Re: 5.0
Reply #28 –
As long as the "down tube" is capped off, you won't get gassed. And there's 2 check valves, one to the heads, one to the exhaust.
If the ECU decides the system needs air from the smog pump, it tells the bypass valve (blue) to stop dumping the air outside and send it to the diverter (red), then it decides who needs it the most... the heads (yellow path) or the converter (green path).
And of course, a picture.... :D
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