[W126 Coupe] MBCOUPES Digest, Vol 47, Issue 11

[Mike R.]

Like Dick said, get a new overflow tank cap first to make sure you're using 
a pressurized system. Once the engine's cooled down, remove the cap and 
smell the "air" in the overflow tank to see if it smells like exhaust fumes. 
Your bubbling can come from a blown head gasket. If you're not sure that's 
it, an emissions station up-the-tailpipe probe put in the tank while it's 
bubbling can sniff for any exhaust fume components (e.g., HC, NO, CO2). It, 
obviously, shouldn't have any of those gases.

If you haven't replaced the upper radiator hose within the last couple of 
years, that's a good thing to do now. A stiff upper radiator hose transmits 
the normal rocking of the engine into the plastic radiator neck, snapping it 
off eventually.

Later,
Mike Ramay
(702) 494-8056
----- Original Message ----- 
From: "btb management" <btbmanagement at hotmail.com>
To: <mbcoupes at mbcoupes.com>
Sent: Tuesday, July 08, 2008 9:57 AM
Subject: Re: [W126 Coupe] MBCOUPES Digest, Vol 47, Issue 11



>

> Thanks Dick.  There is an extreme overheating in the overflow which

> makes the hood too hot to touch...the gurgling is boiling even though

> the temp doesn't hit the red zone.

>

>

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