The 75 and ZT Owners Club Forums - View Single Post - Plenum Check - The Reason Why **ALL OWNERS PLEASE NOTE**

GIBSON · 23rd August 2020, 17:08

Hi Arctic,

Just finished a plenum check was nice and dry this time. (On the contrary to the previous check when the drain was blocked..)

I noticed however that the inner drain tubes are missing on both sides of my car. Should I be worried about this and consider getting some new or used ones?

Reason I noticed is because I am currently replacing the driverside SRS sensor underneath the carpet of my 75. (Mine is a LHD model.) Sensor was completely corroded and the foam underneath the carpet was wet. So I started looking for the source of water ingress.
While taking the old sensor out I noticed the "flooring" (looks like some kind of glued on plastic?) had some signs of superficial cracking and a hole at the rear seat area. Sealed the hole up with some silicone sealant and treated the entire flooring surface with liquid rubber just to make sure...

However I'm not convinced the flooring was the main source of water.. (I noticed after a rainfall water was coming from the front of the car downwards to the rear. I say downwards because my car is parked on a slope with the front of the car being on the high side.)

Whilst looking around on this nice forum I noticed the scuttle plugs could be the culprit as well, so I went ahead and sealed around them with some sealant just to be sure. Seeing the inner drain tubes mentioned here I wonder if these could have anything to do with my issue?
Maybe you have any other tips?

Thanks in advance!

23rd August 2020, 17:08	#427
GIBSON Newbie Rover 75 Saloon Join Date: Dec 2019 Location: Zedelgem Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post	Hi Arctic, Just finished a plenum check was nice and dry this time. (On the contrary to the previous check when the drain was blocked..) I noticed however that the inner drain tubes are missing on both sides of my car. Should I be worried about this and consider getting some new or used ones? Reason I noticed is because I am currently replacing the driverside SRS sensor underneath the carpet of my 75. (Mine is a LHD model.) Sensor was completely corroded and the foam underneath the carpet was wet. So I started looking for the source of water ingress. While taking the old sensor out I noticed the "flooring" (looks like some kind of glued on plastic?) had some signs of superficial cracking and a hole at the rear seat area. Sealed the hole up with some silicone sealant and treated the entire flooring surface with liquid rubber just to make sure... However I'm not convinced the flooring was the main source of water.. (I noticed after a rainfall water was coming from the front of the car downwards to the rear. I say downwards because my car is parked on a slope with the front of the car being on the high side.) Whilst looking around on this nice forum I noticed the scuttle plugs could be the culprit as well, so I went ahead and sealed around them with some sealant just to be sure. Seeing the inner drain tubes mentioned here I wonder if these could have anything to do with my issue? Maybe you have any other tips? Thanks in advance!