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Does 1990 Chevy Blazer 5.7 Have A Smog Pump?

My 1990 Chevy Blazer with 5.7 liter engine does not have a smog pump or an air injection system. Is this normal for this vehicle? Thank you.

Answer:

More than likely someone has removed the smog pump and air injection system from your 1990 Chevy Blazer sometime in the past. According to the Motor Emissions Application Guide, a 1990 Chevy Blazer C/K Truck Series came with a Pump Type Air Injection System. posted by SmogTips Support

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