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JL8Jeff · 01-07-2013, 06:22 PM

The EGR is only on the passenger side up on the front of the engine going into the front of the exhaust manifold, the AIR tubes are on both sides and have the check valves. The check valves can go bad (and often do). The air should only be able to go into the manifold and not come back through.

01-07-2013, 06:22 PM	#78
JL8Jeff Hippy Mod, Bergermeister Meisterberger, Moderator Join Date: Aug 2004 Location: Ewing Posts: 6,216 iTrader: (3)	The EGR is only on the passenger side up on the front of the engine going into the front of the exhaust manifold, the AIR tubes are on both sides and have the check valves. The check valves can go bad (and often do). The air should only be able to go into the manifold and not come back through. __________________ 69 Z28 JL8 4 wheel disc brakes - being restored 09 Silverado Z71