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- Cummins Marine Forum Topics
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TAMD74EDC starting issue
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago January 3, 2021 at 9:09 am Help!!! The gremlins are attacking my boat… I have the TAMD74EDC set up w/ ZF transmission. About 600 hours. I just Had my boat pulled to have a bottom job, shaft log seals replaced, all rubber below the water line, Props refurbish. Oil change, Trans serviced.. And now my Starboard engine isnāt cooperating..Very frustrating… .. Port engine everything works perfect. Everything worked perfect with both motors/trans before pulling the b…
2 RepliesJanuary 3, 2021 at 7:39 pm Thanks Tony… you beat me to the punch.. I just got back from the boat. I did exactly that. After talking with the tech for a bit. he told me what he was doing to try and start the boat. Pretty sure he accidentally ran the sequence that messed up the TPS sensor. So I reset the system and and re calibrated the TPS and it worked. Hope it helps the next guy.. What was tough was there wasnāt any codes flashing on the system. Now while I …Last Post by:
posted: 3 years ago
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Kohler Generator won’t start
This topic has 4 replies, has 3 voices, and was last updated by
3 years ago
August 27, 2020 at 1:42 pm 2005 Kohler 15.5 EOZ Generator with 1,568 hours. Out of the blue, generator will not start. No prior indication of an issue. When I press either the remote start or the one on the generator itself I get a fast banging noise from the starter. Checked the battery and it’s fine with voltage and a load test. Figured it was the starter so I removed that and brought it to a mechanic shop. They tested it and said it was fine. Put it back on after…
4 RepliesDecember 18, 2020 at 3:53 am Glad to hear it got sorted…. Funny line – Tightening of bolt = $5, knowing to tighten that bolt = $150ā¦..Last Post by:
posted: 3 years ago
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Yanmar 6LP 1000 Hours
This topic has 6 replies, has 4 voices, and was last updated by
3 years ago June 13, 2020 at 12:03 pm Hello All, I want to get your opinions on what is necessary as my Yanmar 6LPA-DTP engines roll over the 1000 hour mark. A little history on the engines/boat: Bertram 28, the boat is lift kept in South Florida, repowered in 2006 with 6LPA-DTP (260hp, 2 valves/cylinder), 3960 max rpm, engines run 165* F water temperature, max cruise rpm is 3250, a little bit of white smoke on idle, little black smoke on first acceleration, freshwater flush after u…
6 RepliesNovember 21, 2020 at 3:32 am A bit late on my response. I have a 6LPA-STP with 7200 hours (6500 hours put on in the last 3 to 4 years). I imagine the service is very similar. In my annual haul up I have my mechanic do the valve adjustment, and we change the timing belt (we put on about 2,000 hours per year). The timing belt always looks great, but not about to chance it. I do have good access in front of my engine to change it however. I did change my elbows to the HDI Mari…Last Post by:
posted: 3 years ago
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Yanmar 6lpa-stp 315 Correct engine coolant??
