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- Cummins Marine Forum Topics
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Climbing EGTs on PME 480CE
This topic has 11 replies, has 3 voices, and was last updated by
April 25, 2024 at 4:51 pm 480CE on CC35 – Climbing EGTs on Port Main<br /><br />Boat: 35Ā“ Carolina Classic 2003<br /><br />Engines 480 CE 6CTA<br /><br />Stbd Serial No: 46211591<br /><br />Port Serial No: 46211572<br /><br />(can someone run these engine s to see history or if heads were ever updated?)<br /><br />First season with the boat the wastegate plate rusted through which i ended up re…
11 RepliesMay 8, 2024 at 6:57 am Tony, Got a bit side tracked here, any thoughts on the OG topic?Ā I ended up ordering new hoses from here to eliminate that as an option. Do new turbo wastegates need to be adjusted at all? can too high of boost create high EGTs?Last Post by:
posted: 6 hours ago
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Cummins 6CTA Wont Start – Starter Issue?
This topic has 5 replies, has 3 voices, and was last updated by
1 day ago
May 2, 2024 at 12:11 pm Port Engine wont start. One loud single click/clunk. One time it sounded like there was a pop after the single click one of the times at which point I stopped trying.<br /><br />Troubleshooting I have done:<br />Grounds look OK, I cleaned the main ground on the engine.<br />I tested for voltage for the large red cable that goes to the starter with full time power and its giving me 12.5v so battery to starter doesnt seem t…
5 RepliesMay 7, 2024 at 10:33 am I was able to get the belt guard off and engine to spin over. Seemed to be harder in some spots, but overall spun freely. Btw without going to start engine, I am getting 13.4 volts at the mag relay “in” and starter “in” but the other two are getting 8v without turning a key. Shouldn’t that read zero volts until I turn a key?<br /><br />Edit as I run through tests.<br /><br />Lar…Last Post by:
posted: 1 day ago
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6BTA-M1 shuts down and will not restart
This topic has 8 replies, has 3 voices, and was last updated by
1 day ago
April 1, 2024 at 5:06 am Hi – 1995 Albin 28 – 6BTA, unknown hours.Ā Ā We’ve had it about a year now but only put about 60 hours on it.Ā Ā A few months ago it died suddenly under acceleration.Ā Ā It restarted about 30 minutes later after several tries and seemed to run fine.Ā Not knowing much at the time, we asked the mechanic to look over the fuel supply and he reported back that the filters were clean and there didn’t appear to be any problems.Ā It…
8 RepliesMay 7, 2024 at 6:31 am We haven’t had a chance to replace the filters and bleed the system yet.Ā But some other family members took a shot at starting it over the weekend.Ā At this point, it hasn’t run in 3-4 weeks since we’re only able to try on the weekends.Ā Ā They pumped the low lift primer “a lot” until they thought that they felt backpressure.Ā Then after a few attempts to start, it chugged its way up and idled fine.Ā They didn’…Last Post by:
posted: 1 day ago
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Picture Request: 6CTA Oil Pump
This topic has 3 replies, has 2 voices, and was last updated by
1 day ago May 7, 2024 at 4:37 am Chasing down a lower oil pressure on port motor – SN#46309849 – 1200 hours. Doing routine maintenance this weekend and also changing out the oil pressure relief valve and was recco’d to do the oil pump as well.Ā Ā Does anyone have a picture of its location?Ā I can’t seem to find a good one online and I have searched for a while.Ā (Forum search function still down).
3 RepliesMay 7, 2024 at 5:36 am I guess the REALLY good news is that there is reasonable access to it as well.ĀLast Post by:
posted: 1 day ago
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After cooler core
This topic has 2 replies, has 2 voices, and was last updated by
1 day ago
May 6, 2024 at 4:51 am After cooler core thoughts . My after coolers were done the seaboard way. Engines always fresh water flushed. This picture is from the top side of the after cooler core . Is this small area of salt on the fins a issue?
