Part 2
 

Killing time, fixing/rerouting some wiring, cleaning under hood, fixing-installing the never-worked-before `engine light`, then testing how nicely it works; I look down-->what do I see?
Picture #4. Yes, the rear hose, covered in greasy poo. Ugly?Yes. Dangerous? What?!=yes!! Hose in Bad cond?idk yet.
Searching for reasons, Thinking I`m in need of a new valve cover gasket, etc, checking inj.pump to see any leaks etc, I explored another issue that also helped my d24t getting all that oily crap on it....:) Pict #5.
Is that hose still available? How about our rear heater hose?
Thanks for commenting.

Lucky me I saw what`s happening.
 

Thanks for the advice. I was real lazy to try the dental floss solution, I still like it BUT hopefully I`ll never need it on the road!
While waiting for car to warm up& thermostat to open so I can get air` out (after installing my jerry-built hose junction) , I experienced that the direction of flow of Zerex is towards the ip/coldstart device, of course.:)
Thank you forumers for all of your ideas. I hope my posting helps other brickers dealing with d24/d24t issues, so we can save many for later generations. :)))
My before-and-after trip `hood-opening rituals` saved my @s$ again. And the car. Get out there and check things under hood.I mean, constantly. You have a 20+ y old BRiCK! :)))

Good work. Should be OK. Max coolant pressure is 75kPa (less than 11 PSI) if you're using the black expansion tank cap. Retighten the hose clamps when it is hot and you're good to go.

20 years old? I wish! You're off by about 15 years!:D

No d24t is `only 20y old` here :(
 

Yes, of course you`re absolutely right, but I thought, older ladies always like it when you `SET` their age at a bit lower. :)
THANKS.Yes, I have the black exp tank cap. I`ll retighten clamps once car gets up to temp. I need to wait for a while as PS pump is loose, belt is off currently...

for the holiday, f@t Santa Claus visited here and he surprised me with a new tb cover. :) F.ck, he was too fast to leave me a manifold; or maybe i haven`t recently been behaving well.
This stup.d DupliColor engine enamel dries so slowly! I can`t just grab cover (unless wanting to fingerprint it) to install rubber trim/seal/clips/plugs back, not to mention putting cover back on engine... But it does look funky on there. More pictures tomorrow.

Red
 

Spray can chased off ps pulley too :)
Paint`s good match to color code 173-2

Breather/vent hose part number
 

Talking about hoses again...
the one that runs from valve cover towards turbo... The d24t crankcase vent hose became very brittle, it cracked at both ends. After taking a pict, I got rid of it &installed a heater hose as a temp fix, `cause thanks to this crappy hose: the passenger side of engine always got oily mess on it... from underneath the upper clamp...oil escaped, travelled back by the side of valve cover, then down, reaching near rear belt, rear coolant hose etc, leaving oily residue on&around manifold etc.
I`m trying to find the correct part number so I`ll be able to order it. Any info where to order? THX
ps.
hose was put on plastic joint with metal piece being INSIDE the hose.
See picture #4 & #5 in posting #11.

Volvo P/N 1328650-5

From Volvo 740 parts catalog. 17MB download, but well worth it.

Groep 20 Motor; 25 Inlaatsystem, uitlaat; D24 Luchtfilter, page 215

Great info, nice find! Thanks a bunch.

just a quick update
 

Yes, I have the black one.

Since the fix I drove over 3000 miles and no issues.

The later mentioned `vent hose` (from valve cover towards turbo) deteriorated a lot, so I used a thick-wall heater hose to replace it, temporarily.