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Old 30th September 2020, 00:12   #441
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Quote:
Originally Posted by FrattonEnder View Post
Finally got around to clearing out the plenum drain tubes on my ZT mk2 at the weekend - what a state they were in!


A few observations from me.

Quote:
1 - not sure the spyhole mod will work on the diesels, as one of the three cable bundles runs right in the line of sight between the hole and the drain tube.
I'm thinking about using a length of plastic piping (drilled to allow drainage) to aid access from the spyhole.
2 - the drain hole beneath the servo can be clean from on top, rather than rummaging around in the undercarriage. I used a flexi aerial from my old 400, shoved that in the hole (blunted end first) and then slid the spiral pipe bender over the top. Job done!


I now have a very clean and shiny plenum, which hopefully will stay that way. I've taken a leaf (pun intended!) from my Mondeo and fitted aluminium mesh (Isopon) behing the grills as well as the fix everyone else is doing at the wiper mechanism end.



Another thing, which is a bit of an aside. Changed the pollen filter while I was in there as it looked like it hadn't been changed for about a decade. Miraculously today, the temperature gauge hit midway for the first time since I've owned her (Feb this year). It this a bit of a coincidence or could it be related? Wondered if the blocked filter could have been contributing somehow. I've got the new in-line thermostat from DMGRS to fit at some point to go belt & braces, so that job can be shelved until the spring.
Hi Mike.

Have no doubt the spyhole will work on the diesel use one of these below.

1

2

3

4

5

6

These are the drain tubes from the inner wings, cut the lower plenum tubes of the same from under the car
7

8

9

also add some netting to stop the debris.
10

11

You could also use some fish tank filter.
12

13
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Old 30th September 2020, 07:19   #442
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Quote:
Originally Posted by Arctic View Post
Jules you are in lockdown again from Thursday i am told by my Daughter whom lives in Conwy, so it will be at least six months before anyone will get into Wales i bet.
Yeah mad times.
However I've still got plenty of local owners who need MOT work which is allowed !

Even if no more cars set foot here for a while it would give me a chance to catch up on restoring my own stock of 75's which have been waiting for a number of years, so still plenty to do
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Newbies do now!!
1. Plenum drains..all 3 or 4 year dependent
2. Cooling fan..All speeds functioning
3. Bonnet cable divider block
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Old 30th September 2020, 12:36   #443
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Thanks for the extra pics Arctic. Will have to have a play around with those drain tubes when the weather perks up again. I think my tubes may have been trimmed already as I ran an inspection camera down to see what they were like. No real sign of the flattened end, just a gentle taper down to probably a 8-10 mm opening.



I'm guessing the drain hole in the inner wing on the passenger side is supposed to have a tube fitted. Mine hasn't, so I'd better get that sorted.

Last edited by FrattonEnder; 30th September 2020 at 12:49..
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Old 30th September 2020, 12:58   #444
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With the drains trimmed the outlets are more like 20mm dia
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1. Plenum drains..all 3 or 4 year dependent
2. Cooling fan..All speeds functioning
3. Bonnet cable divider block
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Old 21st May 2021, 16:21   #445
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Thanks for this guys. Mine was pretty clean to be fair with no sign of water pooling but the drain hole was properly caked with dirt, a quick rodding and a hoover and all's well and good again. I didn't do the mod as it took me so little time to dismantle it to be fair but thanks nonetheless.
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Old 10th July 2021, 16:29   #446
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Thanks for this guys. Mine was pretty clean to be fair with no sign of water pooling but the drain hole was properly caked with dirt, a quick rodding and a hoover and all's well and good again. I didn't do the mod as it took me so little time to dismantle it to be fair but thanks nonetheless.
The mod is very quick and easy to do. Worth it for next time.----
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Old 2nd October 2021, 11:22   #447
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Default Plenum Season Started.

Once again plenum season is upon us, rain, leaves, wind, dust etc, so make sure you keep leaf debris to a minimum, rod at least once a week, and add some fish tank sponges, or netting to both sides of the outer wing.

1

2

3

4

5

6

7

8

9

Cut the ends of the plenum tubs under the car and in the wing area.

use some pliers to pull out the tube.
10

11

If the end as not been cut off do so now.
12

clean area and replace.
13

14

15

Also do the spyhole mod if you do not have it done.
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Old 29th December 2021, 01:32   #448
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are we all checking the plenums over the festive season, if not please do so.
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Old 30th January 2022, 13:31   #449
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I know i am repeating myself but with the storms coming up, don't forget to check those plenums, did mine today along with all the fluid checks and tyre checks

Plenums we hear so much about them and the reason why is very clear below in the photo's that follow.

