Drain and replace coolant?

[RichMcc]

Anyone know what the process is to drain and replace the coolant in a ph-quick? I wanna fit my samco's

Is it as simple as un-clip the lowest hose and drain, then reconnect and refill? How do you deal with any air in the system? Is there any special process to follow?

 

[makavelli]

i need to do this soon as well
i know how to do it, just dont know how to explain it in typing very well lol

 

[RichMcc]

push keys... make words! LOL

 

[davebem]

Ive done my 1.2 and need to do my 172 soon. First of all when engine is cold remove filler cap, need to bleed it by disconnecting the lower hose from the radiator and the bleed screw on the plenun chamber. Bleed out all fluid. (at this point you could flush radiator out with hose pipe through the top rad pipe), put the lower rad hose back on but not the bleed screw. Then refil via the expansion bottle upto the max mark until it runs from the screw, then close the screw, then run the engine until its warm making sure it doesnt go below the min mark while topping up coolant . Now stop the engine and put the cap back on the expansion bottle.

 

[RichMcc]

Cheers man I'll have a bash tomorrow when it comes back from the garage.. Dont want them to do it they'll mess up my engine bay and get oil and grease all over the new hoses... damn grease monkeys!

 

[makavelli]

Ive done my 1.2 and need to do my 172 soon. First of all when engine is cold remove filler cap, need to bleed it by disconnecting the lower hose from the radiator and the bleed screw on the plenun chamber. Bleed out all fluid. (at this point you could flush radiator out with hose pipe through the top rad pipe), put the lower rad hose back on but not the bleed screw. Then refil via the expansion bottle upto the max mark until it runs from the screw, then close the screw, then run the engine until its warm making sure it doesnt go below the min mark while topping up coolant . Now stop the engine and put the cap back on the expansion bottle.

thats what i was gonna say

 

[ditz]

sometimes it can be a bit of a mare getting all the air out of the system, you need to keep an eye on the level when its running up and also leave the bleed screw off the thermostat housing on the head, you dont want to run the head dry

 

[RichMcc]

No more of a mare than fitting the samco's in the first place lol!

 

[makavelli]

i did mine today rich

was actually a piece of p*ss to do it took literally half an hour to fit the 2 samcos which i got off tim

andy

 

[CHRISK172+]

i did mine today rich

was actually a piece of p*ss to do it took literally half an hour to fit the 2 samcos which i got off tim

andy

My next job too.....thx Tim