C32 coolant leak w/ video
Thread Starter
Senior Member
Joined: Aug 2010
Posts: 347
Likes: 0
From: Ontario, Canada
2002 C32 AMG
C32 coolant leak w/ video
Hey guys,
So I've been losing coolant on a steady basis for the past 6 months. Up until now I couldn't see any leaks. I could just smell heavy coolant fumes. Today, low coolant light came on and I saw a trail of coolant behind me as a I pulled away.
Doesn't looks serious I hope. My rad has been replaced with a BEHR about 2 years ago. It looks like it's leaking from the internal clamp/seal. What a pain that Mercedes uses such complex fitments. Why can't I just have a normal radiator neck and clamp. Anyways, any idea if this is a common issue or possibly what parts I need? I think I've replaced the upper rad hose ages ago so I don't recall how to remove it. Anything in particular I should be looking for? Does that metal piece between the hose and rad look seated properly? I just hope the neck isn't cracked.
thanks.
Bry
So I've been losing coolant on a steady basis for the past 6 months. Up until now I couldn't see any leaks. I could just smell heavy coolant fumes. Today, low coolant light came on and I saw a trail of coolant behind me as a I pulled away.
Doesn't looks serious I hope. My rad has been replaced with a BEHR about 2 years ago. It looks like it's leaking from the internal clamp/seal. What a pain that Mercedes uses such complex fitments. Why can't I just have a normal radiator neck and clamp. Anyways, any idea if this is a common issue or possibly what parts I need? I think I've replaced the upper rad hose ages ago so I don't recall how to remove it. Anything in particular I should be looking for? Does that metal piece between the hose and rad look seated properly? I just hope the neck isn't cracked.
thanks.
Bry
Last edited by Autotechnica; Oct 10, 2013 at 08:18 AM.
Newbie
Joined: Sep 2013
Posts: 9
Likes: 0
2005 c55
My 55 was leaking from right underneath the upper rad hose and.when i replaced it it ended up just being a small hair line crack that leaked pretty good and since i had 90k on the original rad it was time for it to be replaced anyway dont want to get my trans fluid contaminated
Thread Starter
Senior Member
Joined: Aug 2010
Posts: 347
Likes: 0
From: Ontario, Canada
2002 C32 AMG
If/when my S/C goes, I'm considering a turbo build.
BTW, do you guys think I'm looking at just the rubber O-ring then? A bit disappionting since the hose itself is quite new. I noticed that a lot of online stores sell the entire hose with the O-ring on it. Can I buy just the o-ring seperately? Anyways, will pull apart tonight to confirm it's not a cracked rad neck. I was losing coolant in the overflow tank and my coolant systems are isolated w/ the needswings iso kit, so I knew it wasn't my S/C. Had to be something on the engine side.
thanks.
Thread Starter
Senior Member
Joined: Aug 2010
Posts: 347
Likes: 0
From: Ontario, Canada
2002 C32 AMG
My 55 was leaking from right underneath the upper rad hose and.when i replaced it it ended up just being a small hair line crack that leaked pretty good and since i had 90k on the original rad it was time for it to be replaced anyway dont want to get my trans fluid contaminated
The C55 probably didn't suffer from the Valeo gycol contamination issue since it's already a later M/Y. If the neck is cracked, might try repairing with JB Weld. I've rebuilt cast aluminum waterpump housings from JB Weld that held without problems.
MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,140
Likes: 2
From: Ashburn, VA
2004 C32, 2006 Honda CBR1000RR, 2007 Harley NightRod, 2013 Harley Road Glide Custom
Mine has a slow leak too.....
Mine takes about 18 days or so, then low coolant comes on. Dealership pressure checked it and was fine. Maybe on the next nice day, I will see if I can find where the coolant is going. My car runs great, nice and strong with 103k on the odometer.
Bob
Bob
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MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,140
Likes: 2
From: Ashburn, VA
2004 C32, 2006 Honda CBR1000RR, 2007 Harley NightRod, 2013 Harley Road Glide Custom
Thanks. Will check...It's been bugging me and I finally have time to look at it this weekend. I've been riding around with the MB coolant premixed in a jug- tucked in the trunk...
MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,140
Likes: 2
From: Ashburn, VA
2004 C32, 2006 Honda CBR1000RR, 2007 Harley NightRod, 2013 Harley Road Glide Custom
MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,140
Likes: 2
From: Ashburn, VA
2004 C32, 2006 Honda CBR1000RR, 2007 Harley NightRod, 2013 Harley Road Glide Custom
Found the leak!
Looks like the coolant tank is at fault. It appears the seal where the black top portion meets the white/clear bottom. My question is whether or not I need to order oem or aftermarket? oem looks like $130 vs others are much less.
Bob
Bob
