coolant flush
07-20-2009, 10:59 PM
#1
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Thread Starter
coolant flush
trying to see if this method is correct...
drain coolant, then cap it off.
then fill with water and drain it till only water comes out.
drain fully and then plug it.
next lower the car.
then remove radiator cap and fill with a 1/2 gallon undilluted antifreeze.
then fill with water and add 50/50 mix to the resivoir.
then leave cap off and start motor and run until normal temperature;
while bleeding the air... then tighten and turn off engine.
fill radiator with 50/50 mix and fill the resivour to the max...
is this right?
drain coolant, then cap it off.
then fill with water and drain it till only water comes out.
drain fully and then plug it.
next lower the car.
then remove radiator cap and fill with a 1/2 gallon undilluted antifreeze.
then fill with water and add 50/50 mix to the resivoir.
then leave cap off and start motor and run until normal temperature;
while bleeding the air... then tighten and turn off engine.
fill radiator with 50/50 mix and fill the resivour to the max...
is this right?
Last edited by ej1love; 07-20-2009 at 11:09 PM.
07-21-2009, 01:53 AM
#3
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Re: coolant flush
07-21-2009, 02:59 AM
#4
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Re: coolant flush
dotn know if that is right (i say this becauseH-T is so politically correct 
)...but it would be the way i go if i didnt have acceess to a flush machine.
ill aslo add to your list... vvvvvv
i would jack car up for "bleeding procedure only". this allows the radiator neck to be the highest setting to get air bubbles out and trust me..you will get air bubbles whenever you drain the block. lol
it will take a couple of tries to get those air bubbles out..hondas are picky compared to other cars i have worked on.
you will be sittign there all night trying to fill the car up through the resovoir. you can go radiator side but be cautous if your adding while the vehicle is overheating. cold coolant on a really hot overheating radiator may crack the plastic. i have never seen this happen before but it sounds logical.
and one mroe note... turn heater vents on "hot" and full blast to help circulate the heater core hoses
)...but it would be the way i go if i didnt have acceess to a flush machine.ill aslo add to your list... vvvvvv
i would jack car up for "bleeding procedure only". this allows the radiator neck to be the highest setting to get air bubbles out and trust me..you will get air bubbles whenever you drain the block. lol
it will take a couple of tries to get those air bubbles out..hondas are picky compared to other cars i have worked on.
you will be sittign there all night trying to fill the car up through the resovoir. you can go radiator side but be cautous if your adding while the vehicle is overheating. cold coolant on a really hot overheating radiator may crack the plastic. i have never seen this happen before but it sounds logical.
and one mroe note... turn heater vents on "hot" and full blast to help circulate the heater core hoses
Last edited by waaBAAH; 07-21-2009 at 03:13 AM.
07-21-2009, 09:24 AM
#6
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Re: coolant flush
you dont have a heater core? lol
it might be more time consuming if you dont have a ehater core hooked up.
it might be more time consuming if you dont have a ehater core hooked up.
Last edited by waaBAAH; 07-21-2009 at 10:47 AM.
07-21-2009, 09:56 AM
#7
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Re: coolant flush
na i took it out a week ago 
i looped the lines that came from it... but its kinked a lil, think this will be a problem? havent started it up yet...
i looped the lines that came from it... but its kinked a lil, think this will be a problem? havent started it up yet...
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07-21-2009, 10:52 AM
#8
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Re: coolant flush
if an air bubble gets trapped in the loop...it will be a hard time to get it out. no big deal but just frustrating for you. lol good luck
07-21-2009, 10:57 AM
#9
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Re: coolant flush
yea lucky me, but im fixing the kink now. i dont think it will be a constant problem. plus there isnt any coolant in the car. so when i fill it it might not even be there. but, i was told that there is a bolt that i can release the pressure/air from the coolant. do u know where its located? cause im filling it today...
07-21-2009, 11:20 AM
#10
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Re: coolant flush
some civic's have them...some dont.
if it does have a bleeder for coolant it would be located on the thermostat housing or somewhere very close by.
if it does have a bleeder for coolant it would be located on the thermostat housing or somewhere very close by.
07-21-2009, 11:22 AM
#11
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Re: coolant flush
ok. how bout doing this?: fill the resivoir and the radiator full with distilled water and 50/50, and run the car with the radiator cap off till warm; watching the bubbles. refill if necessary... then cap it and make sure im all good. 
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