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Re: 4.3 CPI Injector replacement pictures
I believe those ports are for your EGR valve gas circulation and not your exhaust and that would explain the carbon buildup from a rich running engine. I wouldn't cause too much of a problem but it will be limiting the EGR gas going into the cylinders. No biggie but make sure you clean it out good. Been noticing any pinging lately?
Also, I notice that you have the wrong plug wires installed. Your should not be using 90 degree boots but straight boots on the cap end.
Overall, looks like you have had a leak for a while seeing the carbon buildup in the upper plenum.
How have was it to remove the lower intake?
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