Here is how I upgraded the rubber vacuum hoses on this year 2000 Hyundai trajet.
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Step 1: The Brake Line.
This is a new valve I installed. I chose the right size of silicone hose and slid on both sides of the connection.
Step 2: The Brake Line.
The oem rubber hose I removed the spring clamps. The replacement silicone hoses fit tightly onto the nipples and didn't require any clamps.
Step 3: The Fuel Pressure Regulator Line.
This tiny line was also replaced with long life silicone hose.
Step 4: Completion!
Here the engine looks a bit prettier and should offer improved reliability.