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- Cummins Marine Forum Topics
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Fuel Additive/Fuel Tank Polishing
This topic has 4 replies, has 4 voices, and was last updated by
2 years ago April 4, 2022 at 8:25 pm Just did my annual maintenance and my 10 micron filters were BLACK.Ā Obviously I’ve got some algae in the tank.Ā Any recommendations on an additive?Ā A biocide like Bioguard? Anyone ever do the fuel polishing?Ā I’m assuming they just run the fuel through a filter and not really clean the tank.Ā Any thoughts would be appreciated.Ā
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in: Cummins Marine Engines
4 RepliesApril 13, 2022 at 8:31 pm Years ago, I had a Riviera 43 (99 model) and set up a fuel polishing system as per the attached photo.Ā Basically two 3-way valves and a circulating pump.Ā Also, I once had the opportunity to see inside the fuel tank of a 43 (someone else had cut one open to make it larger) and I noticed the fuel supply came from the forward bottom of the tank and the fuel returns had internal pipes leading from the forward top of the tank to the aft of the tank…Last Post by:
posted: 2 years ago
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Airsep Breather Kit
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago
June 26, 2021 at 1:34 pm Have put about 20 hours on the motors (6CTA) since the breather kits were installed and only noticing a very small amount of oil in the jugs. Essentially the same amount on both engines. I’m told this is completely normal but wanted to run it by the forum. Thanks.
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2 RepliesJune 26, 2021 at 4:00 pm Iāll be back at the boat in a few days Tony and will get them uploaded.Last Post by:
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Air Sep Breather Kit
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago May 3, 2021 at 9:23 am A friend of mine with the same engines as me said he needs an Air Sep Breather kit. Can someone explain what that is and why it would be needed? Thanks!!
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1 ReplyMay 3, 2021 at 5:57 pm Type “Walker Airsep” in GOOGLE and read away……………….. Then go into “Tony’s Tips” and read my politics on CCV’s, when it comes to Cummins marine engines. Then, research some more.. ..Last Post by:
posted: 3 years ago
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160 Degree Thermostats
This topic has 13 replies, has 4 voices, and was last updated by
3 years ago January 8, 2021 at 6:45 pm Probably a stupid question but here it goes….had my mechanic put in 160 degree thermostats for my 6CTA’s. So obviously when running the boat that’s where they stay. So my question is how would I know if the engine is overheating? Assuming if there was an issue my gauges would reflect a problem? Or my alarm I guess?
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13 RepliesFebruary 13, 2021 at 8:19 pm Rereading the original post I do now see where you are coming from. Interesting. I never read it that way. Either way heās got some good feedback from all to help him sort through his questions .. Thanks.Last Post by:
posted: 3 years ago
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6CTA Coolant Question
This topic has 10 replies, has 5 voices, and was last updated by
January 5, 2021 at 3:40 pm Question, I have 6CTAās. Iāve noticed that after some trips my coolant expansion/overflow tanks are normal level. A week or two later when I come back they are almost empty and always have to put a cup or two in them before I head out again. Boat runs great, put in 160 thermostats, No leaks as far as I can see in the diapers, donāt see anything in the exhaust, and coolant checks are always full. Plan on doing a pressure test in the coming we…
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10 RepliesJanuary 10, 2021 at 12:36 pm I have diapers everywhere and nothing. My guess is the HXR’s.Last Post by:
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Turbo Oil Leak
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago October 12, 2020 at 9:19 am 6CTA’s. Did an engine room check after a 95 mile run. Noticed a very small amount oil on my stbd transmission. Here are some pick of where it’s coming from. Did my best to get an “underneath” shot as well. Assuming it’s coming from the turbo?
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1 ReplyOctober 21, 2020 at 2:23 pm If you can see it, then we need to “see” it.. Your pics tell me nothing.. Also, pics from a few feet away so I can see what you are dealing with as to the engine itself..Last Post by:
posted: 3 years ago
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Fuel Additive
This topic has 2 replies, has 2 voices, and was last updated by
September 9, 2020 at 1:41 pm I have 6CTA 450’s. Since getting the boat 2 years ago I have only used my aft fuel tank 550 gallons, (I have a 300 gallon fwd tank as well) which has been plenty for what I do around the channel islands. But i plan on doing a Cortes bank trip which is 120 miles one way. Anyway since the forward tank has not been used since I’ve had the boat should I use an additive when I fill it? Thanks.
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2 RepliesSeptember 9, 2020 at 1:53 pm The fwd tank actually pumps into the rear tank, not directly to the mains. Would that make a difference or same suggestion?Last Post by:
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Electronic Controls
This topic has 3 replies, has 2 voices, and was last updated by
4 years ago March 10, 2020 at 9:28 pm Not sure this is the forum but thought I’d try. I’m contemplating replacing my hynautic controls with electronic ones. I have Diamond 450’s 6CTA. I think they’re (one of them anyway) is damaging my port transmission. My last trip this past weekend the port transmission would not engage in fwd but did in reverse. Everything was fine on the way out until I pulled the anchor. I checked the trans oil and it was black an…
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3 RepliesMarch 11, 2020 at 9:07 am Well it all depends on how you’re boat is configured and if you do the work yourself… the hard parts can easily run you ~$5k for a simple twin engine setup… If you want a hard quote, complete this form: https://www.sbmar.com/glendinning-control-systems/Last Post by:
posted: 4 years ago
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Hull Strainer Question
This topic has 8 replies, has 3 voices, and was last updated by
February 11, 2020 at 7:43 pm I have a 43′ Riv with 450 Diamond’s. I’m pulling the boat next week in Ventura to replace the thru-hulls and the strainers in the boat. My mechanic, yard and the guy who works on the boat suggested the rectangular hull strainer over the scoop and getting rid of the typical basket strainers in the boat all together. Still have the original strainers (1999) and they’re metric and to access the basket on the port side you…
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8 RepliesFebruary 12, 2020 at 8:33 am Holy sh*t! No bueno. I have a diver once a month doing the bottom and I’m sure he’ll service the new strainers when he’s down there and pull off as needed.Last Post by:
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6cta 450 Engine Alarms
This topic has 1 reply, has 2 voices, and was last updated by
4 years ago February 11, 2020 at 11:04 pm Question, my 1999 Riv. has no engine/oil/etc. alarms on the dash. Other than my mechanical gauges, that’s it. How hard are they to install and are they worth getting? Thanks.
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1 ReplyFebruary 12, 2020 at 6:14 am Worth it — Right at the top as to “high priority” Hard to Install — A caple DIY owner would enjoy the project Here’s an article: https://www.sbmar.com/articles/redundant-alarms-least-expensive-engine-insurance/Last Post by:
posted: 4 years ago
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Transmission Oil Sample
This topic has 1 reply, has 2 voices, and was last updated by
5 years ago March 14, 2019 at 9:23 am Iām in the process of buying a 1999 Riv. 43 with Cummins 450 Diamonds. The engine oil samples came back with some soot but OK. Starboard transmission was fine. Ports transmission, which was rebuilt a couple years ago came back to dark to read. It was flushed, ran for a few hours and retested. This time it came back yellow but my mechanic thinks the tray is good. Just looking for some additional thoughts and reassurance on this or is there …
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1 ReplyMarch 16, 2019 at 1:36 am Too dark to read? The tray is good? Not understanding everything here..Last Post by:
posted: 5 years ago
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Fuel Additive/Fuel Tank Polishing
