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Volvo Penta D1-30 losing cooling fluid

Printed From: myHanse.com
Category: General
Forum Name: Chit Chat
Forum Description: Talk about anything to do with your boat
URL: http://www.myhanse.com/forum_posts.asp?TID=12882
Printed Date: 17 October 2021 at 12:57
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com


Topic: Volvo Penta D1-30 losing cooling fluid
Posted By: Ian2019
Subject: Volvo Penta D1-30 losing cooling fluid
Date Posted: 13 July 2021 at 16:47
Hi I have a Volvopenta D1-30 in my beautiful 2014 H385 however recently I have been losing the internal cooling fluid, there is no sign of leakage on the engine casing all connection are sound. I have had the heat exchanger out and acid washed (slightly crusted now as new) and pressure tested which found no leackage in any of the tubes. So I am a little puzzled. Greatful for any ideas????  

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H385 #317 2014 "ARLOKO" Tivat Montenegro



Replies:
Posted By: pdc78
Date Posted: 13 July 2021 at 16:51
Have you checked the calorifier?  It could be leaks in the plumbing under the floor or that the coil in the calorifier is rotten.

Good luck, Paul


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H345 #269


Posted By: Ian2019
Date Posted: 15 July 2021 at 04:58
Thanks Paul for your comment and recommendation, I am not able to get to the boat for a week or so but will check this out. In the meantime can you please explain your reasoning as I do not fully understand the connection between the engine heat exchanger and the fresh water heater under the port aft cabin. The waster heater on the boat is an Eberspacher D4 diesel fuel heater. 
Regards 


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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Ian2019
Date Posted: 15 July 2021 at 05:04
Sorry Paul I was mistaken it is the "Air" heating on the boat which is from the Eberspacher D4 heater.
Regards 


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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Ian2019
Date Posted: 18 July 2021 at 04:57

Thanks Paul I think you were right in your post regarding the calorifier so 

1. The intercooler is ok with no defective tubes.

On testing the engine it still lost coolant?

2. Disconnected the calorifier

On testing the engine I noted that when the reservoir cap is screwed on tight the level goes down but when the cap is left lose the liquid level remains the same. Also there is what appears to be a small amount of coolant (and maybe air) coming out of the what I would call the "breather" pipe from the top of the interchanger jacket.  I ran the engine for 1hr at tickover and then for 1 hr at 2000rpm and everytime when tighening the cap the level goes down. 

I read in one of the Volvopenta D1-30 manuals that the coolant is circulated under slight pressure, if the pressure gets too much there is a pressure relief system in the cap, could this be the problem?

My questions are  

1. Has any other D1-30 owners had this problem?

2. Any suggestions why when the cap is tight the liquid goes down and when lose stays as is?Confused


Regards



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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Ian2019
Date Posted: 18 July 2021 at 20:08
Yesterday after running the engine I took the cap home to see if I could figure out the pressure relief system. Some one has posted on another forum a picture of his cap and it has a brass centre which mine dose not have?

Today I went to boat to replace the cap and to my horror the reservoir was empty. I cant believe that 1/2 3/4 ltr of coolant has evaporated over night
Regards




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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: pdc78
Date Posted: 18 July 2021 at 20:20
Ian: when you say 'disconnected the calorifier' did you blank off the plumbing fittings?  It's hard to understand what exactly you are doing. Sorry, do you think it might be worth getting a marine engineer to have a look at it?

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H345 #269


Posted By: Ian2019
Date Posted: 19 July 2021 at 04:09
Hi pdc78,

Simply put;

I have had the intercooler out and serviced (acid washed and pressure tested) by a reputable company. Under the pressure test there was no leakage from any of the coolant tubes. So this illiminated the intercooler as the problem. The intercooler was replaced as before with new "O" rings. 

I took the coolant pipes off the calorifier and reconnected the pipes together using suitable brass nipple fittings, this ensures the flow of the coolant round the circuit as before but bypassing the calorifier. Therefore the calorifier is no longer in the system so this is not the problem.

I have been to the Volvopenta main dealers here and they can not physically assist till mid August but they have been in consultation and support. The work has been done by a friend who is an ex marine chief engineer of 30yrs at sea. 

At the moment both main dealers and my friend are scratching their heads.

I hope this makes things clear.

Anyway thanks for your interest in the post and suggestions 

   



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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Mschesser
Date Posted: 20 July 2021 at 02:38
Is there any sign of water/coolant in your oil?  A head gasket leak could allow water to leak internally into the oil system.  The result would be an increase in the oil level on the dipstick, but also the oil would become very "milky" or creamy in color and consistency.  Check your oil dipstick and the oil fill cap for signs of contaminated oil.

