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Mystery sensor on 270 Cummins
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago
June 13, 2022 at 3:23 pm I have an 270 Cummins, Serial # 74602729. The attached picture shows the fuel/oil manifold. The silver sensor with one wire is the oil pressure gauge for the instruments. What is the one to the left (with 2 wires) and why is it so expensive ($250 in 2013 vs $20 for the oil pressure gauge).Ā I assume it controls the low oil pressure buzzer. Does it interact with the ECM for the electric air heaters? I have disconnected the air heater from the ECU…
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in: Cummins Marine Engines
3 RepliesJune 14, 2022 at 9:30 am It is a 1998 37′ Bayliner. The silver sensor on the right is the oil pressure sensor for the dash gauges. I know this because I replacedĀ it ($20) when my gauges stopped working. Also when I bought the boat the warning buzzers didn’t work and I had to buy the sensor on the left from Cummins ($250 in 2013), which fixed the problem. The reason I am thinking that it controls the air heaters is that the buzzer problem started happening w…Last Post by:
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Air heater – how long to operate
This topic has 13 replies, has 7 voices, and was last updated by
4 years ago
November 26, 2019 at 9:56 pm Hi Tony, Iām bypassing the ECM on my 6BTA 270 and wiring it with a switch and a light. My question is when and for how long should the air heater be engaged? Seems like pre-heating for too long could draw down cold batteries
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in: General Discussion
13 RepliesDecember 8, 2019 at 8:58 am After one of the contactors shorted out, I removed the ECM, all contactors, and wiring harness (that was fun). I could wire the heater grid in the JWAC, and control it with a switch, but I’ve not found the need for the heater. The boat is active from April to November in Rhode Island, and other than April and November, I’ve not had a problem with cold starts. I’m on a slip, plugged in, and the block immersion heater (Fleetgu…Last Post by:
posted: 4 years ago
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ECM control for air heaters
This topic has 14 replies, has 4 voices, and was last updated by
November 4, 2019 at 3:27 pm I am having trouble with my air heaters on my 1998 Cummins 270 serial number 45661773. I know you recommend removing them but I am stubborn and want to know how they work. My port engine heaters worked fine, I could hear a click when turning on the key, the wait to start light illuminated and they started easy. The starboard solenoids didn’t work and the wait to start light didn’t light up. So to diagnose the problem I hooked up a te…
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14 RepliesNovember 19, 2019 at 5:21 pm Well after spending hours running a power line to the fuse on the engine from the ignition switch, everything worked fine; once! Now it never works. I thought maybe I have to ground the other side of the fuse, so I ran a wire to ground, no difference. Does this mean the ECM on both engines suddenly doesn’t work? How much is a new ECM? KevinLast Post by:
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BTA fuel cooler removal
This topic has 3 replies, has 4 voices, and was last updated by
4 years ago October 23, 2019 at 1:55 pm An acquaintance of mine suffered a fuel cooler breakdown on his 6BTA resulting in 16 gallons of sea water in his fuel tanks. $25k later, he’s up and running again BUT… I’ve decided to nip that possibility in the bud and install one of your kits. Now, I rebuilt V8s and British 4 cylinder car engines in my youth so I can turn a wrench. I’ve tackled oil changes/filters and fuel filter changes on the 6BTA in our boat so the …
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in: Cummins Marine Engines
3 RepliesNovember 10, 2019 at 7:50 pm Kevin, Due to ease of doing it, I just ran a fuel hose from the red circled “return” to the combo block where the “lower” hose off the fuel cooler enters the combo block. It works great, but does not address the leak potential of the combo block.Last Post by:
posted: 4 years ago
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Cummins 6BT Stalled and wouldn't restart when hot
This topic has 4 replies, has 4 voices, and was last updated by
4 years ago July 16, 2019 at 10:30 am I purchased a 1979 Trojan F26 that was fitted with an older Cummins 6BT. After many blown trailer tires (trailer is in bad shape) and a failed launch attempt (prop stuff box was leaking), I finally got it in the water to place her in a slip. Motor was pumping good seawater, was a little slow to start cold, but it fired up. After leaving the dock and getting her up to 2000 RPMS there was some smoke coming from the exhaust manifold area (hard to …
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in: Cummins Marine Engines
4 RepliesAugust 22, 2019 at 5:44 pm urlLetās seeā. Zero coolant expansion tank. You expect this to work?? Next. Remove the exhaust mixer. I want to SEE inside your turbo. TonyLast Post by:
posted: 4 years ago
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6bta Alarm Conditions?
This topic has 5 replies, has 4 voices, and was last updated by
4 years ago August 6, 2019 at 5:59 am In a 2004 6bta 370 hp what all dummy alarms are there? I am getting a alarm at or near wot that I can not identify. Oil level and pressure is good Temps are good
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in: Cummins Marine Engines
5 RepliesAugust 21, 2019 at 5:04 am WIF sensor — It would be located in the collection bowl, you would know if you had it – a sensor screwed into the bowl with wires/harness coming out of it. Brad, not sure what definitive answer you are looking for — as to OEM engine alarms on a mechanical 6BTA it’s low oil psi and high coolant temperature, that it’s. There is the low voltage alarm at the PCB. And then anything else could have been added aftermarke…Last Post by:
posted: 4 years ago
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SMX water pump impeller change
This topic has 14 replies, has 6 voices, and was last updated by
December 13, 2018 at 11:23 am I am attempting to replace the impeller from my SMX pump. I installed it 3 years ago and in order to remove the old Sherwood pump I had to remove the motor mount. As you can see the impeller can only come out 3/4 of the way due to the fuel hose that comes off of the fuel filter and goes to the injection pump? (Bosch). I need to remove this hose to finish and it appears it would be easiest to remove the banjo fitting at the pump. (second picture …
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14 RepliesDecember 21, 2018 at 10:49 am Kevin, I see you had the issue with the impeller blades expanding inside the case as you push the impeller in. I’ve found that the easiest way to deal with that is to remove the top hose flange (hose to the fuel cooler). That exposes the interior of the case, and you can bend the blades as needed when you push in the impeller.Last Post by:
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Turbo Riser Blowby
This topic has 7 replies, has 4 voices, and was last updated by
6 years ago November 30, 2017 at 11:17 am I am replacing my risers and upon removing them I found significant blowby on the starboard turbo to riser interface. I have included a picture of the starboard turbo surface and a picture of the port and starboard ‘turbo side’ gaskets. I would like to know what caused the leakage. Do I need to pull the turbo and have it machined? Any input would be appreciated.
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7 RepliesDecember 3, 2017 at 10:14 am Hi Kevin, I would strongly suggest that you remove your exhaust elbow(s) as it is 19 years old, and at least have it cleaned (at a rad shop) and inspected for leaks from corrosion. I had an exhaust hose overheat situation this summer on my new to me 15 year old Cummins 6BTA that was caused by a corroded “stock” Cummins elbow that looked similar to yours. Only caught the issue because I had just installed an exhaust heat alarm from Bo…Last Post by:
posted: 6 years ago
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Mystery sensor on 270 Cummins
