Help!!! Have i got an airlock

[Quanger]

Car: 325i
Hi, Drained and flushed my cooling system there today. But there must be an air lock in system somewhere, I mixed 2 liters of coolant and 2 liters of water in a measuring jug. all the system would take to fill it up was 4 liters sure this cant be right? Please help?

[siddiqi1]

had a look here?

Click here

hope this helps. Mine was a right pain in the rear end to bleed; kept spitting water back out; toom the mech good 15mins to bleed the air!!

[Quanger]

8.Pour the coolant into the header tank (located on RHS next to wing) SLOWLY and give it time to settle. (should take about 4.5l to get to cold level marker)

I thought that the cooling system took 10.5 liters.

[Quanger]

I started the car this morning it took about 5 mins for warn air to come out of the fans, then i opened the bleed screw and a steady flow of coolant came out. Does this sound right with just 4 liters of coolant in the system?

[Quanger]

Could someone please confirm how many liters of coolant the system takes to fill? thanks

[leeparkes]

try jacking front of the car,or use ramps
then bleed!
when you flushed did you drain the engine block(that carrys a lot of coolant)
they say its capacity is 10.5 litres but thats with the system completely dry (block/heater matrix etc)
i had the same problem with my 320,brought 5litres of anti freeze mixed it 50/50 in a big container
and only used half of it,if your getting heat through the blower and car doesnt overheat i wouldnt worry,
but do keep an eye on it for while to be sure!!!!

[Quanger]

Thanks mate for the quick reply i was starting to get paranoid. Will give that ago just to be on the safe side. cheers

[Brianmoooore]

If you drained the coolant by draining the radiator, then you drained little more than the header tank and the rad!
The block would still be full of old coolant.
Simplest way to change the coolant is to drain the radiator as you did, then thoroughly flush out the block with clean water from a hose. Then refill with five litres of neat antifreeze (if you want 50% strength) into the header tank, and top up with clean water. Any further topping up, after bleeding the system, should be done with 50% mix, of course.