Flushing the Heater matrix

[Frogmella]

While I've got the inlet manifold and thermostat off the car it seems a good time to flush the heater matrix. I haven't noticed any problem with it but while I'm there...



I've never done it before.



My intention is to pour the radflush in through the top hose, leave it to do its thing (for how long?) and then simply flush it out with a hosepipe until it runs clear. Is that right?

[trikey]

I used kettle descaler when I did mine, then a good backflush with a hosepipe for ten mins.

If you can disconnect the feed and return pipe and fill from there it guarantees the matrix will fill rather than use the top hose.

[Frogmella]

Originally Posted by trikey

I used kettle descaler when I did mine, then a good backflush with a hosepipe for ten mins.

If you can disconnect the feed and return pipe and fill from there it guarantees the matrix will fill rather than use the top hose.

So the point is to flush it through from both directions, bottom and top hose?

[trikey]

Originally Posted by Frogmella

So the point is to flush it through from both directions, bottom and top hose?

Yes, that’s what I did.


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