29 replies to this topic

[marcoleeau]

today i tired to replace my radiator.everything is fine until i try to refill the coolant back to the radiator from the reservoir. now the reserivor is full(reach the cap). i tried to run the car until the fans on but the coolant still not going to the radiator help

[Robert]

Where are you filling

The tank on the radiator or the tank on the engine ?

[marcoleeau]

the coolant reservior. sorry i forgot to mention that my car is a b4. no radiator cap

[Robert]

Sounds like an air lock or blocked hoses

Running the car should have helped purge it though

[Matt]

When you say reservior

Do you mean the header tank as shown in this pic

[marcoleeau]

no. its the coolant bottle next to radiator

[Matt]

Thats your overflow bottle lol

Youll never get coolant in that way

[Matt]

That takes the coolant upon expansion in yhe coolant system and sucks it back in when cooled down

It should only ever be filled up to the full mark max

The header tank in the pic i showed you is where you fill the coolant system from

Word of wisdom...research a good diy on the net for a coolant swap as subarus are notoriously bad to purge of air and you should have a bit of an idea of what to do to ensure you dont cook your motor

As running it without coolant till the fans turn on is very bad for the car..as without coolant in the system the twmp sensor will not read right

[marcoleeau]

can u show me the pic of a b4 header tank thx

[Matt]

Its identical to the one shown and in the exact same position

Only thing in the bay with a radiator cap

[marcoleeau]

good. after i put in about 6 ltr distilled water and coolant flusher and now the engine is overheating after 5 mins drive.any idea?

[Robert]

Did you make sure there was no air in the system?

Also coolant flush is suppose to be drained out after a while.

Don't forget you also need to put coolant in

[marcoleeau]

i just used distilled water and coolant flusher. is that the problem causing the overheating? i watched some youtube video and they only use water to flush the coolant syetem

[glenisanutter]

today i tired to replace my radiator.everything is fine until i try to refill the coolant back to the radiator from the reservoir. now the reserivor is full(reach the cap). i tried to run the car until the fans on but the coolant still not going to the radiator help

How long did you run the motor to make the fans go?

you have been running the motor with no water in the cooling system...you might have cooked the motor

[duncanm]

go back and read what people are telling you.

 

1. coolant goes in the header tank - the thing with the radiator cap

2. coolant flush must be removed (drained) and replaced with coolant

3. read a proper procedure on coolant replacement for subarus - air locks are common and must be avoided.

[surge]

What made you decide to change the radiator, was it overheating before you did that?

If not, it does seem possible that running the engine with no coolant (overflow bottle doesn't count) may have cooked the motor. You may have just ruined the head gasket and possibly warped the heads.

I will feel really bad for you if that's what happened. I learned the hard way that you don't run an engine without coolant ( had to swap my ej25 due to that very reason).

Whatever steps you take now, maybe get some help before you make it worse.

[Morgan]

 get some help 

 

+11

[aekOne]

^ I concur

If I'm reading this correctly the engine was run with no coolant for sometime?

[cameron]

not sure if real or trolling

[RX25SE]

If I'm reading this correctly the engine was run with no coolant for sometime?

 

This is how I understand it...

 

 

 

 

 

As running it without coolant till the fans turn on is very bad for the car..as without coolant in the system the temp sensor will not read right

 

Yep.

The coolant temp sensor is just that, temp of coolant. It will not read (shows cold on instrument cluster) as it will not work without coolant surrounding it so there is a risk the engine was stinking hot, but showing cold on the cluster.

 

 

 

 

you have been running the motor with no water in the cooling system...you might have cooked the motor

 

I feel a blown head gasket coming on......