Quote:
Originally Posted by FrattonEnder
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.
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.
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You've still got to get underneath to trim the flat ends off the plenum drains if they have not already been done.
Also the temp gauge reads midscale between 74C and 116C by design.
I suspect your engine is running high 60's low 70's and stat well overdue a change.
Read about the dash diagnostics here and get an accurate engine temp reading.
It should reach 88C after 7 miles
http://www.the75andztclub.co.uk/foru...ad.php?t=55585