Phillip is correct, when the cap is on it will just vent coolant when the pressure builds too high as its running.
The problem is not that the coolant boils per-say its that I can't keep coolant in the engine. -Curt Date: Sat, 15 Jun 2013 23:31:01 -0500 From: Fmiser <fmi...@gmail.com> To: mercedes@okiebenz.com Subject: Re: [MBZ] I think its the end Message-ID: <20130615233101.2d66f...@seth.condray.lan> Content-Type: text/plain; charset=US-ASCII > > > Luther wrote: > > > > > > Good call. The radiator cap needs to be tight as being loose will > > > lower the boiling point of the water. Loose cap = nearly > > > atmosphere pressure, tight cap should be 3 bar/45psi (I think?). > > On 6/15/2013 3:56 PM, Craig wrote: > > > > No, that's the oil pressure gauge. Radiator caps are around 1 > > bar/15 psig. > Luther wrote: > > Thanks, I had a feeling I was wrong. The point is that pressure in > the cooling system helps raise the boiling point. But in this case, it doesn't matter. The pressure cap does not change the temperature, so if it's getting too hot, putting the cap on tight won't fix it. It _may_ keep the coolant from boiling, though. Curt's problem is that it's getting too hot. The non-tight cap in immaterial. -- Philip _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
