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bleeding cooling system, 8v & 16v petrol engines
Published by dave
24-10-2005
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bleeding cooling system, 8v & 16v petrol engines

A Punto has two bleed screws: One on the top of the radiator and one at the back of the engine on the heater hose.
  • Undo both screws
  • Fill header tank right to the top
  • Squeeze all the hoses
  • Keep repeating this until a fair amount of coolant is coming out of both bleed screws
  • Do up the back one
  • Keep squeezing hoses so coolant keeps coming out of the radiator bleed screw until the coolant is at max
  • Do up screw
  • Replace radiator cap
  • Run engine until fan comes on
  • Let it cool for a couple of hours
  • Finally, check the level and top up to max if needed.
Thanks benny279, homeward, chrispyrice, Johnno260, grahampunto and 7 others thanked for this post
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Old 20-09-2006   #1
turboo
 
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Re: how to bleed a mk1 punto cooling system

you not got no photos?
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Old 20-09-2006   #2
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Re: how to bleed a mk1 punto cooling system

if you need photos for this, then best let a pro do it
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Old 21-05-2007   #3
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Re: how to bleed a mk1 punto cooling system

Is this the same for a mk2 punto??
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Old 21-05-2007   #4
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Re: how to bleed a mk1 punto cooling system

more or less yes but nipples be other end of rad
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Old 10-10-2007   #5
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Thumbs up Re: how to bleed a mk1 punto cooling system

thanks for this pal very helpful cheers
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Old 30-10-2007   #6
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Re: how to bleed a mk1 punto cooling system

but it's all wrong

any wonder so many puntos are overheating
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Old 30-10-2007   #7
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Re: how to bleed a mk1 punto cooling system

Quote Originally Posted by littlepip17 View Post
but it's all wrong

any wonder so many puntos are overheating
its all totaly the best way, seems the ones that have dealer history are the ones that blow gaskets
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Old 30-10-2007   #8
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Re: how to bleed a mk1 punto cooling system

Quote Originally Posted by dave View Post
its all totaly the best way, seems the ones that have dealer history are the ones that blow gaskets
well i top up the reservoir open the rad screw till it comes out then shut

then open rear bleeder get someone to blow on bottle or use a pressure tester to the same affect

then shut when i come out

as the rear bleeder is higher than the bottle it will always allow air in unless you pressure it out then close it don't matter what kind of pipe squeezing you do you run the risk of having air in the block

after this obviously you should run the engine till warm allow to cool and top up the last bit

when i do it my way i never have to top it up afterwards
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Old 30-10-2007   #9
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Re: how to bleed a mk1 punto cooling system

Fill header tank right to the top not the max mark
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Old 30-10-2007   #10
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Re: how to bleed a mk1 punto cooling system

Quote Originally Posted by dave View Post
Fill header tank right to the top not the max mark
why thats expansion space

actually i fill mine right to the plastic join between the 2halfs of the tank itgives a better idea of water level

not that i need it i have never topped mine up in 1 year just about time to change it actually
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Old 30-10-2007   #11
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Re: how to bleed a mk1 punto cooling system

until the air is out, then you let it fall to max via rad bleed screw
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Old 31-10-2007   #12
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Re: how to bleed a mk1 punto cooling system

Quote Originally Posted by dave View Post
until the air is out, then you let it fall to max via rad bleed screw
o right see what you mean i do actully if you let it drop you have to bleed the rad again

i bleed the rad first then open the rear bleeder and pressure till it drops to max

i suppose it don't really matter witch way round you do it


i just figure if the rads bleed first you don't push any more air into the engine
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Old 31-10-2007   #13
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Re: how to bleed a mk1 punto cooling system

had the camera out before so took a few pictures to help people


rear bleeder

rad bleeder

bottle min max marks

max is actually the join between the 2 halves of the bottle
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Old 01-02-2008   #14
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Re: how to bleed a mk1 punto cooling system

Quote Originally Posted by beau View Post
you not got no photos?
Any idea how to drain the cooling system.

Thanks Richard
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