Good luck


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M Chesser, 370, “Red Sky”


Posted By: StavrosNZ
Date Posted: 20 July 2021 at 04:51
as per last post regards head gasket either leaking into oil or is there white smoke/steam coming out the exhaust if you have a head gasket leak it can leak into oil or exhaust outlet.

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Stephen
2010 H400 #691, Auckland, New Zealand


Posted By: Ian2019
Date Posted: 21 July 2021 at 04:46
Originally posted by Mschesser Mschesser wrote:

Is there any sign of water/coolant in your oil?  A head gasket leak could allow water to leak internally into the oil system.  The result would be an increase in the oil level on the dipstick, but also the oil would become very "milky" or creamy in color and consistency.  Check your oil dipstick and the oil fill cap for signs of contaminated oil.

Good luck

Hi Mschesser, thanks for your support and comments

I have changed the oil and filtter and there was no milkiness in the oil, the oil filler cap had no signs (droplets) of water on it. 
Since changing the oil there has been no raise in oil level. 
Cheers again for your suggestions 


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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Ian2019
Date Posted: 21 July 2021 at 04:52
Hi Steven,
Thanks for your valued comments and suggestions 

When the engine is running there is no white smoke or steam from the exhaust, it is how it has been since getting the boat a year ago. We have even taken samples of the exhaust outlet water.

ConfusedConfusedConfusedConfused 




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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Ian2019
Date Posted: 21 July 2021 at 05:54
Hi All 
Thanks to all of you who  have made valued comments and suggestions on this topic

It was suggested (somewhere) that it maybe the saltwater raw pump and I did have a very small drip from it, so two days ago I took the pump off and it is now being serviced. So I can not run the engine. I filled up the coolant reservior and to my surpise in the morning it was empty. Here are three photos 



Taken at 1334



Taken at 1341



Taken at 1642

This is the third time the reservoir has been filled. ShockedShockedThe engine can not be ran as no saltwater pump. There is no evidence of coolant anywhere to be seen even been over the side and looked at the exhaust outlet.

What I dont understand is the liquid is below what I belive is the feed pipe into the heat exchanger ConfusedConfusedConfusedConfused shown by red arrow.

Any suggestions welcome 
Desperate Ian 


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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: grumpydatagit
Date Posted: 21 July 2021 at 16:50
hi

Just a random thought Remove the reservoir from its mountings fill it up again and then lower it until it stops losing fluid - this should give you the level at which the leak is accuring =?

Tross


Posted By: Ian2019
Date Posted: 17 August 2021 at 05:27
Hi All,
To finish off the toppic
After extensive testing, there were two problems that manifested at the same time. One the head gasket. Not so simple to change. Secondly the casing of the heat exchanger had corroded (so I was informed this is a known design fault of VolvoPenta) 



  





Photo 1 was after removal, you can see salt deposits 
Photo 2 The pin prick leak after cleaning and taking the material back to something substantial so it could be welded The black line at the bottom of the unit is the hole. This unit is 7 yrs old.




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H385 #317 2014 "ARLOKO" Tivat Montenegro


Posted By: Fendant
Date Posted: 17 August 2021 at 05:59
Ian,
I had the same issue with my D1-30F. After leaving port I got the overtemperature alarm.
Stopped the engine and checked water filter ( ok) and changed impeller (ok ). Suspected the thermostat as the culprit?. No wind at all!  So Friend towed me back and a mech checked the engine next day : No cooling fluid! Nothing in the bilge ??
He is the Volvo specialist and services every year 100 - 200 engines. He never had a failure on the circulation pump.

He finally found a small leak ( about one drop every minute creeping along the engine housing ) from the circulation pump. So we refilled the cooling fluid and I made it back to my home port. Engine compartment cozy warm apparently let it evaporate over time. I therefore supect that this leak was unnoticed for months or even seasons. I admit that I checked the oil levels on engine and saildrive but never the cooling fluidEmbarrassed

Difficulty to source the pump "hey, it never fails", but the yard finally found a new original one.
Problem solved, no more drips, nice clean oil absorbing mat under the engine is still pure white after 5 motor hours. Bad part is that the Volvo pump price was 730.- € Angry



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Frank


Posted By: pdc78
Date Posted: 17 August 2021 at 07:06
I've been concerned from the outset that there is no pencil engine anode in the raw water side of the heat exchanger of the D1-30.  Do you think that the corrosion emanates from the raw side?  Frank - I believe you sail in fresh water so salt corrosion can't be the explanation.  Has anyone got any ideas what all D1-30 owners can do to reduce the risk of these problems?  Regards,  Paul

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H345 #269


Posted By: Ian2019
Date Posted: 18 August 2021 at 04:39
Hi Paul,
Yes the corrosion comes from the raw water side. In the casing just before the face that secures to the exhaust there is a small recess that the salt water sits in, this can be seen in the 1st photo where the yellow deposits are.



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H385 #317 2014 "ARLOKO" Tivat Montenegro



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