Those of you who have had a boot full of water in your p38,may be interested in this if you haven't found where its coming from !
Mine filled up this weekend because the rear n/side sunroof drain blocked up where it exits below the rear wheel arch
To get to it i folded the nearside rear seat down,lifted out the parcel shelf,then the tray it sits on above subwoofer,undone the lower seatbelt bolt(19mm)and took the arch panel out.
Then you can see the yellow'ish drain tube coming down next to the top seat belt retractor,and going into a larger black rubber tube.Which is where the water was coming out of and into the spare wheel well.
(In pic2 you can see i pulled the yellow'ish pipe out in order to clear the blockage. Airline was also used to blow back up said yellow tube towards sunroof just to be sure !)
As you can see from the photo's i rigged up a copper tube and a bit of clear tubing to attach to my air line,which i then blew the obstruction out with.
And before anyone says ''you dont have to do all that'',this is just how i decided to do it
These photo's may help someone who has never done this before i hope

Andyp38 said:

Those of you who have had a boot full of water in your p38,may be interested in this if you haven't found where its coming from !
Mine filled up this weekend because the rear n/side sunroof drain blocked up where it exits below the rear wheel arch
To get to it i folded the nearside rear seat down,lifted out the parcel shelf,then the tray it sits on above subwoofer,undone the lower seatbelt bolt(19mm)and took the arch panel out.
Then you can see the yellow'ish drain tube coming down next to the top seat belt retractor,and going into a larger black rubber tube.Which is where the water was coming out of and into the spare wheel well.
(In pic2 you can see i pulled the yellow'ish pipe out in order to clear the blockage. Airline was also used to blow back up said yellow tube towards sunroof just to be sure !)
As you can see from the photo's i rigged up a copper tube and a bit of clear tubing to attach to my air line,which i then blew the obstruction out with.
And before anyone says ''you dont have to do all that'',this is just how i decided to do it
These photo's may help someone who has never done this before i hope

Click to expand...

What year is yours??

I always thought there was only 2 drains on the sunroof, the two front corners which drain down the A Pillars and exit just in fron of the front doors.....

Its a 97 on a P plate,and theres definitely 2 on this model.
The drain on the rear off side was clear, i did that one first.

Well I never knew that.....

Just goes to show everyday is a school day..!!

This is next on my jobs-to-do list......

Interesting, I found these a week or so ago and cleaned them out too.

JamesBB said:

Interesting, I found these a week or so ago and cleaned them out too.

Click to expand...

me too,but mine had separated from the black boot and not blocked i put a blob of silicone on each one and pushed them back together to stop it happening again

Did this today and worked a treat, sealed them with some instant gasket and whipped some cable ties around the boots to make sure.

y do you seal it , blow it with compress air once a year and it done ;;