why are there 2 different type of fuel injectors for a 2003 chevy blazer 2 wd 4.3 l v 6 and can you use both

Asked by Feb 15, 2013 at 12:04 AM about the 2003 Chevrolet Blazer 2 Door LS

Question type: Maintenance & Repair

they have one that is all black and they have one that has 2 wires that run on the outside the fuel line and has a white tube on the front where it plugs in

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One type is for a sequential central port injection (SCPI) system. The other type is for a Multi Port Injector system.

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