Coolant issue magically fixed - any ideas?

[Jim_rx7]

Ok, ever since my rebuild I\'ve had to put coolant in everytime I drive the car.

Basically drive the car, park it up, next day more coolant put in due to buzzer going off.

I was also getting coolant overflowing from the expansion bottle when stopped. Obviously coolant I was putting in was going there.

Was curious as to what was going on with the coolant. Car started fine, hot or cold with no issues. No champagne bubbles when cap off starting the car cold. Also the rad pipe did not go hard shortly after starting the car.

I bought a block tester, but couldn\'t get it to work as it was simply sucking coolant into the tester no matter how much I took out the system!! DOH! lol.

I thought sod it and I was going to take it to a specialist to get a definate - is the car broken yes or no answer. lol.

I left the car with a little less coolant in it compared with normal - a good few inches down.

Then today I started the car - no coolant buzzer, car upto temp as norm etc and no coolant over flowing from the expansion bottle.


My theory....

a) I was putting too much coolant in? I\'ve heard if you overfill it will throw out too much coolant? I did fill the filler neck more or less to the brim each time I added coolant to it. (which was daily)

b) possibly trapped air or an air block and running the car with the car upto temp and the filler neck cap off got rid of this?


Anyway.... it now seems ok. What\'s your thoughts?

[nikp]

I would theorise both a and b. I have found that topping coolant up and take a few goes to get the coolant buzzer to stop going off. Not overfilling it to start with helps.

[rx jamie]

c) coolant buzzer is now broke

[nikp]

c) coolant buzzer is now broke

Unlikely: it\'d be on all the time then, unless is earthed itself against the engine body, but then you\'d get random buzzer going off.

[m4drx]

all the rx7\'s ive ever come across do this after a quick coolant change.

it normally takes topping up 5-14 mornings and then not until the next change. nothing is wrong....simply welcome to the living thing which is the rx7

[rx jamie]

Unlikely: it\'d be on all the time then, unless is earthed itself against the engine body, but then you\'d get random buzzer going off.

i was just being scarcastic nik lol

[Jim_rx7]

all the rx7\'s ive ever come across do this after a quick coolant change.

it normally takes topping up 5-14 mornings and then not until the next change. nothing is wrong....simply welcome to the living thing which is the rx7

Yeah, I\'ve had it out a few times since with no coolant issues.


All good!!