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- Cummins Marine Forum Topics
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Cummin Onan 9MDKWB ODOR ISSUE
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago September 1, 2021 at 1:29 pm Hello All, I am having an issue with my genset. After it runs for about an hour, I get strong odor in the cabin. To me it almost smells like burning oil or coolant. I recently completed an oil change. I did not spill any oil, but nonetheless cleaned the unit and drip pan with a degreaser and bilge cleaner. At times in the season my wife is also claiming that she notices some small amounts of soot residue on the back wall of the aft c…
2 RepliesSeptember 3, 2021 at 4:30 am If the engine is venting more than it should then I would say yes that it will produce an odor. (crankcase gases) How long have you had this genset and is this a new problem? What kind of genset is it and maybe a few pics of it installed and the exhaust system it utilizesLast Post by:
posted: 2 years ago
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6BT Coolant Recovery Tank
This topic has 3 replies, has 3 voices, and was last updated by
2 years ago September 1, 2021 at 10:09 am New owner of 40 footer with Cummins 6BT engine. When purchased the coolant recovery bottle was blown out. Replace with OEM part and the bottle blew out again. Only coolant that seems to have been lost was the 1/3 in the tank when engine was cold and engine operated fine after the blowout but made a mess of engine compartment. How is the pressure relived while engine is hot and running?
3 RepliesSeptember 2, 2021 at 5:15 pm Drill a very small hole ( 1/16″-3/32″”) in the top of the plastic tank. Will hurt nothing but will say “yea or nay”, that was the issue.Last Post by:
posted: 2 years ago
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ZF Cruise Commander error codes
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago
September 1, 2021 at 6:29 am My Cummins 480CE engines are equipped with ZF Cruise Commander throttle and transmission controller. I sometimes get error codes 44 and 45. Anyone know what these codes mean.
2 RepliesSeptember 2, 2021 at 4:57 pm Yes located manual 250 pages worth. I got that error because of testing my port engine when I turn on Cruise sometimes do not get tone from unit. Already cleaned every contact and it’s improved but not perfect yet. Next I will check switch on my breaker panel. ThanksLast Post by:
posted: 2 years ago
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Aftercooler pitting
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago September 1, 2021 at 5:36 am So about to put my intercooler back together and it has the typical pitting on the internal circular face at the bottom of the body casing, it doesnt cause any issues with sealing, however I was wondering if it was worth filling the pits with a skim of JBweld or something like JB tankweld putty just to prevent condensation etc from reacting and pitting even further? Just trying to eek more years out of the housing! Steve
2 RepliesSeptember 1, 2021 at 4:29 pm Thanks Rob Shouldnt be too much of a pain if using the putty as I can smear it in.. and the tolerances there are ‘loose’ to say the least. The face that meet the core ends is fine this is about 1/2″ up from there.. and not ‘critical’ surface.. i’m just trying to prevent corrosion.. and also stop more fur growing which seems to be what jams the core in… It strikes me that these things should be coated int…Last Post by:
posted: 2 years ago
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Bosch/Cummins Injectors
This topic has 4 replies, has 3 voices, and was last updated by
2 years ago
August 29, 2021 at 4:56 pm I have a bad injector on a cummins QSB 5.9 425 (CPL 8732) and I am looking everywhere for a new injector. I cannot seem to find one anywhere and lead time have ranged from a couple of weeks to a few months. Any body have a clue where I could find one? Like a new one but I will take a Bosch reman because I am desperate part is Cummins 5263312/Bosch 0445120239 tried to get it rebuilt locally but they can’t seem to get the parts and even if…
4 RepliesSeptember 1, 2021 at 7:46 am thanks was my next option. I found them in the UK who had them in stock and funny enough even with shipping to Panama they would have been cheaper than buying from Cummins..Last Post by:
posted: 2 years ago
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Turbo Questions – 6BTA 330
