[William Walter]

Two years ago I also removed my fuel cooler.The fuel line that ran to the back of the cooler had a slight leak so I just removed it. I took the line at the front of the cooler and it reached the fitting where the hose was that went to the back of the cooler. It didn’t match up so I came up with this fitting in between as shown in picture. I have since replaced the tape as it started to leak with a pematex product. No leaks now.

[William Walter]

So before I started into changing my fresh water pump I sprayed the front end with wd .the squeal went away and stayed away after running for a while.This led me back to maybe a hose . I wrapped all the hoses in the area in paper to see if any blue antifreeze shows up.If nothing shows up there I’ll try to get something under the fresh water pump.This may be hard to do due to access.Any other suggestions appreciated.Bill 

[William Walter]

Ever since I changed my hoses last year I’ve had a coolant leak on my stbd engine. I thought it was a hose connection but today after changing fuel filters and running the stbd engine I noticed a squeal from the front of stbd engine. So I suspected the water pump as a possible source. I researched on the website and found this thread.Tony answered my first thought about the leak possibility. Would a failing pump also be the source of the squeal. I imagine it’s an anti freeze drain and a few bolts to change that pump.Thanks Bill 

[William Walter]

Sorry picture did not go thru. I’ll try again.

[William Walter]

Steve These are my numbers. 480 ce. Probably over the curve a bit but I typically run at 2100 . I do not have egt but load is usually below 60 percent at 2100. Hope this helps but different boats same engines. I’m at about 26 thousand pounds.Bill

[William Walter]

Ray I have a 38 tiara open so my numbers probably would be of little use to you.The 38 open with mechanical engines was propped 28 by 24.when tiara put the 480 ce in they propped it 30 by 24. The extra 2 inches probably killed those engines in tiara’s at least. I am am probably still over propped at 29 by 24.I’m still over propped but I really don’t push the boat as I burn 12.8 gallons at 2100 rpms.The boat moves along at 21.5 knots. The boat never exceeds about 65 percent load in all sea conditions.Unfortunately as the season goes on those numbers go up but the boat moves along nicely at 2100 rpm’s.Bill 

1 user thanked author for this post.

Ray Isaac

[William Walter]

Ray The heads were done on my boat before my purchase on my 480 ce..Both engines dropped a valve in the 300 hr to 500 hr range.I have about 1300 hrs now.I have not had any issues but would still be interested if anyone has heard of any issues after head replacement as well.

[William Walter]

Rob Thanks for that info. I noticed slight movement of the thru hull portion when we removed so I’m nervous about that.it seems like if you need the flange adapter and the ball valve you might as well replace the whole thing. I was only looking for a cheap solution to help him out but it seems like there is none. He did mention just plugging the hole as he doesn’t ever pump overboard.The macerator is also inop .personally I like the overboard feature but only use it at end of season to really drain the tank and winterize. I may take you up on your offer for the thru hull tool. Thank you 

[William Walter]

Great to hear you figured out the problem.Especially without having a Cummins mechanic come out to the boat.Great to have a site like this where we can throw these issues around. I had to do similar with a trim tab wire that was shorted.Finally had to run a new wire from the switch to the motor.Bill 

[William Walter]

I suggest you get Corey involved in your post. This is his area of expertise.I’m sure he can help you. Somehow I think I was checking for power also and was able to find the pins for power .Found out I had none which led me back to the battery which is when I discovered the un connected lead.your problem sounds different but a worthwhile test to confirm power.

[William Walter]

I agree .Doesn’t sound like that fuse I have.Sounds more like a corrosion problem.Did you check the harness going to the ecm for corrosion.

[William Walter]

Michael On my 480 ce in a tiara I have fuse’s right at the battery that send power to the ecms.They are car like fuses. I neglected to put one of the terminals back on one time and I got the symptoms you have.my ecms are powered by the house side batteries.not sure why but maybe just a tiara setup. I would ck to see if you have those fuses. I bought extra fuses once I found out they were there because the engine will not start.Bill

[William Walter]

Tjborro I found those on Amazon. I was considering them also but the reviews weren’t great.About 100 bucks each.One reviewer said he got about a year and a half on his in the marine environment.But if you read all the reviews it’s hard to buy anything.They would seem to be a perfect solution if they last.Let us know.Bill

[William Walter]

Interesting approach as I have done similar but slightly different.my boat was on the hard and I really wanted some fresh water to flush through the system before I ran the the non tox anti freeze through. I used the fresh water tank to do that because all the water was shut down in marina. I hauled late and had to deal with it. I then put in the non tox for engines.What you have to realize in your situation is that what you put in your water tank is not what you should put in your engine.The two are different bases and I use separate applications for both. I think the main concern is keeping enough fluid to the impeller.if the impeller is out I don’t see any reason you couldn’t start without overheating if you ran for a short time. I had no problem running off the water tank although it’s probably marginal.Bill 

[William Walter]

Thanks for all the ideas.Some good suggestions. I think a better solution would be a pad that is designed to only come on when below a certain temperature. I know the pads were mostly designed for winter operations on cars and trucks. Perhaps a version for marine use could be designed that has a temperature sensor so they would be more effective for 24/7 operation..I’m sure they would cost more but we have boats so we are used to that.

[William Walter]

Rob when I talked to the rep he told me the life of the pad would be reduced significantly if they were left on 24/7.He gave me a number of hours for the life expectancy of the pads which I’m sure I never approached so I had to wonder why mine failed. I’m pretty sure the installation was good so I started thinking about how I used them.Since I thought they were 24/7 I never hesitated to turn them on when leaving boat and the engines were still hot.I’m guessing that they should never be turned on until the pan has cooled to a certain point.Just a guess at that.

[William Walter]

Clark I agree with all you wrote. I’m sure my install was not the issue .They were prepped properly and are very tight on the pan at this time. From what I read on this site I was led to believe they could be used 24/7.After talking to the manufacturer tech department I was told that was incorrect.They have a finite life which everything has but it’s not as long as we would like. I’m thinking my time was cut down because of overheating. I would sometimes turn them on when I was leaving the boat and the engines were still hot.Not sure if that was my issue but maybe. I wanted them on while I was away and thought nothing more about it till they both quit.

[William Walter]

So after a few bloody knuckles as Tony said I found the problem.The stainless exhaust pipe has a pinhole leak. The pipe was only 3 years old so it was the last thing I checked. Can I get it welded or would some other applications be better.Bill

[William Walter]

Matt I also have a 38 open with 480 ce engines. I installed the wolverines about a year and a half ago. I was hoping for a reduction of white smoke on start up but have seen only a slight difference. I have noticed the engines idle better at start because they are are warmer.Water temperature seems to be about 20 degrees warmer than ambient at start.The best benefit seems to be how dry my bilge is . I think not having all that moisture saves a tremendous amount in the corrosion department. I run them all the time at the dock.A very worthwhile investment.Bill

[William Walter]

RS I also have a 480 ce.My engines idle at 600 exactly. I do have a slow idle button which brings the idle to 550.Typically I use this only when engines are warm.Tiara warns that the engines could stall at this rpm and it should never be used for docking.So I would think if your idle is too low it could be an issue as Steve said. I have never had the engines stall though at 550 when shifting but it is a possibility I think mostly when cold.Bill

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