Thread: Leak proofing - removing gutter plastic trim

Originally Posted by onebob

Look for rust at the bottom of the A pillar just above and behind the lower end of the A pillar trim - you need to be a contortionist to eyeball it - the phone camera is a help…. Zoom in on the pic.

Cheers mate. Will.do. Thanks

Trims can be ordered through MR Automotive in Redcliffe. New cowling from The Landy Nut. Cheers.
If you have windscreen issues get it covered through your car insurance policy … new one each year. Cheers

Some helpful hints to sorting out water leaks.
Causes
1. Blockage of A pillar drain - A pillar fills up and water exits the threaded hole below the wiring loom grommet - floor pan rusts see image 1 - A pillar, 2 - Screwdriver marking A pillar drain hole, and 3 - A pillar drain hole itself.
2. Loss of seal around the fresh intake surround(image 4) - remove plenum cover( LAND ROVER DISCOVERY 2 PLENUM AIR INTAKE MOULDING. PART- JAK000010PMALR) see this video from atlantic british on removing what they mistakenly call the "centre air intake moulding" Atlantic British Presents: Installing Center Air Intake Moulding - Discovery Series II - YouTube Then reseal both the fresh intake cowling and the wiper motor cover - in heavy tropical rain you can observe that the water level inside the intake plenum is very very high and almost breaches the lip of the fresh air intake - see image below. If parked nose down in torrential rain - then water would flood into the fresh air intake - see image 5 with marked plimsol lines.
3. Broken/cracked plenum cover overhead the fresh intake allowing water to drip into the fresh air intake.
4. The sill area around the A pillar drain is very prone to corrosion due to accumulation of mud etc - keep this area spotlessly clean and coat with tectl wax/lanoline coating etc when dry.
5. While you have the plenum air intake moulding off - clean all the dirt in the channel and inspect for cracking in the body sealant - see image attached. If so clean thoroughly, gouge out the crack area and reseal - otherwise your firewall will rust out - the death of many D1/D2 and RRC.

The image of the actual water level on the fresh intake cowl is not clear in the photo - but I flooded the plenum with a hose on lowish pressure which would be equivalent to some of the tropical storms we have here in queensland australia. The red lines mark the water level during this experiment. My hose pressure is already quite low and I could see how easy it would be to get a flood of water into the fresh air intake when the plenum is flooded and when the car is accelerating.

Thanks for that, a job I’ve been meaning to do but still haven’t, I like seeing what grows from the carpet on drivers side. It will get done this summer 🥃hopefully.
So pic 3 is drain that appears to point strait down, pic 2 looks like the screen driver is on the side, I’m thinking it’s just the picture or is the drain on the side?

Yes image 3 is the circular A pillar drain hole - often clogged and causes rust and water ingress to footwell.
First image with the screwdriver points to the tapered bottom of the A pillar just aft of the door hinges. Second image with the screw driver illustrates the hidden position of the A pillar drain hole how difficult it is to locate the drain hole.
Hope it helps - get onto yr leaks cause with the foam under the carpet staying wet and bit of salt from wet beach feet , you will lose a floor pan very quickly