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Old 21-08-19, 04:10 PM   #1
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Default Coolant leak, missing plug?

Evening all,

Fraid i'm not much of a gear head though doing my best a la google to learn. Have the case of a mysterious coolant leak from underneath the 207 s (2006). Finally managed to catch it in the act and have this gloriously helpful picture.

Feels to me like this hole should probably have something in it, as it has a thread? Am I correct or am I about to do something horrible?

imgur.com/0RbxPVn
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Old 21-08-19, 05:15 PM   #2
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Cant really make out where that is on the car. it looks like it may just be the back of a threaded hole, if its gearbox end of the car is more likely the thermostat housing is leaking (a common fault)
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Old 23-08-19, 11:52 AM   #3
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Cant really make out where that is on the car. it looks like it may just be the back of a threaded hole, if its gearbox end of the car is more likely the thermostat housing is leaking (a common fault)
Thanks for the input,

Had a further dig under the car, if it's helpful i'm fairly certain the actual drip is closer to dead centre of the vehicle, underneath the Cylinder block. Looked around the pump and seems fairly free from trouble. This is perhaps 9"-12" toward the centre of the vehicle from the pump.

Totally novice question but does the engine have a coolant drain plug in that area? - Feels that the hole is threaded though perhaps that's wishful thinking, perhaps more likely it's just an outlet?

Many thanks.
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Old 23-08-19, 12:41 PM   #4
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Are you sure it's not condensation from the Aircon? It's normal to have water dripping from under the car when the A/C is used, it's just condensation.
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Old 23-08-19, 01:00 PM   #5
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Are you sure it's not condensation from the Aircon? It's normal to have water dripping from under the car when the A/C is used, it's just condensation.
It's bright red and I got a nice puddle of it under the engine currently

Very consistent too, seems to empty a drop every 15-30 seconds from this little hole (approx diam 1.5cm)

Right now just trying to decide between assuming it's something leaking internally - and trying some Kseal (priorities aren't long term survival) or sticking it in a garage.

Just wanted to check as the hole / gap it's coming out of looks to me at least like it's ideal for some sorta plug - but as I know nothing about cars i'm assuming it's perhaps there intentionally as an outlet
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Old 23-08-19, 01:30 PM   #6
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It's bright red and I got a nice puddle of it under the engine currently

Very consistent too, seems to empty a drop every 15-30 seconds from this little hole (approx diam 1.5cm)

Right now just trying to decide between assuming it's something leaking internally - and trying some Kseal (priorities aren't long term survival) or sticking it in a garage.

Just wanted to check as the hole / gap it's coming out of looks to me at least like it's ideal for some sorta plug - but as I know nothing about cars i'm assuming it's perhaps there intentionally as an outlet
Ah okay, I didn't realise it was red, I thought it was just clear water. It certainly sounds like a coolant leak then. Sorry I can't be any more helpful.
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Old 26-08-19, 01:45 PM   #7
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Firsty download the tapatalk app. Then you can directly post pictures from it to this forum easily. No idea what that hole is. No clue where the picture was taken or if its upside down or what i am looking at. You have to take a few clear pictures.


There are 2 bleed screws to let air out the system. One on the firewall (black plastic), one on the plastic thermostat housing. On mine its made from blue abs plastic. Check and tighten these. These are the only 'holes' in the system. They are about 1.5cm long (not wide) with a screwthread.

Ultimately, You have to properly trace where its coming from. You can top up for a few weeks with tap water no problem in this heat especially in a soft water area.

There are only a few places the coolant can leak from if you don't have a cracked engine block. Mainly the thermostat gasket, a failing water pump, the hoses and connectors, the radiator. The 2 bleed screws and that's it.

I would stick newspaper around the places you think its coming from and work upwards. That 'hole' seems merely to be a collection point for water.leaking elsewhere.

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Last edited by muscleriot; 26-08-19 at 02:18 PM.
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