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Home >> Isuzu >> 1986 >> Trooper II Base, 2D Utility, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> High Altitude Compensation System >> Description
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High Altitude Compensation System: Description

The high altitude emission system used in the automatic transmission equipped P'UP is similar to that used in the I-Mark. The manual transmission equipped P'UP and Trooper II use a delay check valve to control high altitude emissions.

If principal vehicle use is changed from low altitude to high altitude or vice-versa, a modification and/or an altitude adjustment will be necessary to improve engine performance and exhaust emission control performance.

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