This topic has 6 replies, has 5 voices, and was last updated by
3 years ago May 11, 2020 at 9:32 am Hello all, Thank you in advance as always for the wealth of information here. Sourcing parts to change my timing belt on 6lp. I decided I should change the coolant since they are so coolant sensitive and I need to pull the crossover pipe anyway. This lead me down the current bunny hole as to what coolant is correct. It seems Yanmar’s approved coolant list is extremely dated and based off Asian companies that are mainly out of business now …
6 RepliesNovember 21, 2020 at 3:14 am This might be a little late, but perhaps still help someone. I use Prestone Extended Life Coolant. It is orange in colour.I get it easily here in Barbados, so would imagine it is readily available where you are. I have a 2005 6LPA-STP in an Albin 28, with 7200 hours. I put on about 2,000 hours a year, and change it on my annual haul up when we change the timing belt.Last Post by:
posted: 3 years ago
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CAT C-12 Aftercoolers- Tony
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago
November 16, 2020 at 7:32 am Tony I know these are not Cummins but I see you have commented on lots of aftercooler discussions some which were not Cummings. I just purchased a 2002 Azimut 55 Fly with CAT C-12’s. I had the engine surveyed and samples pulled. The engines have about 1100 hours. The CAT tech said the engine performed well and seems to be in good shape. The samples came back clean. CAT had no service records for the motors. As best we can tell the a…
3 RepliesNovember 16, 2020 at 7:01 pm Tony, Do you have link that show how to pull them & maybe what parts are need to reinstall (gaskets etc)? I will pull mine and send them to you. ThxLast Post by:
posted: 3 years ago
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Onan genset and 45 error
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago November 12, 2020 at 1:25 pm Hello guys. Have replaced last week worn out fuel camshaft on one Onan with Kubota V2403 engine,and now,as usually goes,it starts,runs few seconds,and shuts down with that error. I know that usually means winding damaged or controller unit,but in this case genset worked fine,before this “operation”. It starts sometimes also difficult,like it has air in system,but i bleed it directly on injectors above. I will try to check winding re…
2 RepliesNovember 13, 2020 at 12:08 am Hello Tony. Yes,understand,but asking can’t do no harm. I will try to sort this genset today,fingers crossed,and for sure will come back with results. Thank you for reply.Last Post by:
posted: 3 years ago
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Overheating; 6bta 300 cummings
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago October 26, 2020 at 10:08 am Cummings 3006bta overheating
1 ReplyOctober 26, 2020 at 1:01 pm You are are kidding, RIGHT? Zero operational history, ZERO pictures, ZERO anything. No crystal balls here..Last Post by:
posted: 3 years ago
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Cat 3116 Performance issues
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
October 11, 2020 at 4:36 am Customer called because their stbd engine suddenly lost power like it was out of fuel. I went out with the customer and drove the boat and we had no issues for 1.5 hours. They called back later saying that it happened again. Since then: Changed Racors (engine mounted filters are approx 2 months old, but Racors had some contamination) and re-sealed racor housings. Fixed 2 leaking fittings to correct air noted in fuel return. I couldnĀ“t replicate …
2 RepliesOctober 23, 2020 at 5:28 am Thanks Tony! I appreciate the feedback. I actually went back and put fuel pressure gauges on the engine again and ran it in the slip. I was about to give up on it when it started acting up again and the fuel pressure dropped to almost nothing. I could manually pump the priming pump and keep the engine running, then it eventually started building pressure again and stabilized itself. A new fuel pump and drive assembly (the cam in the drive…Last Post by:
posted: 3 years ago
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Black Smoke Mystery – please help
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago
September 10, 2020 at 2:52 pm Problem. Twin Yanmar 75hp diesels in a Seaward 25 displacement hull. Up to 2300 rpm no worries, runs like a sewing machine but over 2400 rpm huge black smoke from BOTH engines and will not go over 2500 (should be 3500 max). With no load the engines both rev easily to 3500. The injectors have been serviced, the hull is clean – relaunched a month ago. We could understand maybe a turbo or fuel pump problem, but on both engines at the same tim…
3 RepliesSeptember 11, 2020 at 5:01 am You’ve actually led to finding the likely cause of the problem. I went to take photos of the installation and removed the air filter to check for any obstructions. Unbelievable – it’s just a piece of gauze! So no air flow blockage there. While it was off I stuck my finger in and tried to spin the turbo. No movement. I tried again with a screwdriver, very gently, but it’s stuck solid. I took a photo and it looks pretty gun…Last Post by:
posted: 3 years ago
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3126 Cats brown black smoke
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago September 4, 2020 at 6:38 am Have 3126 cat mechanical engines. The port motor has 10lbs of fuel pressure at low idle seeing no air in clear tube at all rpms. Boost is 22lbs at cruise,brown,black smoke in water exhaust at power up and puffs black smoke at cruise.Turbo temp 850 degrees. The starboard motor fuel pressure is 24lbs at low idle and boost is 22lbs egt temp 900 degrees and no smoke. There is a visual tar around turbo inlet,not on the blades.Engine temps all checked…
1 ReplySeptember 4, 2020 at 9:29 am 1) Post good pictures of both engines as installed in the vessel-All angles & all perspectives–All clear & in-focus———————–Concentrate a little extra on the exhaust system.. 2) Post good pictures of exactly what you are describing so I can “see” what you see 3) Post engine rating–There are multiple ratings for this engine 4) Post your WOT rpm loaded as you use the b…Last Post by:
posted: 3 years ago
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MAN 2842 Intercooler install on 56ft Bayliner
This topic has 3 replies, has 2 voices, and was last updated by
3 years ago August 30, 2020 at 5:14 am hello im working on a 56 bayliner. it has the D2842 2 valve MAN. I need to install the inter coolers on top of the engine. the engine room does not have a crane. any suggestions other than man handling it up 5ft?
