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Hey Kitty,
Pardon my butting in here, but that is really a treat to see that 1989 LHD B19E-powered 245 in what was once my favorite 240 color, which we rarely saw here!
I can't help with the destination of that loose hose -- can't see in there as well as I'd like -- but we can see the brake booster connection, and we know there are at least three other uses for k-jet manifold vacuum with different porting: The PCV (or flame trap), the cabin climate control pneumatic valves, if equipped with the Combination Unit system, and the vacuum advance for the distributor which uses Bosch TZ28H ignition.
My suspicion is this car has the Standard Unit (heater only) so there's no vacuum hose headed through the firewall. I don't see any AC hoses.
If you have any green book wiring diagram manual, such as 1989 to 1993, you have the maps for the CI injection and TZ ignition, or if you have the Bentley manual, you have this too.
You're right to say the k-jet fueled motor will not run well at all with a vacuum leak like what appears as the disconnected hose. I'd suggest pinching or plugging it to test that, even before discovering what it broke off of.
One thing I can only guess at, and can't say for sure, is the reason for the sub-2K displacement is based in the way motor vehicles are taxed in this market.
--
Art Benstein near Baltimore
The older I get the faster I was.
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