Go Back  Offshoreonly.com > Technical > General Q & A
4.3 Mercruiser w/remote oil filter - leak? >

4.3 Mercruiser w/remote oil filter - leak?

Notices

4.3 Mercruiser w/remote oil filter - leak?

Old 07-27-2017, 11:02 AM
  #1  
Registered
Thread Starter
 
Join Date: Jul 2017
Location: Barnegat
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default 4.3 Mercruiser w/remote oil filter - leak?

I have a 2000 270 Sundancer with twin 4.3's w/remote oil filter kits. Been noticing small amounts of oil in the bilge coming from the port side of the port engine for a while. I jumped down in the bilge while the engine was running and noticed a slight oil drip that appeared to be coming from above the engine mount - what I was able to see was an occasional drip from under the hoses (I think the inside one to be specific). Really difficult to see.

So the question is and before I have to learn to stand on my head to remove and replace the 2 hoses, could it be something else I need to look at?

Engine oil level reads full which makes me a little suspicious of the drive reservor above - which I noticed a 1/4 reduction several times. I tied rags around the bottoms of both the drive reservoir and the remote oil filter - both dry as a bone...

Also, oil is dark in the bilge, looks nothing like the green merc drive oil...

Thoughts please ....
shorething2017 is offline  
Old 07-27-2017, 12:10 PM
  #2  
Were doomed!
Charter Member
iTrader: (1)
 
Wally's Avatar
 
Join Date: Oct 2000
Location: Chicago, IL
Posts: 6,668
Received 913 Likes on 459 Posts
Default

Try and tighten up the fittings on the hoses...they may have loosened up over time with the heat cycles...could be an easy fix....changing the long hoses is really not that hard to do....the hard one is the short one going to the cooler..if you have one which i think you should..other then that i personally have not seen or heard of the stock hoses going bad for anyone (not that it cant happen)
__________________
-Wally

Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
Wally is offline  
Old 07-27-2017, 12:41 PM
  #3  
Registered
iTrader: (1)
 
Join Date: Oct 2013
Location: SF Bay Area
Posts: 2,885
Received 142 Likes on 94 Posts
Default

You can get a dye to put in the oil at any auto parts store, and with a cheap black light see exactly where it's coming from. I was chasing a leak forever and that sorted out exactly where the problem was.
Baja Rooster is offline  
Old 07-27-2017, 04:32 PM
  #4  
Registered
Thread Starter
 
Join Date: Jul 2017
Location: Barnegat
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks gents!
in assume you mean the hose fittings directly under the remote oil filter. First things I checked. Dry and like the idea of the due. I'm going to check one last thing before replacing the hoses. Maybe there is a leak in the hose from the drive reservoir but don't it because the oil in the bilge appears to be engin oil.

Infuess the the only other thing it could be is one of the hoses unless there is something else on the port side of the engine above the hoses. Trid to see if the valve cover might be leaking but doesn't appear to be. The dye could be a good identifier.

Thanks again.
shorething2017 is offline  
Old 07-27-2017, 05:17 PM
  #5  
Registered
 
Join Date: Feb 2012
Location: westville, NJ
Posts: 4,031
Likes: 0
Received 9 Likes on 7 Posts
Default

Mean time get a bilge diaper and lay it out under that side of the engine. Pack of 6 is 10 bucks or se at west marine.
dereknkathy is offline  
Old 07-27-2017, 06:05 PM
  #6  
Registered
Thread Starter
 
Join Date: Jul 2017
Location: Barnegat
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Good idea thanks
shorething2017 is offline  
Old 07-29-2017, 03:12 PM
  #7  
Registered
 
Join Date: Jun 2011
Posts: 1,164
Received 110 Likes on 82 Posts
Default

Originally Posted by shorething2017
I have a 2000 270 Sundancer with twin 4.3's w/remote oil filter kits. Been noticing small amounts of oil in the bilge coming from the port side of the port engine for a while. I jumped down in the bilge while the engine was running and noticed a slight oil drip that appeared to be coming from above the engine mount - what I was able to see was an occasional drip from under the hoses (I think the inside one to be specific). Really difficult to see.

So the question is and before I have to learn to stand on my head to remove and replace the 2 hoses, could it be something else I need to look at?

Engine oil level reads full which makes me a little suspicious of the drive reservor above - which I noticed a 1/4 reduction several times. I tied rags around the bottoms of both the drive reservoir and the remote oil filter - both dry as a bone...

Also, oil is dark in the bilge, looks nothing like the green merc drive oil...

Thoughts please ....
It is likely the hoses that run from the filter mount to the engine pad mount. I had mine start to weep after a number of years. Same issue you have.
Trash is offline  
Old 07-29-2017, 03:47 PM
  #8  
Registered
Thread Starter
 
Join Date: Jul 2017
Location: Barnegat
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks- appreciate the response.
shorething2017 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.