3 RepliesAugust 30, 2020 at 5:39 pm It’s called a “come-along” mixed in with some wood beams or ??, over what you have to lift and applicable straps as needed.Last Post by:
posted: 3 years ago
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cast iron to stainless exhaust components
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
August 23, 2020 at 7:09 am What is the opinion of adding a 316 stainless steel exhaust mixer elbow to an existing cast iron riser? The attached photo is a Yanmar 6LY2AM-STPC installation I have. The mixing elbow has to be replaced because of it’s design. This is the way we purchased it, and I need to correct it. I can get a stainless mixing elbow made locally that will put the injection on the down hill side of the high point to prevent flooding the turbo when it l…
2 RepliesAugust 23, 2020 at 8:06 am Thank you. I was planning on salvaging the cast iron bend out (dry) of the turbo and adding a stainless riser & mixing elbow with more rise, and drain downhill in the exhaust exit if (when) it leaks internally. I read Tony’s Tips on exhaust systems and recognize this is a dangerous design as it exists. I want to change that. Is there an issue with electrolysis between cast iron and 316 stainless? Would the different coefficients of ex…Last Post by:
posted: 3 years ago
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Pyrometer Placement, Turbo Marine Diesel
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
August 20, 2020 at 5:52 am With the new dry riser advice says install a Pyrometer to measure EGT. But where? before the turbo? After the Turbo? On the Exhaust manifold? and what kind of temperatures should I be looking for before and after the Turbo? Thanks, Friz
2 RepliesAugust 22, 2020 at 8:17 am Mid 80’s BMW Marine Diesel D190, inline 6 about 165 hp. Thanks.Last Post by:
posted: 3 years ago
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4LH sudden power loss
This topic has 1 reply, has 1 voices, and was last updated by
3 years ago
August 2, 2020 at 3:09 pm Last week ran the boat from the yard to the mooring. Ran it at cruise, 3000RPM for about an hour then the engine suddenly lost power and died. Immediately thought of fuel filters but was surprised at the abruptness. Bled lines, cracked injectors and got it running. Unable to power up again, idled to mooring which was pretty close. Next day, changed the RACOR and secondary. Racor was pretty clean, secondary was pretty dirty. No change, no power. …
1 ReplyAugust 2, 2020 at 6:06 pm suspect check valve in lift pump on outlet? Thoughts?Last Post by:
posted: 3 years ago
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Yanmar 4LHA-STP idle vibration
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago
July 31, 2020 at 5:38 am I currently have a Boston Whaler 31L, with twin Cummins 6BTA’s. I’m looking at buying a Mainship 34 Pilot with twin Yanmar 4LHA-STP’s, with 1100 hours on them. When I took it out for sea trial, I noticed that the Yanmar engines vibrate a lot more at idle than my Cummins engines. They are smooth running at cruising speed. This is my first experience with the Yanmar engines, and I was wondering if it’s normal? I know…
3 RepliesAugust 1, 2020 at 8:19 am I think Yanmar typically uses softer engine mounts than Cummins. If there is any inherent vibration the Yanmar will tend to rock-and-roll a bit more, while not transmitting that motion as strongly to the boat. I had Yanmars for years before the Cummins I have now.Last Post by:
posted: 3 years ago
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BMW D190 Diesel Riser/Exhaust Elbow Design
This topic has 6 replies, has 3 voices, and was last updated by
June 26, 2020 at 8:50 am First post. Just acquired the engine but minus the riser after turbo. Looked at replacements and at having one fabricated. Something about the design just doesn’t make sense to this “closed loop cooling” noobie. As in the picture the outgoing raw water inlet to the pipe is just after the turbo on the uphill side of the pipe. What prevents raw water form flowing back into the turbo when the engine is shut down? There is a R…
