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That's good. Ck for exhaust leak @ intake mani to cat by pulling hose from back of the mani @ 1500 rpm. If no exhaust ck valve on the mani behind the ACV is OK, if exhaust comes out them ck valves need to be replaced.
Now you get to ck the rest of solenoid valves for proper function.
Got to eliminate probables, you know.
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