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago August 31, 2021 at 6:52 am Hi Guys So 3 years after having my turbos recon’d and 3 years passing in a flash and not having time to address the ‘risers’ I noticed when doing some minor maintenance that 3 of the 4 turbo to elbow bolts had snapped off (big patch of soot) I have removed the elbow and there is no evidence of rust / water getting up into the dry section, manifold is clean too, so can only assume turbo corrosion is damp salt air (yes fresh wate…
2 RepliesSeptember 1, 2021 at 2:52 am Hi Tony The turbo is with the turbo guy so I cant get a picture. I know its damp, whether air or water.. its my fault and I accept full responsibility for not fixing the crap exhaust design in the time I have had.. Even if I had a picture you would tell me its water, fix the exhaust š Ive read and been around the forum to know its wrong and needs fixing, my business, 4 year old and everything stops me from fixing it properly – for now! Thi…Last Post by:
posted: 2 years ago
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Temp spike
This topic has 3 replies, has 4 voices, and was last updated by
2 years ago August 30, 2021 at 8:37 am Recon QSB 5.9-425hp 425 hrs Recently ran for 5 hours at 2600 while temp held steady at 178. return trip at 4 hours it bumped up to 181-183. I backed off to 2500 and it resumed back to 178. This occurred a few weeks before so I installed new 165 stat which had same result.Should I be concerned about a few degrees fluctuation? The AC was serviced at 250 hrs but the HX has not yet.
3 RepliesAugust 31, 2021 at 11:38 am My baseline on my 480CE’s has been 159/161 on plane(2150rpm) since the beginning of the season. 2 weeks ago things changed a bit and I do not know why. Now they run 159/165. Still WELL within spec but something caused the 4degree climb on strbd. I figure this could be a bunch of different things as I had the entire cooling circuit serviced back in June/July once our mechanic had time on his schedule. We acquired the boat in late April…Last Post by:
posted: 2 years ago
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Retrieving info from ECM. 2005 Cummins QSB 5.9
This topic has 5 replies, has 3 voices, and was last updated by
2 years ago
August 23, 2021 at 12:03 am Presumably engine hours are stored in the ECM. Are idle time, total fuel used and total lifetime engine revolutions, also, please? However, only engine hours are displayed on the Smartcraft instrument. Is it possible to display the other parameters on the Smartcraft, especially total lifetime engine revolutions, which are perhaps more meaningful than engine hours. I have an old QC5100 Quickcheck, but only know how to check for faults.
5 RepliesAugust 31, 2021 at 5:14 am Thanks Tony. However for the time being, I would prefer to achieve my current requirement with the equipment I already have i.e. display total engine revolutions and if possible, total fuel used on the Smart craft display. Is that possible on the , please? Even if it means losing the ability to display one of the other parameters. By the way, when I try to see all the available info on myQC5100 Quickcheck, nearly everything is shown as not avail…Last Post by:
posted: 2 years ago
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How to determine hp rating programmed into engine
This topic has 7 replies, has 3 voices, and was last updated by
2 years ago August 23, 2021 at 6:56 pm I have a pair of QSB engines in my boat, which had been repowered in 2006. One is original with 800 hrs, one has been replaced due to a failure and has 185 hrs. The original has a sticker rating of 355hp and the replacement has a sticker rating of 380hp. I borrowed a scan tool from a friend and looking at the ratings programmed in the ECM. Both engines say rating is 476hp @ 2800. Is this even possible? Screen shots of the ECM data for both …
7 RepliesAugust 30, 2021 at 6:04 pm Something is not kosher. How are your controlling the Engine throttle position ?? You need to find your throttle position readings–Your ECM is transmitting that data any basic troubling requires that you should be able to “see it” on any displays that reads SAE J1939 ECM output data Post a picture of your display(s) — Smartcrap 1.0 is not a display, that’s a Mercury translation of SAE J-1939 data into some forei…Last Post by:
posted: 2 years ago
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4bta EnviroVent
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago August 28, 2021 at 4:14 pm I see them listed for 6BT / 4BT and 6BTA. Is there a 4BTA option?
