Year of Manufacture *: 2006
Engine Size and Code *: 1200 z12xep
( Optional ) Scanner Used: Kts and vaux com
Hunting at idle. Fine when revved.no fault codes.timing checked all OK. Compression check all 210 psi. Fuel pressure good.
Manifold vacuum on tick over only 10 inhg.
Connected mityvac to map senso, live data alters when vacuum applied 20 inhg = 1.85 volts (within spec.)
smoked tested inlet no leaks..
Any pointers to what to test next
Paul
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