RTicUL8
NAXJA Forum User
- Location
- Rocky Mountain High... Colorado!
2000 4.0L
The piece on the fuel rail - between #3 and #4 injector.
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The piece on the fuel rail - between #3 and #4 injector.
.
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What is this?
- Thread starter RTicUL8
- Start date
winterbeater
NAXJA Forum User
- Location
- Royal Oak, Michigan
Pulse dampener, not to be confused with a fuel pressure regulator.
RTicUL8
NAXJA Forum User
- Location
- Rocky Mountain High... Colorado!
Older fuel rails don't have this.
So what does this "Pulse Dampener" do?
.
So what does this "Pulse Dampener" do?
.
winterbeater
NAXJA Forum User
- Location
- Royal Oak, Michigan
The fuel injectors pulse. I suppose that the dampener evens out the pressure pulses in the fuel rail. I'm not sure what would happen if it wasn't there, but one possibility is metal fatigue and stress cracking of the fuel rail. Older fuel rails had the vacuum pressure regulator.
