I sent this to an expert but am open to all tips and solutions from
"I really need your help!
Since you replaced all your lines Im hoping you can tell me where the
blue and clear vaccum tube is to be connected.
My mechanic broke two tubes, the red and clear (which I am hoping I can
reconnect to the throttle body just behind the distributor with very
long needle nose pliers) and the blue and clear tube that I have no
idea where it goes.
the blue and clear tube is connected to some sort of valve in the front
driver side of the engine compartment, meets and is then twist tied to
the red and clear tube,
About a foot of the blue and clear tube broke off and the rubber
connector came with it. It now rests near the distributor under the
I have spent much time looking for a nipple and scanning diagrams to no
The car is due for smog and I can't afford the mechanic at mercedes.
I don't know if this will affect smog but I do know the car idles
poorly since these have been broken.
(mechanic connected both broken lines together and it was like riding a
ANY tips you could offer would be much appreciated. The red and clear
tube looks like you should really remove the distributor to get at and
I need to avoid that by all means.
I would be happy to send you photos if that would help, My car is a
1977 SLC but i believe this should be the same configuration as yours.
Please respond. I havn't had much luck here.
Dr. Chip Abbadessa wrote:
"the car idles poorly since these have been broken"
One or the other probably connects to the intake manifold - its leak is
making the motor idle poorly - it will never pass the smog test this way
- excessive HC due to too lean a mixture and misfiring on that account.
Carefully look at the intake manifold and throttle area for a connection
Suggest you investigate ignition distributor's vacuum connections.
That your "mechanic" screws it up and says "here," YOU figure it out is
unconscionable. I'd report him to your state's licensing board.
Your tip made it seem obvious. I CAREFULLY re-checked the service
manual and found what should have been a Y connector had been broken in
two and half of it reinstalled holding the remaining hose.
All that time looking for an empty connection, It never would have
dawned on me that one of the connections was to be shared.
Now timing and off to smog.
Thanks to you I have faith!
Take A Guess wrote:
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