Chris64
Full Access Member
- Joined
- Sep 16, 2024
- Posts
- 80
- Reaction score
- 110
- Location
- San Diego
- First Name
- Chris
- Truck Year
- 1974
- Truck Model
- K20
- Engine Size
- 350
OK - I finally took off the air cleaner housing - which was way easier than I was expecting.We need a pic with the air cleaner off. Need to see where the stray hose connects to the carbureator. In your second Pic that is the can for the vacuum advance,connect it to manifold vacuum. You still need to check accelerator pump shot. Put a piece of hose on the vacuum advance and suck on it does the diaphragm move you can feel the Plunger on the back with your finger. Does it hold vacuum or do you have to keep drawing on it?
With it off I did find an idle hose that I think came off that diaphragm so I put that back on. It didn't seem to change anything. I fiddled with the moving parts a little to see if they're moving cleanly - they are. One little adjuster I don't think I was supposed to mess with as it didn't pop back into place. Any idea what this is?
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Here's the pics from right after I removed the cover (before connecting the vacuum line)
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And also - this was that mystery hose - it was coming off of the air cleaner housing connected to something called AC. Thoughts?
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