nospam wrote:
> The pipe doesn't seem to go to the thermostat housing, it looks like it
> connects to the lower radiator hose.

that is the thermostat housing. honda have it on the return, not the
feed like most other manufacturers.

> How is the o-ring held in, it looks like
> the bolt that holds the pipe in place is the only clamp?

it's held in by the thermostat housing being positioned correctly. the
only thing that's sealing it is the o-ring.

> I looked at an
> exploded view on a honda parts site.
>
> "TeGGeR�" wrote:
>
>> nospam <nospam@nospam.com> wrote in news:44D13E0C.613AA12D@nospam.com:
>>
>>> I came home today after driving and had coolant in the driveway
>>> originating from the left side front dripping near the oil pan bolt. I
>>> put the car on ramps and tried to find the leak. The leak does not
>>> occur when the car is running, only after you shut it off (which is
>>> common for a water pump). I saw some fluid leaking from the pipe that
>>> goes into the back of the water pump which is sealed with an o-ring.
>> That's the thermostat-to-water-pump pipe.
>>
>>> Has anyone ever seen this seal go?
>> Yes. Due to either
>> 1) neglected coolant changes, or
>> 2) rust, or
>> 3) age drying out the O-rings.
>>
>> #1 and #3 are most common.
>>
>>> The car has 160,000 miles. It could
>>> be the water pump but it doesn�t look like it is weeping from there but
>>> it is hard to tell. The pipe that comes from the water pump has other
>>> pipes connected to it, but it doesn�t look like they are leaking.
>> Those hoses feed certain engine controls. They don't usually leak. At least
>> not catastrophically.
>>
>>
>>
>>> It
>>> looks impossible to get at the pipe that comes out of the back of the
>>> water pump. Any suggestions would be appreciated. I plan on taking the
>>> shroud off so that I can get a better look at where the leak is.
>> Do that. The pipe can be removed once you take off the thermostat housing.
>>
>> --
>> TeGGeR�
>>
>> The Unofficial Honda/Acura FAQ
>> www.tegger.com/hondafaq/
>
>