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Vacuum leaks narowed down to 3 items, 1982 300D (Pictures)
Hi, everyone.
Well I've tested every darn thing I can for vacuum leaks on my 1982 300D.
I found two things that couldn't hold vacuum, and possibly a third item.
1. The Transmission Vacuum Shift Valve has a slow leak. I take it that it should be holding vacuum?
2. The transmission vacuum lever assembly will not hold vacuum and has a slow leak. The hoses you see in the picture below are hard, and extremely loose. I don't believe they are forming tight seals with the hard plastic. Is this assembly supposed to hold vacuum? (BTW, I replaced the little levers at the left of the assembly...that made a HUGE difference in the transmission shifting).
3. What looks like a green check valve will let you suck and blow air through it. Isn't it only supposed to allow air to be drawn out of it, but not let air into it? Do I have a faulty green check valve?
Thoughts?
Thanks,
Pete.
P.S. All the doors, the trunk, the reservoire, the vacuum pump, the shut-off, the brake booster, etc., hold vacuum.
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