2 RepliesMay 7, 2024 at 4:07 am Thank you Tony. When i installed these engines I used all your advice and tips!!! The seaboard way!Last Post by:
posted: 1 day ago
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Vertical mount turbo on qsb
This topic has 2 replies, has 2 voices, and was last updated by
1 day ago
April 26, 2024 at 7:07 pm I am going to have to get a “cleaner” engine in the near future for my charter boat, and the qsb 6.7 is likely what I will use to replace my cherished 6 bta. Upon looking at the qsb, it doesnt seem like there is a place to vertically mount the turbo like there is on the 6 btas. Is there a way to vertically mount the turbo? In the case it cannot be vertically mounted to obtain the 12″ above waterline for exhaust is that accompli…
2 RepliesMay 6, 2024 at 7:21 pm Roger that, thank you responseLast Post by:
posted: 1 day ago
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Smokey 6BT
This topic has 0 replies, has 1 voices, and was last updated by 2 days ago
May 6, 2024 at 8:32 am I have an early 6BT (CPL 742) in my 1987 Albin 36 trawler.Ā It’s been going through a refit for the past two years.Ā My wife and I just completed a 1,100-mile shakedown cruise to FL and back to our home in NC.Ā It’s always been a little smokey so I researched some possible causes.Ā The smoking is both on a cold start and after a day of cruising. I replaced all the old (probably original) 9mm injectors with new Cummins injectors (CPN …
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White or light grey smoke under load
This topic has 0 replies, has 1 voices, and was last updated by 2 days ago
May 5, 2024 at 5:24 pm Guys Have a pair of Cummins QSM 11 715 in my boat.Ā Recently the port side will smoke when under load (at Cruise).Ā I noticed the temp goes up higher that star side by 5 degrees or more and the oil pressure drops about 4 lower than port side.Ā They used to be the same.Ā Air filters are brand new, no signs of coolant in the oil.Ā do notice some black tiny flakes on port near turbo location on that engine. There are 3200 hours on each and the 3000…
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Zero oil pressure on 6BTA
This topic has 2 replies, has 2 voices, and was last updated by
2 days ago
May 5, 2024 at 7:02 am I have a Meridian 408 with 6BTA Diamond Series engines (2004 year model). When I pulled into my slip six weeks ago, I had 20 PSI of oil pressure on my starboard engine at idle before I shut it down (I always keep records). When I started the engine for the first time yesterday, the gauge showed zero oil pressure and the alarm continued to sound so I shut it down. Since the oil pressure gauge and the alarm are on two separate senders, I have to a…
2 RepliesMay 5, 2024 at 1:36 pm I installed a mechanical tach. Verified that there is no oil pressure. The needle did not wiggle, and no oil entered the pressure tube. Someone suggested that the oil pump drive could have sheared, is that som000ething that happens? I’ve never heard of that. Any suggestions welcomed. Thanks, Martin0Last Post by:
posted: 2 days ago
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Twin Disc Whining when shifting from Forward to Neutral
This topic has 5 replies, has 3 voices, and was last updated by
3 days ago
December 9, 2022 at 12:33 pm Hi All, I have a Nordic Tug with a Cummins 6BT5.9-M and Twin Disc MG-506-1 gear box.Ā Recently, when shifting from forward to neutral, I hear a whining sound that starts about 3 seconds after the shift and last for 3-4 seconds.Ā It does not make this sound when the engine/transmission is cold or when shifting from reverse to neutral.Ā I am wondering if anyone on the forum has noticed this with their running gear or may have a suggestion as where…
5 RepliesMay 5, 2024 at 7:56 am I have the same whining noise at the same conditions as Bruce’s but mine is a ZF 280. I wonder if his stituation was resolved. ThanksĀ JohnLast Post by:
posted: 3 days ago
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Cummins 6CTA engines down on speed
This topic has 2 replies, has 3 voices, and was last updated by
3 days ago May 3, 2024 at 9:03 pm Hi All i have a Carver 530 Flybridge with a pair of Cummins 6CTA engines that have been totally rebuilt .. I was seeing speeds of 21 knots at full throttle with vertualy full fuel tanks and a clean bottom… Took the boat out last week and with 1/4 fuel in both tanks and still clean bottom i am only seeing max speed of 15.8 knots at 2300RPMs… Carver state boat should max RPMs at 2650and top speed should see 24.1 knots.. So what am i mi…
2 RepliesMay 5, 2024 at 6:12 am Have you compared speed at a given rpm now vs then? This might seem like semantics to you but to say you are down on speed is wrong, that would suggest you are making rpms but lost a few knots.Ā What you have is a power/rpms issue: Understanding Low Power TroubleshootingLast Post by:
posted: 3 days ago
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QSC 8.3 high oil pressure
This topic has 1 reply, has 2 voices, and was last updated by
3 days ago May 3, 2024 at 11:43 pm Greetings from TjĆøme, Norway.Ā We are operating a search and rescue/ambulance boat in the outer Oslofjord in Norway. The boat is a 44 foot aluminum boat with 2x Cummins QSC 8.3 600 hp For a long time we have had a problem that one of the engines are cutting out at high RPM for a fraction of a second.Ā When it happens the engine reduces max rpm and the marvelous SeaCraft reports “system fault” usually with “low fuel pressureR…
1 ReplyMay 4, 2024 at 1:24 pm Until you install a high quality liquid filled 0-150 or 0-200 PSI gauge on a proper hose that you can monitor while runningĀ what is the “real oil pressure”,Ā IMO you are chasing a Mercury Smartcrap glitch.Ā Nothing I have ever read would make your engine shut down with a high OP like you are stating either. That sounds even more like a “Mercury” glitch.Ā Are you using Cummins oil filters? Everything is “factoryR…Last Post by:
