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Viewing 7 topics - 1 through 7 (of 7 total)
    • Cummins Marine Forum Topics
    • SMX Impeller failure

      This topic has 7 replies, has 6 voices, and was last updated byRichard Dodson 11 months ago

      June 14, 2023 at 1:16 am Do these things randomly fail or does there have to be a reason? Exactly 5yrs since I put it in new. The last time it failed 5 yrs ago some ding bat left the sea cock closed, thats not wat happened this time PS when I install the new one rotate it CW or ACW? Mark

      Started by: Mark in: Cummins Marine Engines

      7 Replies
      June 15, 2023 at 3:45 pm Call the number on the WEB site to place an orderĀ 

      Last Post by: Richard Dodson posted: 11 months ago

    • Turbo slow to spool up

      This topic has 10 replies, has 3 voices, and was last updated byRob Schepis 1 year ago

      March 18, 2022 at 2:45 am This started happening after a long period of slow running (trolling Lures), now happens more often. From slow running, push throttle up nothing happens. leave it half way and rpms slowly rise, then it springs into life turbo winds up and we are up on the plane 2500 rpm.. Intercooler is clean, AF is clean, hull is clean, prop is clean, boat is not over weight.

      Started by: Mark in: Cummins Marine Engines

      10 Replies
      January 23, 2023 at 11:23 am Any V hull is going to take some extra umph to get her over the hump, especially a single screw.Ā  Sounds normal IMO.

      Last Post by: Rob Schepis posted: 1 year ago

    • Shaft seal

      This topic has 4 replies, has 2 voices, and was last updated byMark 1 year ago

      January 12, 2023 at 8:13 pm Hi guys wat type shaft seal is this?   If it leaking under way only, can it be tweeked or is it a shaft out and change seal thing?

      Started by: Mark in: Cummins Marine Engines

      4 Replies
      January 15, 2023 at 6:31 pm Thanks Rob, ill order in the new seals etc from our local rep. Mark

      Last Post by: Mark posted: 1 year ago

    • Starter delayed disengagement

      This topic has 4 replies, has 3 voices, and was last updated byNeto 2 years ago

      October 5, 2021 at 4:08 pm It started to get a bit sticky couple of years ago, hangs on for a second or so but recently started getting worse, last start it stayed engaged to flywheel for about 3 seconds after starting. sorry dont have a good photo of starter and attached photos the aftercooler is removed for servicing. Any advice before i start pulling things apart? Thanks in advance Mark

      Started by: Mark in: Cummins Marine Engines

      4 Replies
      January 24, 2022 at 12:48 pm Congrats on fixing it! I had a problem with my starter recently, sometimes I pushed the start button and it would not do anything but you would notice that smoke was comming from the starter cable so and starter was not doing anything. I changed the mag switch, cleaned everything and still did it one more time. I got scared of the situation and decided to just get new batteries and a brand new Delco 38mt starter to replace the old 42mt. My guess…

      Last Post by: Neto posted: 2 years ago

    • 6BTA Isolated Ground vs Negative Ground ?

      This topic has 11 replies, has 5 voices, and was last updated byAlex 2 years ago

      October 13, 2021 at 9:48 am Hi, Looking thru the diagrams found the “Wiring Diagram – Standard (B/C Series)”. It shows that when the ground is connected to the starter is an Isolated Ground and… ground to the engine block is a Negative Ground system. My 6BTAs have grounds attached to the bellhousing and not to the starter negative stud which makes them a Negative Ground system, I think. From a marine electrical requirements/system standpoint, what i…

      Started by: Alex in: Cummins Marine Engines

      11 Replies
      October 15, 2021 at 10:13 am Excellent Tony, Thank you all for the advise. Is there anything else “electronic” wise that I need/Must have in my 6BTAs? Oil pressure sender, Coolant Temp sender, RPM Sender on bell housing, ignition On for fuel solenoid hold and ignition signal for starting and fuel solenoid pull, alternator?

      Last Post by: Alex posted: 2 years ago

    • rubber hose sealant?

      This topic has 2 replies, has 3 voices, and was last updated byBill Desmarais 5 years ago

      June 5, 2018 at 2:36 am Hi, for the raw water plumbing, RW pump to AC, AC to HX etc, whats the go to sealant between the cast alloy housings and the raw water rubber hoses? on mine looks like something yellow translucent used… looking at seaboards products , rectoll # 5? or do i just go back to our usual silicon products or nothing at all FMPE works well.

      Started by: Mark in: General Discussion

      2 Replies
      June 5, 2018 at 7:31 pm Rectorseal # 5….. Home Depot sells it

      Last Post by: Bill Desmarais posted: 5 years ago

    • salt water in fuel & injector pump

      This topic has 4 replies, has 3 voices, and was last updated byMark 5 years ago

      June 1, 2018 at 11:58 pm Hi all. So whats the damage if this occurs?

      Started by: Mark in: Cummins Marine Engines

      4 Replies
      June 4, 2018 at 9:20 am thanks for taking time to respond Larry. So thats what can happen, thats scarey.. Ive got every thing crossed that water did not actually get into pump., But I actually dont know for sure. Today i gave her a short run without air cleaner on, no apparent change except i did rech 2700 rpm on a prop thats one inch bigger pitch than usual , with or with out air cleaner. that doesnt make sense. so, air cleaner is fine. I pulled the aftercooler a …

      Last Post by: Mark posted: 5 years ago

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