1 ReplyAugust 30, 2021 at 5:35 pm Think of your engine as 6BT.. Turbo neck size is 3″? Double check.Last Post by:
posted: 2 years ago
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4bta Aftercooler disassembled Pic
This topic has 12 replies, has 5 voices, and was last updated by
2 years ago August 23, 2021 at 12:33 pm I disassembled my 4bta aftercoolers today. Disassembly went well. Port needed very mild coaxing to get the core out of the housing. Starboard slid right out. Maintenance history is unknown, but I do suspect they have been serviced before. There was grease at the o ring mating surfaces and anti seize on the bolts. They have never been freshwater flushed, freshwater flush set up is on the “to do” list. Notes: 1. A loose piece of anod…
12 RepliesAugust 29, 2021 at 2:56 pm Test was done by: 1-1/2″ “Jim Caps” to plug the water in/out 1/2″ nipple, 3/4″x1/2″ threaded bushing, and a 3/4″ gauge block screwed into an anode port. All of this can be found in the plumbing area of the home depot, the gauge block will likely come with a 15# gauge they are used for testing gas piping. I also used a 4″ Jim cap, screeched over one end of the aftercooler core, then stood the afte…Last Post by:
posted: 2 years ago
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Coolant Temperature Sensor relocation
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago August 29, 2021 at 6:08 am My boat is a Bayliner 3988 running 330 6BTA’s. Temp sensors are OEM, original to the boat and in located next to the Thermostat. I purchased the relocation adapters from SBAR to move the sensors to the top of the exhaust manifold. https://www.sbmar.com/product/smx-temperature-alarm-switch-adapter/ However my boat uses coolant to heat hot water tank while underway so I have lines running off port from top of exhaust manifold that attac…
1 ReplyAugust 29, 2021 at 7:09 am Post a couple of good pics of what you have–No too close upLast Post by:
posted: 2 years ago
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6 BTA 370 fuel Injectors
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago August 27, 2021 at 4:27 pm I have a bad fuel injector that is leaking fuel into my crank case. A friend has a set of injectors from a 330. Can I use these in my engine? Thanks.
1 ReplyAugust 27, 2021 at 5:44 pm 99% yes, you can use them in the CPL of your friends engine is 1975 and yours is 2208…………….. Pop test them first for safetyLast Post by:
posted: 2 years ago
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QSB 330 performance question
This topic has 4 replies, has 3 voices, and was last updated by
2 years ago August 25, 2021 at 2:52 pm First time posting. I have read through a ton of posts and articles regarding increasing HP on the QSB 330 to 380 which then pointed me in the direction of determining whether my 330s were performing properly today. So, I did a performance test and the results were far below specs (gph at all rpms and lower WOT rpm) and also below an online review of my boat (Meridian 368) that I found online. From the articles there are a number of steps to…
4 RepliesAugust 27, 2021 at 3:25 pm What kind of tach do you have? Pictures of the display? No load RPM in neutral? If what you are posting is accurate, you engines are a solid 200RPM+ over propped and you are asking them for something they will not or cannot give. At an accurate 2400, GPH should be a 11 gph as you notedLast Post by:
posted: 2 years ago
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High EGT on 6BT 210’s
This topic has 8 replies, has 3 voices, and was last updated by
2 years ago
August 13, 2021 at 4:56 am I have a fairly new install of a pair of RTO 6BT’s in a 31 Bertram. CPL 0742 Family 402 Motors run right up to 2650 with absolutely no black smoke. Coolant temps are good. All seems great till I look at the pyrometers. (bought here on SB…almost wish I didn’t and kept my head in the sand) At 2100 rpm my starboard motor has EGT of about 700F (7lbs boost), the Port runs up to 800F (8lbs boost) At 2200 rpm my starboard motor has …
8 RepliesAugust 27, 2021 at 6:28 am Wow, that is unexpected and a relief. I assumed running at a 2300 fast cruise with EGT’s in the 850-900F range I was asking for trouble. For that reason I’ve been keeping her in the 2100-2200 rpm range and working to lower the temps a bit. IF you say 900 is okay…I’d say great, then to ease the load on motors take a 1/2″ of pitch from wheels. I want to be able to use the fast cruise in case I need to…or those …Last Post by:
posted: 2 years ago
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6BTDA 5.9 M3 Cruising Speed
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago
August 24, 2021 at 7:02 pm I have 1997 40ā Carver with Cummins 6BTDA 5.9 M3 330 hp diesels. The props are 20×21. What rpmās should I be running at? Thanks very much in advance!
