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Registered
2001 ML 320
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59 Posts
Discussion Starter · #1 ·
Hey guys very appreciative of all my answered questions lately, however need some tips and tricks to troubleshoot a leak.

Leak is on driver's side and to me looks as if the leak is from one of hoses connected to that side radiator. I can't really tell if it's coolant or power steering fluid.

I have replaced the top radiator hose however I used the same original MB clamp which I am going to change. I have also replaced the hose that goes to power steering pump. I have the hose that goes from radiator to rack but haven't changed that yet.
Still leaking same location after some of the fixes.
Any tips I can try to definitely find the leak?
Could it be the metal nipple from radiator that the hoses attach to? I have never seen that happen but possible?

Thanks
 

W163 and General M Gremlin
Joined
16,987 Posts
Color of the fluid leaking out to the ground?
Coolant vs. PS fluid color is different.
 

W163 and General M Gremlin
Joined
16,987 Posts
Color of the fluid leaking out to the ground?
Coolant vs. PS fluid color is different.
Put some UV dye into the coolant only.
Get yourself blacklight flashlight (good to have too in your arsenal of tools, to find ac leaks)
Monitor.
 

Registered
Dallas, Texas
Joined
13,433 Posts
I have the hose that goes from radiator to rack but haven't changed that yet.
Still leaking same location after some of the fixes.
That lower PS cooler hose was subject to several service campaigns. High pressure screw type clamp is only thing to use on both hoses.
Wrap clean paper towel around affected area in the evening and look at it in the morning.

 

Registered
2001 ML 320
Joined
59 Posts
Discussion Starter · #6 ·
That lower PS cooler hose was subject to several service campaigns. High pressure screw type clamp is only thing to use on both hoses.
Wrap clean paper towel around affected area in the evening and look at it in the morning.


Update.

I replaced the upper coolant hose clamp from the original MB to a new one and also the upper ps hose to pump. Placed cardboard piece under each hose going to radiator and no leaks for past three days. Now today noticed PS fluid dripping from torsion bar. I believe the lower ps hose runs above that bar going to rack. I will be changing that hose tomorrow with a new one from FCP Euro.
Will update after hose is replaced.
 
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