drainage plug / bung things

[jimmy156]

Hello all,

Took our 207 to car cleaning / valeting place after it flooded due to the drainage being blocked where the water drains of the windscreen into a channel under the bonnet.

The chap has removed these two rubber bungs that fit into the drainage holes and are supposed to let the water drain through, but where they have got old and perished a bit, they were very easily and quickly get bunged up with gunk.

He advised not to replace them and leave as it. My gut feeling is that they were probably there for a reason, and that i should try and source a replacement. Any thoughts?

pic below:

[Mexman]

I would replace them after cleaning them and cut off those flappy bits at the bottom to stop them blocking again

[jimmy156]

The chap chucked them as they were perished and not doing the job properly, i can't imagine they would be expensive to buy if i can figure out what to ask for though!

[GreenV8S]

Aren't they valves keeping fumes from the engine bay out of the cabin fresh air intake? I think you'll want to replace those.

[jimmy156]

I hope not! They are just rubber plugs things that go into the drainage bit below the windscreen, not sure how they would keep the fumes out as you suggest?

ETA: as you can see, they are wedge slightly open, so not sure they would ever have created a good enough seal to stop gases going through

[GreenV8S]

jimmy156 said:

I hope not! They are just rubber plugs things that go into the drainage bit below the windscreen, not sure how they would keep the fumes out as you suggest?

ETA: as you can see, they are wedge slightly open, so not sure they would ever have created a good enough seal to stop gases going through

The 'drainage bit' in front of the windscreen is usually where the cabin ventilation system draws fresh air from - that's why it is there. It's open to the elements so rain can get in. They're normally fitted with a drain to let that escape - without the drain, any rain getting in here would end up in your heater system. The drain usually discharges into the engine bay, which is full of nasty fumes you don't want in the cabin. The drain usually incorporates some sort of one-way flap to let water seep out without letting (much) of those fumes in. If it's perished, it may not be doing that very well.

[steveo3002]

guessing they trap leaves a bit that would otherwise collect at the drain point , if its a car you care about find out where it drains and rinse it with hose once a year to flush out any rubbish thats collected and could be a rust trap

no it wont let fumes into the car

[Oilchange]

Every car I’ve had i removed stuff like thus as it clogs and attracts puddles of leafy gunge. This, of course, makes the car rust in places that can’t be repaired. Strange that!