coolant flush and fill

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shoman95

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I'm going to do one this weekend as part of my 60k service. Any specs I should know? Should I just follow the directions on the coolant cleaner?
Any feedback will help.
 

olympic

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Make sure you remove both drain plugs in the block to get all the old coolant out. Refill the system with water, run the car for a bit until the thermostat opens and then drain it again. Repeat until the water comes out fairly clean. Remove the coolant resevoir and clean it out too. Refill with a 50/50 mix of antifreeze and distilled water(not tap water!).
 

shoman95

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Where are the bolts located? what size socket will I need and is it easy to reach?
 

olympic

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I can't remember exactly but the front one is somewhere above and to the passenger side of the oil filter. The rear one is behind the exhaust manifold collecter. They are just brass plugs screwed into the block and fairly easy to spot(you may need a flashlight to see them though). You'll need a ~13mm socket to turn them out.

If no coolant comes out, stick a screwdriver in the hole to break the scale that's blocking the hole. Just have your head and body out from underneath because it will be real messy! :)
 

pjtoledo

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olympic:
I can't remember exactly but the front one is somewhere above and to the passenger side of the oil filter. The rear one is behind the exhaust manifold collecter. They are just brass plugs screwed into the block and fairly easy to spot(you may need a flashlight to see them though). You'll need a ~13mm socket to turn them out.

If no coolant comes out, stick a screwdriver in the hole to break the scale that's blocking the hole. Just have your head and body out from underneath because it will be real messy! :)
14mm, and since they are brass, use a 6 point socket.

Perry Toledo,Ohio
 

haydenm315

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pjtoledo:
olympic:
I can't remember exactly but the front one is somewhere above and to the passenger side of the oil filter. The rear one is behind the exhaust manifold collecter. They are just brass plugs screwed into the block and fairly easy to spot(you may need a flashlight to see them though). You'll need a ~13mm socket to turn them out.

If no coolant comes out, stick a screwdriver in the hole to break the scale that's blocking the hole. Just have your head and body out from underneath because it will be real messy! :)
14mm, and since they are brass, use a 6 point socket.

Perry Toledo,Ohio
Found them both and just got a coolant bath :) What are the torque specs on them?

<small>[ November 13, 2002, 07:26 PM: Message edited by: haydenm315 ]</small>
 

Chrisssssssss

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One side note, just be careful not to use that "rad flush" stuff. It cost me my radiator and heater core. I guess the rust and caked on crap was the only thing that was holding the cooling system together.
 

haydenm315

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Chrisssssssss:
One side note, just be careful not to use that "rad flush" stuff. It cost me my radiator and heater core. I guess the rust and caked on crap was the only thing that was holding the cooling system together.
I've got some prestone super flush stuff. I'm not sure whether or not to use it. It says safe for all metals. Can I get a decent flush without running the motor. I've got a pump and a garden hose. I tend to think I should be able to get a good flush. How do I get the coolant back in the motor without starting? Pour my mix down the thermostat hatch?
 

olympic

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You should get a descent flush by using a garden hose. Just disconnect the lower rad hose and flush the rad for a while. Then remove the thermostat housing, stick the hose in there and flush the engine for a while(with drain plugs removed). You may also want to disconnect one of the heater core lines and flush that as well.

If you have an OEM thermostat with the jiggle valve, you can fill the system through the radiator. It will take a while for all the air to work itself out but you should be able to get it reasonably full without starting the motor.
 

haydenm315

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olympic:
You should get a descent flush by using a garden hose. Just disconnect the lower rad hose and flush the rad for a while. Then remove the thermostat housing, stick the hose in there and flush the engine for a while(with drain plugs removed). You may also want to disconnect one of the heater core lines and flush that as well.

If you have an OEM thermostat with the jiggle valve, you can fill the system through the radiator. It will take a while for all the air to work itself out but you should be able to get it reasonably full without starting the motor.
got all that done. I filled the system from the line on the front of the iac valve. Coolant is up to the neck in the radiator. It's getting damn cold over hear on the east coast. I'm willing to bet it's not a pretty picture when an engine and cooling system freeze up because only water is in there. Glad I'm through with that.
 

performancered

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you don't want to use hose water to fill your radiator though. get distilled water it's like 60-80 cents a gallon and doesn't have the minerals that cause rust in it like hose water it's very pure.
 

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