6 RepliesJune 29, 2020 at 5:51 am 1) Regardless of what the seller told you, when propping, think of it as 200-250HP ( max) diesel at 4000 RPM.. Exceed that loads at that RPM, and even if the engine is in good condition and you will get very little life out of it Tony – The D190 is rated 165HP. Currently the boat has a Chrysler LM318 rated at 225HP. The Volvo outdrive has a 17 pitch prop. Do you think that is too much pitch for the D190? It will be pushing a…Last Post by:
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Exhaust leak by injector after head rebuilt
This topic has 3 replies, has 2 voices, and was last updated by
3 years ago June 2, 2020 at 7:41 pm Fired engine up after having head worked on. Exhaust leak by injector . Have had fuel leak out injector before but not exhaust Volvopenta D4 / 260 Supposed to be video of it running but itās not playing
3 RepliesJune 3, 2020 at 6:44 pm Glad you got it sorted out and sorry we we of no help.. Appreciate that you gave us a shot though. Get a Cummins, and we are “all in”.. ..Last Post by:
posted: 3 years ago
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Considering a boat with a Yanmar 6LPA-STP 315.
This topic has 6 replies, has 3 voices, and was last updated by
4 years ago March 11, 2020 at 8:52 pm Hello again guys. My buddy is replacing his charter boat with a larger one and gave me a very fair offer to buy it. I currently run a similar hull with a 250 cummins. I am nervous of the Yanmar 6LPA-STP 315. It has 5300 hrs. since rebuilt. It ingested water when it was nearly new @1000 hours. He has owned it for about two years and 1500 hours or so. Fluids and filters changed regularly. Exchanger and after cooler have not been serviced since he …
6 RepliesApril 5, 2020 at 8:50 am If the boat is “a hard to get up on type hull”, dark transient acceleration smoke can be normal.. Doing the aftercooler is always a good thing to do every 2 years or so if the engines sit with saltwater is them..Last Post by:
posted: 4 years ago
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Cat 3116 electric fuel pump.
This topic has 3 replies, has 2 voices, and was last updated by
4 years ago March 24, 2020 at 10:27 pm Iāve got a boat I work on with cat 3116 twins. Itās a 36 riviera. The owner was working on it and had to call me in. They do most of there work but had to call me today. Itās been running really rougH after they changed the fuel filters. Seems one engine has a electric fuel pump and one doesnāt. Found this quite odd. The electric fuel pump was put had blown a fuse and when we changed it it was running perfect. Why would they put a electric fue…
3 RepliesMarch 25, 2020 at 11:22 am This is the fuel pump. Looking for another one if anyone has seen it beforeLast Post by:
posted: 4 years ago
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Yanmar coolant plugs for heater
This topic has 2 replies, has 2 voices, and was last updated by
February 10, 2020 at 3:42 am I’m looking for information on the correct type of fittings for the heater ports on a Yanmar 6LYA-STE. The service manual calls them 3/8″ pipe threads. They are either NPT or BSP. Measured what was on the engine and it appears they are NPT as they are slightly larger than the BSP. Did someone wind them into the BSP female threads before I got the engine. What is it supposed to be? thanks D
2 RepliesMarch 1, 2020 at 8:02 am Thanks for the info. Spoke with mack boring and they confirmed it was BSP 3/8″. Removed old plug and saw some thread smashing. I was able to fit the BSP fitting without concern. Posting for anyone else looking for the information. DLast Post by:
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TAMD74EDC starting issue
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