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So i think ive bled it :/

C

charlesm17x

New member
Had issues with my 85 944 2.5 8v lux overheating, only just bought the beauty and she is booked in for a major service in when i come back of my holidays in September but as i have one last chance to drive her before i go away although be it to work i thought i might have a bash at bleeding the coolant for peace of mind.

Here is what i did.
Open Expansion cap (No way to really tell the level because of how yellow the tank is and it seems quite dirty inside.
open bleed screw
fill tank till only coolant comes out the bleed screw
replace cap and tighten bleed screw
allow engine to warm up Fans come on the go off.
kill engine
open bleed screw until only coolant comes out
repeat
and then when engine is fully cold i.e tomorrow morning check fluid level on tank and refill if necessary

i had a lot of air come out while bleeding and now the engine seems to run cooler and doesn't get as hot and cools down quicker when fans come on. Am i right in thinking is good to take a socket with me tomorrow and do another bleed tomorrow when i get to work and obviously keep and keen eye on the engine temp.

Something to note! Lots of rags around the bleed screw is a must had liquid go into the cyl #1 spark plug well was interesting to see her run on 3 cyl sounded like a scooby.

Main questions i have are. Does the above sound right? have i done is correctly? (Car was on slope) and secondly is it possible to overfill the coolant or do all cars have overflow pipes? (Tank was dry when i started filling :( )
 
Basically sound.

Try to get the nearside front highest and have heater on full (not necessarily the fans), and yes I'd take a 12mm, I always expect to bleed 3 times.
 
Agree with Mike-if you use a ring spanner instead of a socket-you can see better when the fluid starts to bubble out-you only need to crack the screw open slightly to get rid of air when engine hot.
 
Iv always turn the heater to full heat. Cap off turn engine on open the bolt slightly and let it run to temp keeping eye on the level, which u say is hard and top up if needed. Once there's a bubble free stream do back up the bleed screw. After a few drives slightly open the bleed screw with engine off air should just come out. You should then be able to open head tank cap without coolest over flowing
 
Yeah it is hard to see i will at some point over the coming months replace Pump,Stat,Sensor,switch,rad,tank,hoses as i plan on keeping this car for a very long time but for the interim period its annoying shining my led torch next to and under the tank to see where the green liquid is sitting.

Ill post again tonight after im back from work and let you all know how i got on.
 
With the pressure cap off,if the coolant is visible in the opening & about 25mm below.then on my 924S,the coolant is usually at the max mark-if you overfill,then one of those £1.50 Draper squeeze suction pumps allows you to adjust the level-probably the best £1 's worth(when I bought mine) I've got.
Also,I use the red/pink antifreeze which shows up quite well even in my 27 yr plastic header tank.
 
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