posted: 3 days ago
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QSB 5.9 Coolant drain and fill
This topic has 3 replies, has 3 voices, and was last updated by
4 days ago April 27, 2024 at 1:40 pm Hello guys, I will be draining and replacing coolant on my 2005 Mainship for my first time. Ā In reviewing your technical info, you show a drain plug at the red arrow, but mine does not have a plug there. Ā I do see a plug at the other end of this tube, as shown in my photos where my finger is pointing (the next is the close up one is from underneath the tube). Ā Wondering if you can confirm if this would be the drain plug, and if you have any tips…
3 RepliesMay 3, 2024 at 2:16 pm The plug under here will drain the entire systemLast Post by:
posted: 4 days ago
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Impeller puller for Sherwood 1730 raw water pump
This topic has 3 replies, has 3 voices, and was last updated by
5 days ago May 1, 2024 at 7:01 am Does anyone have experience with an impeller puller tool that works with a Sherwood 1730 raw water pump?. this is on a 6BTA engine. Amazon has one from Jabsco but I would like to know if it (or some o0ther tool) would work. Thanks
3 RepliesMay 3, 2024 at 9:04 am The more you destroy it the easier it will be to get it out.Ā Did you spray lots of lube between the vanes and then some bumping of the engine?Last Post by:
posted: 5 days ago
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6CTA – Turbo Dripping Oil
This topic has 4 replies, has 4 voices, and was last updated by
1 week ago
April 26, 2024 at 7:08 am First time I noticed this was after putting the boat back in the water yesterday and going for a long ride to test temps out after servicing the Aftercoolers per Tony’s method. Ā There was oil ontop of the transmission which seems to be coming from the Turbo. The oil is clean and looks new so it must be from my recent oil change which is why I believe this is a new thing that happened yesterday.Ā Ā Ā
4 RepliesMay 1, 2024 at 1:00 pm Those are some ugly pictures!Ā Lots of saltwater around the intake while underway (looks like even the air filter is covered in rust?!) and the color of the paint on the turbo intake side also speaks volumes.Last Post by:
posted: 1 week ago
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Turbo Blankets
This topic has 2 replies, has 2 voices, and was last updated by
1 week ago
April 28, 2024 at 6:44 pm Hello, I have a 40 Sundancer with qsb 380ās. Would you guys recommend the use of a turbo blanket? What are the cons and pros. I know it makes the turbo more efficient.Ā
2 RepliesApril 29, 2024 at 7:50 pm Advise taken. Thank You Tony!Last Post by:
posted: 1 week ago
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Smx 27 Impeller Install
This topic has 8 replies, has 7 voices, and was last updated by
1 week ago
April 23, 2024 at 10:34 am I’m trying to install a new SMX 27 impeller in my SMX 1730 pump. First time replacing it. Impeller won’t go in all theĀ way. I think it’s getting stuck on something orĀ ot fitting on spline. Tried two different new ones. Any advice or experiences.Ā Thanks
8 RepliesApril 29, 2024 at 11:47 am Google impeller tool. I have the same pumps, takes 5 minutes to install the new impeller.ĀLast Post by:
posted: 1 week ago
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Cummins 5.9 QSB 380 hp Temperature Alarm
This topic has 7 replies, has 2 voices, and was last updated by
1 week ago April 27, 2024 at 8:34 am I was sea trialing a boat we are considering purchasing and while running a short distance at 3000 RPM the overheat alarm went off and the gauge is reading 183 degrees. I am trying to understand what temperature the alarm should go off. It seems like 183 is higher than what I would expect. I would expect about 176 to 178. Question is what temperature is the alarm supposed to go off? 183 degrees is not that much over what I thought would be the n…
7 RepliesApril 29, 2024 at 6:14 am IMT 141 F–If this was at some lower RPM,Ā like cruise,Ā then this was your alarm. 100% aftercoolers need proper servicing.Last Post by:
posted: 1 week ago
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6CTA Aftercooler Removal and Service Issues
This topic has 16 replies, has 7 voices, and was last updated by
April 18, 2022 at 8:11 am After the thorough information and write-ups from Tony and the SBMar team, and the readily available parts kits they supply, I decided to tackle my aftercoolers this year. This is my second year with this vessel, a 2001 Tiara 3800 Open with 6CTAās, roughly 500 hours. It was previously serviced by Gorham Diesel out of the Boston area. The aftercoolers were replaced with brand new ones 4 years ago, so I am assuming that this is the first āserviceā…
16 RepliesApril 28, 2024 at 3:02 pm That starboard core looks like crap but maybe try pressure testing it after cleaning it incase it still holds pressure? Ā I dont have the SMX housing (does one exist?), but I do have the SMX core on my Port Side with the original housing and no issues, pressure test passed. My 2nd year with it btw, previous owner didnt do the bench and when I went to do the bench I found corrosion and a failed pressure testĀLast Post by:
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Help with QSB leaks
This topic has 3 replies, has 2 voices, and was last updated by
1 week ago
April 24, 2024 at 10:40 am Hi.Ā 2007 vintage QSB 5.9 355hp in a 32′ Tiara Open.Ā Found these apparent leaks on the rear of the port side motor.Ā Second two pics are the sameĀ from slightly different angles.Ā First is on the left rear side of the motor.Ā What is going on and how to address?Ā Thanks.Ā BTW they have around 1250 hrs on them.
3 RepliesApril 28, 2024 at 7:36 am Thank you Tony, willdo.Last Post by:
posted: 1 week ago
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Climbing EGTs on PME 480CE
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