Join the C34 Association Today!
[C34 Home] [C34Tech Notes] [C34 Tech Wiki] [Join!]
Please login or register.
Advanced search  

News:

Pages: 1 2 [3] 4   Go Down

Author Topic: Engine loosing coolant  (Read 722 times)

0 Members and 1 Guest are viewing this topic.

Ron Hill

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 58
  • Posts: 7392
    • View Profile
Re: Engine loosing coolant
« Reply #30 on: April 02, 2021, 10:15:28 AM »

 pby :  A saltwater leak from your raw water pump can ruin a lot of metal parts below it - is an understatement!!!!
 
I've known C34 owners that have had to replace the oil pan because the raw water pump leaked and the oil pan rusted a hole!!!

A thought
Logged
Ron, Apache #788

Ron Hill

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 58
  • Posts: 7392
    • View Profile
Re: Engine loosing coolant
« Reply #31 on: April 02, 2021, 10:18:48 AM »

pby : Another thing to think about :
If your leak is coolant - that Prestone mix can do a job on an engine mount rubber!!

A thought


Logged
Ron, Apache #788

KWKloeber

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 34
  • Posts: 3884
  • "Positive Impact" 1984 C-30 mk-I #3573 trbsfk M-25
    • View Profile
Re: Engine loosing coolant
« Reply #32 on: April 02, 2021, 11:24:21 AM »


I've known C34 owners that have had to replace the oil pan because the raw water pump leaked and the oil pan rusted a hole!!!


AND one that nearly had to replace a gear cover!!  :shock: :shock: :shock:
Logged
Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
Explore.  Dream.  Discover.   -Mark Twain

Stu Jackson

  • C34IA - Secretary
  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 70
  • Posts: 7894
    • View Profile
Re: Engine loosing coolant
« Reply #33 on: April 02, 2021, 11:44:12 AM »



AND one that nearly had to replace a gear cover!!  :shock: :shock: :shock:

And one that actually had to (Greg Sherwood, on SF Bay).  I don't think he ever found one, least last I heard.
Logged
Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

"There is no problem so great that it can't be solved."

KWKloeber

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 34
  • Posts: 3884
  • "Positive Impact" 1984 C-30 mk-I #3573 trbsfk M-25
    • View Profile
Re: Engine loosing coolant
« Reply #34 on: April 02, 2021, 12:40:07 PM »

Stu I COMPLETELY forgot about that.  Yes, I located him one in a boneyard.

Since then Iíve been trying to get my hands on half decent ones to refurbish and hold, just in case.
Logged
Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
Explore.  Dream.  Discover.   -Mark Twain

waughoo

  • Forum - Petty Officer 1st Class
  • *****
  • Karma: 3
  • Posts: 305
    • View Profile
Re: Engine loosing coolant
« Reply #35 on: April 02, 2021, 09:46:22 PM »

I had a leaking raw water pump and for all the reasons stated above, I put it at the top of the list when I found out.
Logged
Alex - Seattle, WA
91 mk1.5 #1120
Std rig w/wing keel
Belafonte

Ron Hill

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 58
  • Posts: 7392
    • View Profile
Re: Engine loosing coolant
« Reply #36 on: April 03, 2021, 01:22:13 PM »

Guys : That's why you need to take a peek at the engine when it is running.  The MK I C34s have a door on the starboard side to look at the M25XP water pump and a door in the head to look at the M25XPB water pump. 

Those raw water pumps do NOT leak when the engine is NOT running!!!   :shock:

A thought
Logged
Ron, Apache #788

pbyrne

  • Forum - Petty Officer 3rd Class
  • ***
  • Karma: 0
  • Posts: 64
  • 2000 Catalina 34 MK II #1534
    • View Profile
Re: Engine loosing coolant
« Reply #37 on: April 06, 2021, 07:44:50 AM »

I refilled the engine a couple of days ago and placed some shop towels around the engine.

It looks like the leak may be coming from high up on the engine at the rear of the manifold, where there is a connection that is wrapped in heat protection.  Also, it appears the hose on the heat exchanger looks cracked, and needs replaced.

I don't really know what I'm looking at or the implications.  Can anyone shed some light on what these photos are showing?
Logged
2000 Catalina 34 MK II #1534

pbyrne

  • Forum - Petty Officer 3rd Class
  • ***
  • Karma: 0
  • Posts: 64
  • 2000 Catalina 34 MK II #1534
    • View Profile
Re: Engine loosing coolant
« Reply #38 on: April 06, 2021, 07:46:33 AM »

And of course the recover tank, which I think is just up for replacement.  I don't see anything wrong with the hose and it looks like there is evidence of the clamp to tank connection leaking.  Clamp tension looks ok, but may have been too tight and cracked the plastic.
Logged
2000 Catalina 34 MK II #1534

KWKloeber

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 34
  • Posts: 3884
  • "Positive Impact" 1984 C-30 mk-I #3573 trbsfk M-25
    • View Profile
Re: Engine loosing coolant
« Reply #39 on: April 06, 2021, 09:43:27 AM »

I see drips hanging on at the bottom of the hose loop, but it looks like something was also leaking down the side of the hull, maybe from behind or at the top of the overflow reservoir?