And even more important this time of year with the Autum leaf fall etc.


Yesterday a member of the club Mike came to have his handbrake mod fitted, as i always do i checked the plenum's after asking if he had checked them it turned out he had only brought the car Sunday so the car was very new to him, he had looked at the plenums from the drivers side and could see some water and he also heard the sloshing sound when driving.

The results can be seen below so come on gents lets keep on top of these plenums do the spyhole mod and its only takes 2 minutes to check for water once applied.

Pic 1 water at least 3" deep
1

Pic 2 The water must have been deeper at some stage according the the pollen filter marks
2

Pic 3 starting to rod the plenum tube to clear the soggy leaves and dirt which as bunged up the lower tube
3

Pics 4 the water starts to flush out of the plenum this went on for at least 2 mins
4

Pic 5 Still pouring out strong
5

Pic 6 slowly stopping with the rain we have been having this so easly could have been worse ECU damage which would have been a crying shame as this MGZT as only 20000 mile on the clock.
6

Pic 7 All the water drained away this should not happen again as the spyhole mod was put in place and Mike shown how to rod them each week at the same time as checking his oil water etc.
7

So lets get checking the plenums right away there is no excuse not to, all the best Arctic.
http://www.youtube.com/watch?v=JwAj8...wzWShpKlaa5H9g

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This is how you can check your plenums if you have never checked them before this is mainly for new members that is why i have put this thread together so it is all in one place on how to check and also add the spyhole mod & leaf stopper/collector if you so wish, in my opinion worth doing.

This is the windscreen scuttle panel/outer grille which will have to be removed to start checking the plenum for water ingress below Fig1
1

First peel off the weatherstrip up to the wiper fixing point at least Fig2
2

Now you can press in the plastic spring clips to remove the grille panel Fig 3
3

This will then allow you to remove it and store it safe for the time being Fig 4
4

Next step is to remove the front screw/clip sometimes you may have to prise this up if it will not screw out.Fig 5/6
5

Now removed put this safe also
6

Next prise up and remove the rear scuttle clips hold your finger over the top because these can fly off sometimes never to be found again Fig7/8
7

8

Remove the first three of these and again put them safe for re-fitting after Fig 9/10
9

10

This will now allow you to lift the front of the scuttle and get access to the shield panel tray which needs to be removed. Fig 11
11

You can grip and remove the shield panel tray and slid it carefully out from its recess Fig 12/13
12

13

This now exposes the lower plenum and pollen filter area this is also where the ECU resides and can get damaged if water is allowed to build up because of the blocked plenum tube Fig 14
14

Here you can see how i have rodded the tube with my choice of rodding tools a plumbers spring pipe bender 10mm or 15mm also note even though i check these every week that because of the deluge of rain we have had this year and month water is still getting to a certain height from the line seen on the pollen filter, this was empty when i took these photo's but must be filling even though clear because of shear volume of water Fig 15
15

This shows the rodding tool i use pipe bender with a boot lace and plastic tube the reason why will be seen later in the thread. Fig 16
16

The shield panel tray can now be re-fitted back into place Fig 17/18
17

18

This photo shows the spyhole mod so the plenum cab be checked and rodded in the future with out having to remove the scuttle clips and trays. Fig 19
19

Here you can see the rodding tool again in use showing why the lace and plastic tube is needed because the plenum is at least 24" deep Fig 20/21
20

21

Here you can how the spring as come all the way through the plenum and the tube until it reaches the ground under the car Fig 22
22

Once rodded and if you have the spyhole mod in place fit a rubber 25mm bung which can be easily removed rodding in the future Fig 23
23

Replace the front screw clip Fig 24
24

Replace the three scuttle back clips Fig 25/26
25

26

Next replace the rubber weatherstrip Fig 27
27

And last of all with the job finished refit the windscreen grille panel Fig 28/29
28

29

The plumber spring i use with lace and plastci tube attached for the extra length needed to get to the bottom of the plenum 10mm or 15mm obtained from Toolstation, Screwfix, B&Q etc Fig 30
30
http://www.youtube.com/watch?v=qCTc1...wzWShpKlaa5H9g

Roding the plenum
http://youtu.be/9Hw2SMBPU48


------------------------------------------------------------------------------------------------------------------------------------------------------------------
Spyhole Mod Continued At Post 21 Click the Link
https://www.the75andztclub.co.uk/for...1&postcount=21
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Old 10th March 2022, 20:30   #450
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Can anyone advise please what to do to remedy a pool of water in the rear passenger side foot well? Rover 75 saloon 1999.
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