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 Coolant Flush Question

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Mattb



Posts : 91
Join date : 2015-06-19
Age : 40
Location : NY, NY

PostSubject: Coolant Flush Question   Fri Oct 02, 2015 1:11 pm

On a 96 Roadmaster wagon are there two knock sensors (one on each side) that double as block drain plugs or is there one KS and one actual drain plug?
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Bert Slater

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Posts : 252
Join date : 2015-03-23
Location : Melrose Florida

PostSubject: Re: Coolant Flush Question   Fri Oct 02, 2015 3:06 pm

actually the shop manual says both knock sensors are drains. I hate breaking things and put in a prestolite flush kit hooked up to the heater hose. then after circulating flush through the system 2 days I warmed it up with cap off reservior tank and then when ready to flush, cracked/opened radiator drain replacing coolant with water from hose. I continued to run, radiator cap off, hose on medium, regulating level with the radiator drain plug. Once I was sure it was totally flushed, I turned off hose , radiator drain and engine and let it cool. once cool, I drained the radiator fully and closed, water off.
Now is a great time to replace thermostat and radiator drain plug. Then I added 1/2 of total capacity in 100 percent coolant. Mixing 50/50 there is no way to allow for water still in engine. Then top off with fresh water.
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Mattb



Posts : 91
Join date : 2015-06-19
Age : 40
Location : NY, NY

PostSubject: Re: Coolant Flush Question   Fri Oct 02, 2015 3:15 pm

Thanks! I wasn't sure if I should buy one or two knock sensors. I just want to be prepared if they break.
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