Pajero 4WD Club of Victoria Public Forum Pajero 4WD Club of Victoria Public Forum

Go Back   Pajero 4WD Club of Victoria Public Forum > Vehicles > Generation 4-1 Pajero

Generation 4-1 Pajero NS Model 2006 - 2009

Reply
 
Thread Tools Display Modes
  #1  
Old 1 Week Ago
Powolo Powolo is offline
Junior Member
 
Join Date: Dec 2016
Location: Perth
Posts: 7
Default Coolant leak - where is it coming from?

Hi guys,

I had my car apart for a few days while waiting for a new exhaust manifold and today I had a look for a coolant leak (I've been having a very slow leak for a few months, only had to top it up once in half a year though). Spotted it straight away under RH exhaust manifold, at the front of the engine - see pics. I'm sure it wasn't there when I removed the exhaust manifold one week ago - so it looks like it only happens when the car is cold for a long period of time.

Where do you think it is coming from?
Attached Images
File Type: jpg Webp.net-resizeimage.jpg (122.4 KB, 59 views)
Reply With Quote
  #2  
Old 1 Week Ago
pneumatic pneumatic is offline
Junior Member
 
Join Date: Oct 2019
Location: Camp Mountain
Posts: 17
Default

There appears to be a Welsh plug near the top of the leak, they sometimes leak.

Sent from my SM-G930F using Tapatalk
Reply With Quote
  #3  
Old 1 Week Ago
benckj benckj is offline
Senior Member
 
Join Date: Oct 2017
Location: Alexandra
Posts: 361
Default

Quote:
Originally Posted by pneumatic View Post
There appears to be a Welsh plug near the top of the leak, they sometimes leak.

Sent from my SM-G930F using Tapatalk
Welsh plug??
Iím chasing a leak as well on my NS. Running out of ideas.
Reply With Quote
  #4  
Old 1 Week Ago
aussieintas's Avatar
aussieintas aussieintas is offline
Valued Member
 
Join Date: Feb 2013
Location: Sorell, Tasmania
Posts: 1,951
Default

Quote:
Originally Posted by benckj View Post
Welsh plug??
Iím chasing a leak as well on my NS. Running out of ideas.
I think you're asking what a welsh plug is....if not sorry.

Simplified its used during the casting of block or head of engine but then capped off using a welsh or core plug.....pic below. Looking at Partsouq.com the 3.2 has around 8 of them on the block and 1 on the head.
Attached Images
File Type: jpg Screenshot_20200917-171115_Samsung Internet.jpg (88.2 KB, 16 views)
__________________
2008 NS X SWB DiD auto in cool silver, Pirelli Scorpion ATR's, MCC bull bar with Stedi Summit fog/DRL's, Airtec(TJM) snorkel.

Previously
88 NF SWB 2.6 manual
92 NH LWB 3.0 auto
92 NH J-Top 2.5 manual
95 NJ SWB 3.0 auto
99 Cruiser 4.5 manual with all the fruit
Reply With Quote
  #5  
Old 1 Week Ago
Kingbrown Kingbrown is offline
Valued Member
 
Join Date: Apr 2012
Location: Port Augusta - SA
Posts: 1,217
Default

Actually it's a WelCh plug, but same same.

I remember as a kid, dad's engine sprang a leak when we were leaving on a trip to the big smoke. Our neighbour, a boilermaker cum fitter chiselled a piece of metal out of the lid of a 44 gallon drum and fashioned a replacement Welch plug. We were on the road in no time at all.
__________________
2012 PB Challenger LS Manual

Last edited by Kingbrown; 1 Week Ago at 07:40 PM.
Reply With Quote
  #6  
Old 1 Week Ago
benckj benckj is offline
Senior Member
 
Join Date: Oct 2017
Location: Alexandra
Posts: 361
Default

Thanks for the clarification as Iíve only known them as ďfreeze plugsĒ.
On the US V8ís itís common to see them rust through causing pin hole leaks.
Reply With Quote
  #7  
Old 1 Week Ago
BruceandBobbi BruceandBobbi is offline
Valued Member
 
Join Date: Aug 2016
Location: NSW
Posts: 1,647
Default

When i was recently chasing a leak on our NS DiD it took many frustrating weeks. Finally found it. The coolant was leaking out the small round hole on the top of the water pump.
Reply With Quote
  #8  
Old 1 Week Ago
erad erad is offline
Valued Member
 
Join Date: Mar 2015
Location: Cooma NSW
Posts: 3,243
Default

The small hole on t op of the water pump is actually a drain to take away the seepage past the water pump seal. It should be dry at all times of course, but if the seal does seep, at least hopefully the bearings will not be affected.
Reply With Quote
  #9  
Old 1 Week Ago
BruceandBobbi BruceandBobbi is offline
Valued Member
 
Join Date: Aug 2016
Location: NSW
Posts: 1,647
Default

I was losing 250 to 350ml a day. New pump and no more loss of coolant.
Reply With Quote
  #10  
Old 1 Week Ago
tonero tonero is offline
Junior Member
 
Join Date: Sep 2020
Location: USA
Posts: 10
Default

Quote:
Originally Posted by pneumatic View Post
There appears to be a Welsh plug near the top of the leak, they sometimes leak.

Sent from my SM-G930F using Tapatalk
i agree with you, leaks like these occur more frequently than you think and its because of general wear and tear
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant leak. BruceandBobbi Mechanical 23 27-07-20 10:11 PM
Coolant Leak - Need HELP with this one GHendo Generation 3 Pajero 25 03-06-17 04:30 PM
Coolant (?) coming out of accessory bracket bolt hole. SlimPickins Generation 2 Pajero 3 19-02-16 06:45 AM
Coolant leak madmik PB -PC Challenger 2009 - 2014 3 19-09-14 12:05 PM
98 3.5l coolant leak nwt1976 Mechanical 3 21-12-12 02:13 PM


All times are GMT +10. The time now is 02:12 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.