OEM 2010 Chevrolet Impala Intake Manifold

2010 Chevrolet Impala Parts Questions & Experts Answers

• Q: How to replace the lower intake manifold on 2010 Chevrolet Impala?

  A: To replace the lower Intake Manifold, you should remove the battery ground negative cable first. However, begin by taking off the upper Intake Manifold, followed by left and right valve Rocker Arm covers. Disconnect the fuel feed line from the Fuel Rail and from the Fuel Injector inline connector. From underneath the carb intake, remove brake clean solenoid assembly bolt, lower mount two c-drive to vacuum braket (02 & 03). Disconnect and remove throttle lever cable; remove Fuel Injector harness connector bracket bolt, separate engine coolanttemp (ECT) & camshaft position (CMP) sensor electrical connectors. Then, take off the Fuel Injector rail bolts and the Fuel Rail, and the lower Intake Manifold bolts and the lower Intake Manifold. Slightly loose the valve Rocker Arm bolts and position the valve train parts in a rack to preserve the order. Disconnect the valve rocker arms and push rods, keeping the mind that inlet push rods are 147.51mm (5.81in) and the output push rods are 154.87mm (6.1 in). Clean the gasket and seal surfaces (cylinder heads and engine block) and the lower Intake Manifold with degreaser, removing all loose room temperature vulcanizing (RTV) sealer. Then remove the lower Intake Manifold gaskets and seals, then clean the rtv sealer from gaskets and seal surfaces. Replace those new lower Intake Manifold gaskets and seals, apply prelube to the ends of the push rods, and reinstall them in their original locations. Apply prelube to the surfaces of the Rocker Arm friction, and install the valve rocker arms in their original locations, tightening the valve rocker arms, to 34 nm (25 lb ft). With the new gaskets and seals fitted apply a small drop of rtv sealer to the four corners of Intake Manifold to the engine block joints and fit the lower Intake Manifold. Apply sealer to the lower intek manifold bolt threads and install the lower Intake Manifold bolts in the sequence with specified torque ratings: bolts (1, 2, 3, 4) to 16 nm (12 lb ft) and bolts (5, 6, 7, 8) to 25 nm (18 lb ft). Check the Fuel Rail, fuel injectors, and Fuel Injector o-rings for damage and replace if necessary, lubricating the o-rings with engine oil prior to starting the injector nozzles into the lower intake injector manifold bore. Push the injector rail into position, until it fully engages and click the 2 bolts for the Fuel Injector rail into position and tighten down 10 nm (89 lb in). Attach the cmp sensor and ect electrical connectors, raise the hook of the Fuel Injector harness connector bracket, install it onto the Intake Manifold, and tighten the bracket bolt to 8 nm (71 lb ft). Bare the Fuel Injector inline connector and the fuel feed line to the Fuel Rail. Lastly, replace the right and left valve Rocker Arm covers, as well as the upper Intake Manifold, and reconnect the battery ground negative cable.