The exhaust flange and exhaust riser is wrapped w/ insulation. 
If you have a leaky exhaust flange gasket or loose exhaust flange bolts, coolant can leak out from the exhaust manifold (It's screwy, but the gasket that sits between the exhaust flange and the exhaust manifold, separates the exhaust path from the coolant in the exhaust manifold.  if the gasket is damaged or on backwards, coolant is pushed out the exhaust.  For the leak to exit there, there would need to be a loose exhaust flange (joint open) otherwise coolant would simply exit out w/ the exhaust gasses.
A long shot to consider last.

FYI Westerbeke spray paints the engine (and hoses) when it's together so you MIGHT be seeing cracked paint that looks like a cracked hose.  I'm not saying don't replace it if it's "past its time."

Replace all the standard hose clamps w/ ABA or AWAB clamps!
ultimategarage.com
a good source, less $$$ than worst marine and Steeve is a good guy.

 
Logged
Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
Explore.  Dream.  Discover.   -Mark Twain

glennd3

  • Forum - Petty Officer 1st Class
  • *****
  • Karma: 4
  • Posts: 317
    • View Profile
Re: Engine loosing coolant
« Reply #40 on: April 06, 2021, 10:08:12 AM »

I see drips hanging on at the bottom of the hose loop, but it looks like something was also leaking down the side of the hull, maybe from behind or at the top of the overflow reservoir?

The exhaust flange and exhaust riser is wrapped w/ insulation. 
If you have a leaky exhaust flange gasket or loose exhaust flange bolts, coolant can leak out from the exhaust manifold (It's screwy, but the gasket that sits between the exhaust flange and the exhaust manifold, separates the exhaust path from the coolant in the exhaust manifold.  if the gasket is damaged or on backwards, coolant is pushed out the exhaust.  For the leak to exit there, there would need to be a loose exhaust flange (joint open) otherwise coolant would simply exit out w/ the exhaust gasses.
A long shot to consider last.



FYI Westerbeke spray paints the engine (and hoses) when it's together so you MIGHT be seeing cracked paint that looks like a cracked hose.  I'm not saying don't replace it if it's "past its time."

Replace all the standard hose clamps w/ ABA or AWAB clamps!
ultimategarage.com
a good source, less $$$ than worst marine and Steeve is a good guy.

Ken would you know what size clamps would you order that would fit most the hoses on my boat? I would like to replace most of them.
Logged
Glenn Davis
Knot Yet
1990 Catalina 34 Mk 1.5
Hull 1053
TR/WK
M25XP
Patapsco River
Chesapeake Bay Maryland

KWKloeber

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 34
  • Posts: 3884
  • "Positive Impact" 1984 C-30 mk-I #3573 trbsfk M-25
    • View Profile
Re: Engine loosing coolant
« Reply #41 on: April 06, 2021, 10:43:52 AM »

Most on the boat or most on your engine?
Logged
Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
Explore.  Dream.  Discover.   -Mark Twain

KWKloeber

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 34
  • Posts: 3884
  • "Positive Impact" 1984 C-30 mk-I #3573 trbsfk M-25
    • View Profile
Re: Engine loosing coolant
« Reply #42 on: April 06, 2021, 11:02:44 AM »


AND one that nearly had to replace a gear cover!!  :shock: :shock: :shock:


Stu what did you end up using?  I know originally JB, but wasn't there another repair material you considered? 
Did you use that?

-k
Logged
Twenty years from now you'll be more disappointed by the things you didn't do, than by the ones you did.
So throw off the bowlines.  Sail away from the safe harbor.  Catch the tradewinds in your sails.
Explore.  Dream.  Discover.   -Mark Twain

glennd3

  • Forum - Petty Officer 1st Class
  • *****
  • Karma: 4
  • Posts: 317
    • View Profile
Re: Engine loosing coolant
« Reply #43 on: April 06, 2021, 12:50:26 PM »

Most on the boat or most on your engine?

Engine
Logged
Glenn Davis
Knot Yet
1990 Catalina 34 Mk 1.5
Hull 1053
TR/WK
M25XP
Patapsco River
Chesapeake Bay Maryland

Ron Hill

  • Forum - Master Chief Petty Officer of the Navy
  • ********
  • Karma: 58
  • Posts: 7392
    • View Profile
Re: Engine loosing coolant
« Reply #44 on: April 06, 2021, 02:36:09 PM »

pby : From your pictures, you definitely need to take off your coolant recovery tank and inspect it.  I'll guess that the tank is your problem.
To repair that tank pin hole?/crack?  I'd clean that plastic and use electric glue. 

I don't think that you need to replace your hose clamps - your choice.

A few thoughts
Logged
Ron, Apache #788
Pages: 1 2 [3] 4   Go Up