I considered that, but here's the kicker... Only the lower hose has the spring and if I try to clean it, it returns to black which seems to be the way it came from the factory. I don't think the spring itself is rusting - it seems to be a surface that rust collects, but that's it. I didn't try to remove the spring because I didn't want to distort it. I think changing the lower hose would eliminate some build up in the part of the spring I could not clean. As an example, if I pull on the spring and rinse water through the house, It takes a few seconds for the water to be perfectly clear again. Maybe the rust came from the head, not the block? Both are cast iron.
On Sat, Jun 2, 2012 at 12:39 PM, Rich Thomas < richthomas79td...@constructivity.net> wrote: > Maybe those springs? > > --R > > > On 6/2/12 1:51 PM, Brian Toscano wrote: > >> Last night I drained the coolant from the drain plug on the radiator. >> What >> came out first was bright green. After a little bit, it turns rusty >> brown, >> and then turned to dirty coolant. This was just draining. Likewise, what >> is in the expansion tank is typically rust colored and when I poured clean >> water into the heater core, what came out was rust colored. What I >> removed >> the water pump what I saw was dirty coolant, but the inside of the engine >> (outside of the cylinder wall for #1) looks perfectly fine and rust-free. >> It makes me think the coolant does separate as it cools. >> >> The water pump itself looks fine also. A gasket leak developed on the top >> of the pump after I did the first round of flushing. >> >> What has the most crap buildup are the heater hoses. The supply and >> return to the heater core have a rust buildup inside. The lower radiator >> hose has a large spring in it almost the entire length and that spring >> holds a ton of crap. It makes me wonder where all this rust comes from if >> the inside of the engine looks fine. >> >> On Mon, May 28, 2012 at 8:39 AM, Brian >> Toscano<brian.toscano@gmail.**com<brian.tosc...@gmail.com> >> >wrote: >> >> I considered that the dark radiator has an effect on the coolant. The >>> bright green when in the radiator is almost clear in a coolant tester. >>> However, what's in the expansion tank is darker. The original problem >>> has >>> been fixed. The flushing I did definitely helped. I'm not expecting >>> 100% >>> perfectly new looking coolant in 11 year old engine with cast iron block >>> and head. >>> >>> >>> On Sun, May 27, 2012 at 9:26 PM, Max<meadedil...@bellsouth.net> wrote: >>> >>> Remove a sample from the radiator and another from expansion tank to >>>> compare side by side; it's awfully hard to judge color inside a dark >>>> radiator. >>>> >>>> Did you fix the original problem? >>>> >>>> I think your flushing method failed. >>>> -- >>>> Max Dillon >>>> Charleston SC >>>> '95 E300, '87 300TD >>>> _______________________ >>>> >>>> ______________________________**_________ >>>> http://www.okiebenz.com >>>> For new and used parts go to www.okiebenz.com >>>> To search list archives >>>> http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> >>>> >>>> To Unsubscribe or change delivery options go to: >>>> http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> >>>> >>>> >>> ______________________________**_________ >> http://www.okiebenz.com >> For new and used parts go to www.okiebenz.com >> To search list archives >> http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> >> >> > ______________________________**_________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives > http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> > _______________________________________ 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