2 RepliesAugust 25, 2021 at 9:39 am Thanks so much Tony! I actually got the numbers off my original survey as I am not with the boat at the moment. Maybe they threw the D in there for Diesel? not sure, but I really appreciate the information.Last Post by:
posted: 2 years ago
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Brand new Sherwood pump leak at shaft seal
This topic has 10 replies, has 5 voices, and was last updated by
2 years ago August 22, 2021 at 10:54 am Brand New Sherwood pump is leaking at the shaft seal. Is this normal? Does it need a “break in” I’m assuming no. Any Feedback asap would be helpful. Have pics but don’t know how to post from phone. 4bta
10 RepliesAugust 23, 2021 at 6:25 pm Thanks Mark. I sent a pm with my email to your hull truth user name.Last Post by:
posted: 2 years ago
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What did I do wrong? Envirovent CCV…..
This topic has 12 replies, has 3 voices, and was last updated by
2 years ago
August 19, 2021 at 12:16 pm See pics and video. I had an exhaust leak that clogged my After coolers. Installed new SMX aftercooler core and new Envirovent CCV. I see smoke out of CCV breather on the port motor, but not really out of the starboard motor. Should I try adjusting the height of the CCV breather? I remember Cory mentioning something about that. Or maybe I have the CCV breather too far away from the air filter? I could certainly move it closer so that there is be…
12 RepliesAugust 23, 2021 at 11:00 am 2001 6BTAs 330hpLast Post by:
posted: 2 years ago
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I have to “old” style 3-pulley system
This topic has 5 replies, has 3 voices, and was last updated by
2 years ago
August 16, 2021 at 5:53 pm I am having a difficult time finding some parts. One is the Hexagon flange head cap screw and Lock nut. My bolt has stripped so my belt slowly gets loose to where it will not work therefore I have no water flow. After rigging it a few times I need to get it replaced. Any idea where I can find older parts such as one of these. I may need to change the whole pulley system as there is some rust. Or I guess I can get the bolt and bring it to …
5 RepliesAugust 22, 2021 at 4:49 pm Thanks for the link on bolts. I do do minor repairs on my boat and something like this i can handle. But the link you attached is very helpful and I appreciate it.Last Post by:
posted: 2 years ago
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4BTA G1503 Raw Water Pump Questions
This topic has 4 replies, has 4 voices, and was last updated by
2 years ago August 19, 2021 at 11:05 am Background: I recently replaced my port side 4BTA G1503 Raw water pump with a new pump sourced from sbmar earlier this summer when they were in stock. The pump was likely the original pump from ā05, it was painted white, and I had to cut some carpet to remove a floor board to access, I really think it was never changed or rebuilt before. It is possible that the impeller had been changed before but I donāt know. Boat has always been in salt water…
4 RepliesAugust 22, 2021 at 3:41 pm Thank all for responding. My brand new pump is leaking 2 weeks after install. Probably leaked from day one. It did have support bracket, and I was very careful in my Install. Nothing forced or dropped. Tightened pup flange to engine before tightening support bracket etc. I do have room to do a front belt drive pump.Last Post by:
posted: 2 years ago
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Cummin Onan 9MDKWB ODOR ISSUE
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