Dodge Omni/Horizon/Rampage 1978-1989 Repair Guide

Introduction

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Before emission controls were mandated on the internal combustion engines, other sources of engine pollutants were discovered, along with the exhaust emission. It was determined the engine combustion exhaust produced 60% of the total emission pollutants, fuel evaporation from the fuel tank and carburetor vents produced 20%, with the another 20% being produced through the crankcase as a by-product of the combustion process.

 
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