1985 Ford Escort Base, 2D Hatchback, 1.9 9, AutomaticFACTORY OEM SERVICE PROCEDURE

Altitude Pressure Variations

ALTITUDE PRESSURE VARIATIONS

Altitude (Ft. Above Sea Level) Absolute Pressure of Atmosphere(psi) (1) Gauge Altitude Correction (psi)
0 14.7 0
1000 14.2 -0.5
2000 13.7 -1.0
3000 13.2 -1.5
4000 12.7 -2.0
5000 12.2 -2.5
6000 11.7 -3.0
7000 11.3 -3.4
8000 10.9 -3.8
9000 10.5 -4.2
10,000 10.1 -4.6
(1) Subtract correction shown from gauge readings.
ALTITUDE VACUUM VARIATIONS

Altitude (Ft. Above Sea Level) Complete Vacuum (In. Hg) (1) Gauge Altitude Correction (In. Hg)
0 29.92 0
1000 28.92 +1.0
2000 27.82 +2.1
3000 26.82 +3.1
4000 25.82 +4.1
5000 24.92 +5.0
6000 23.92 +6.0
7000 23.02 +6.9
8000 22.22 +7.7
9000 21.32 +8.6
10,000 20.52 +9.4
(1) Add correction shown to gauge readings.
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