourne posted: 6 days ago

    • 1000 hour service

      This topic has 1 reply, has 2 voices, and was last updated by Steve Lewis 6 days ago

      June 18, 2019 at 9:24 am 380 cummins 2008 is there a time frame for 1000 hour service, I’m at 500 hours? George

      Started by:  George in: Cummins Marine Engines


      1 Reply
      June 19, 2019 at 5:07 am George you may want to elaborate a little on your engines. QSB5.9 380 What CPL? What make and model boat are they in? You are in FL so do they sit in Salt Water all of the time or do you have a fresh water flush system? I see that you are a new member to the site. Have you read about the preventive maint regimen that is prescribed by Seaboard? Water Pumps AFTER COOLERS!!!! fuel and trans coolers HX Turbo Exhaust How hard have your engines …

      Last Post by:  Steve Lewis posted: 6 days ago

    • 2013 6BT Cummins Tach Not working

      This topic has 3 replies, has 4 voices, and was last updated by john 6 days ago

      June 13, 2019 at 12:05 pm Hi Guys, Hopefully, you guys can help with troubleshooting why the tach is not working on my 2013 Cummins 6bt 210 hp motor. I have swapped the gauge panels from one engine to another and the tach will not work on the starboard engine. Once I swap the starboard gauge panel and connect it to the port engine the tach works which tells me its something between the motor and the gauge panel. Where should I start to look to find the issue? Thanks in a…

      Started by:  Brian Gibson in: Cummins Marine Engines


      3 Replies
      June 18, 2019 at 10:20 pm What sender do you have? I just dealt with one that was a mechanical sender. Was the same issue you are having.

      Last Post by:  john posted: 6 days ago

    • Caterpillar 3056TA 205hp

      This topic has 1 reply, has 1 voices, and was last updated by Bill Desmarais 6 days ago

      June 18, 2019 at 7:34 pm Tony? Anyone ? Familiar with the CAT 3056TA 205 hp…. Saw one in a 2002 boat. Any idea how this particular model behaved, performed, gave trouble, bullet proof, or not ? Cant’ seem to find much info on it and I’m not registered with boatdiesel. Thanks, Bill D 25 Terry Jason down east, 370 6BTA CPL 2008 ZF63A gear, 1.75" shaft, 20X19 DQX

      Started by:  Bill Desmarais in: All Other Marine Diesels


      1 Reply
      June 18, 2019 at 7:51 pm this CAT appears to be a Perkins marine diesel re-branded by CAT 25 Terry Jason down east, 370 6BTA CPL 2008 ZF63A gear, 1.75" shaft, 20X19 DQX

      Last Post by:  Bill Desmarais posted: 6 days ago

    • Expansion Tank Cap P/N

      This topic has 1 reply, has 2 voices, and was last updated by Kevin Woodard 6 days ago

      June 18, 2019 at 3:28 pm Hi folks Cleaning recovery tanks for 6bta and want to replace expansion tank caps. Looking Stant P/N for the caps? Mine are different brands and models AC Delco RC33 cap on port Unknown brand model A170241 cap starboard Both are 15psi Thanks!

      Started by:  Nestor in: Cummins Marine Engines


      1 Reply
      June 18, 2019 at 3:53 pm Hi Nestor, Cummins P/N: 5304925 https://www.sbmar.com/product/cummins-marine-coolant-fill-cap/ Thanks, Kevin Kevin Woodard Seaboard Tech

      Last Post by:  Kevin Woodard posted: 6 days ago

    • ZF Gear Low Pressure Sensor/Alarm Location

      This topic has 5 replies, has 3 voices, and was last updated by Rob Schepis 1 week ago

      June 17, 2019 at 5:48 pm I would like to install the SMX Gear Low Oil Pressure Alarm Switches on my ZF 220A transmissions. Where is the best location to install them. I see two locations on your web-site from pressure sensing of the transmission/gear pressure gauges/sensors (see attached pictures).

      Started by:  majipatrick in: Marine Transmissions


      5 Replies
      June 18, 2019 at 6:05 am If you use both stations regularly than you should have alarms at both. Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 1 week ago

Viewing 20 topics - 1 through 20 (of 1,550 total)