Toyota 17101-62020 Manifold, Intake

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Before you make any move of pulling out the intake manifold, get a hold of your stereo's negative terminal then disconnect the battery to get beyond the anti theft system code if there is any. Pump out the coolant into a mixing bucket and then, remove the air cleaner assembly, the throttle body, the fuel injectors and the air intake plenum. It is also important to label all the remaining wires, hoses, and brackets connected to the intake manifold and the coolant outlets with new labels and remove them from the original bundle. Loosen and take off the intake manifold to engine bolts starting from the outside and going to the inside to make sure that the manifold is fully detached from both cylinder heads. Based on the above guidelines, if the manifold is stuck, do not use force and pry between gasket mating surfaces as this will damage them. For installation, scrape off the gasket material and sealant from the manifold and cylinder heads and then wash with lacquer thinner/acetone. New gaskets should be used and the manifold put on the engine; be certain the gaskets stay in position prior to putting the nuts or bolts; starting with the interior bolts and work towards the exterior. Slightly over torque the nuts or bolts in three or four operations, starting with exerting an equal amount of torque from the center in order to avoid distortion. Install the remaining components back in the reverse which it was removed, fill the cooling system and start the engine and check for any fuel or vacuum leakage or any leakage in the coolant.

To perform a replacement of the intake manifold, it is necessary to; first of all, disconnect the negitive cable from the battery if the vehicle has a head unit stereo be sure to have the activation code. Subsequently, dump the fuel pressure, unbolt, and tag the PCM's vacuum and PCV hoses that link to the manifold with other accessories such as the brake booster and the air conditioning idle-up valve. Disconnect the throttle body and the air intake plenum, next is the fuel rail and the injectors as a unit. Remove vacuum hoses between the EGA valve and vacuum modulator, make marks on the hoses, and then undo the EGA pipe from the manifold, thus placing the EGA part aside. As for the manifold, it should be unbolted from, and separated from the engine; Prior to this, the fuel return line should be disconnected from the lower portion of the cylinder head. Regarding installation, it is required to clean the mating surfaces of the intake manifold and cylinder head with lacquer thinner or acetone and in case the gasket looks oily, it is also necessary to check the manifold for warping and refinish it if it is required. Place a new gasket in between the manifold and the cylinder head, and fit the nuts/bolts when torquing them use three equal increments of turning the nuts/bolts till you get to the required torque while tightening the nuts/bolts, do not tight all of them on the same center to avoid warping the manifold. Bolt the rest of the parts as they were removed and ensure the throttle linkage moves freely before starting the engine and with the engine running check for leaks in the coolant and vacuum connections. Last but not least, for a final test, drive the car on the highway to check all the accessories and the cruise control system if installed.

To perform a replacement of the intake manifold, it is necessary to; first of all, disconnect the negitive cable from the battery if the vehicle has a head unit stereo be sure to have the activation code. Subsequently, dump the fuel pressure, unbolt, and tag the PCM's vacuum and PCV hoses that link to the manifold with other accessories such as the brake booster and the air conditioning idle-up valve. Disconnect the throttle body and the air intake plenum, next is the fuel rail and the injectors as a unit. Remove vacuum hoses between the EGA valve and vacuum modulator, make marks on the hoses, and then undo the EGA pipe from the manifold, thus placing the EGA part aside. As for the manifold, it should be unbolted from, and separated from the engine; Prior to this, the fuel return line should be disconnected from the lower portion of the cylinder head. Regarding installation, it is required to clean the mating surfaces of the intake manifold and cylinder head with lacquer thinner or acetone and in case the gasket looks oily, it is also necessary to check the manifold for warping and refinish it if it is required. Place a new gasket in between the manifold and the cylinder head, and fit the nuts/bolts when torquing them use three equal increments of turning the nuts/bolts till you get to the required torque while tightening the nuts/bolts, do not tight all of them on the same center to avoid warping the manifold. Bolt the rest of the parts as they were removed and ensure the throttle linkage moves freely before starting the engine and with the engine running check for leaks in the coolant and vacuum connections. Last but not least, for a final test, drive the car on the highway to check all the accessories and the cruise control system if installed.

Run the engine and check for coolant and vacuum leaks.

Install the remaining parts in the reverse order of removal.

Disconnect the negative cable from the battery. Caution: If the stereo in your vehicle is equipped with an anti-theft system, make sure you have the correct activation code before disconnecting the battery.