Jump to content
Do Not Sell My Personal Information

2007 1.3 KA coolant drain


Recommended Posts

As always, the bottom hose drains the rad off but what's an effective way to drain the block and heater matrix?

I like to purge the system of the old antifreeze but refilling!

Does the system self bleed the air out through the header tank with the engine running when refilling?



Link to comment
Share on other sites

  • 1 month later...

Attempted the job of antifreezing today but one of the thermostat housing spouts (heater matrix) is partly broken off so it needs a new housing.

Are these housings prone to breaking?   ... it wasn't me that broke it so curious if they are a weak part!



Link to comment
Share on other sites

Hi, yes the stat housing becomes very brittle after a while, better to change the whole unit out as they come complete with new stat and gasket with the housing.

I changed mine at the same time I changed the HCV as a matter of precaution, then back flushed the system with clean water before replacing the coolant, and yes it vents through the expansion tank but I always squeeze the hoses aswell just to help purge any trapped air.

Its a well known trait....

Link to comment
Share on other sites

Why do a lot of folk think dropping the bottom rad hose of is sufficient to clear the system of old coolant?

I've always taken the heater matrix pipes off, one at a time, and flushed through both ways with water. This helps flush the block out too,

I usually take the expansion bottle off as well and give that a good shake out with water in the sink.

You can actually do a coolant flush with the engine warm, provided you use hot water for flush and refill. The concentrate can be warmed in the microwave.



Link to comment
Share on other sites

  • 11 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...