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Mercury
Grand Marquis
General
Fuel system?
SERGIO MACIAS
MEMBER
1998 MERCURY GRAND MARQUIS
4.6L
V8
2WD
AUTOMATIC
209,000 MILES
Does anybody know what this is called?
Image (Click to make bigger)
Friday, August 9th, 2024 AT 7:27 PM
1 Reply
KEN L
MASTER CERTIFIED MECHANIC
47,536 POSTS
That is called a "Schrader valve" which is used to help test the fuel pump pressure.
This guide can help see what it is used for:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Let us know if you need anything else.
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Saturday, August 10th, 2024 AT 10:58 AM
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