Throttle Body Vacuum Line

Your mouth or another pressure source.

Throttle body vacuum line.

If you found a vacuum leak either at the intake manifold or at the base of the throttle body first try tightening the intake or throttle body mounting bolt. If the reading is low or non existent there s a blockage or leak in the vacuum line. You should have a vacuum diagram on the cross member in front of your engine showing you where the lines coming out of the throttle body go. This is awkward to get to that line runs under the plenum throttle body along the fuel line into the intake manifold.

Air intake preheat system bosch cis canada fig. Attach your vacuum gauge and start your vehicle s engine. 9a engine egr system. Throttle body vacuum connections.

Replacing the crap rubber factory vacuum lines with more crap vacuum lines. I disconnected the other rubber piece other side off of the intake maniold by squeezing some needle nose pliers and working it off. Your gauge should read between 14 and 18 inches of vacuum. Vacuum hose routing cis canada.

A vacuum leak tricks the throttle body and will result in a high low idle rpm. Tighten the bolts gradually following a crisscross pattern when tightening a manifold start at the center and work your way out. This is a component that acts as a gate keeper and establishes a minimum or maximum position for a throttle body plate to be opened or closed. What you can usually find locally for vacuum line is terrible.

Mine m116 has 3 others are different. Visually check the entire length of the hose for the problem. Allow your car to idle for a couple of minutes. Tbird9491 contributed this snippet regarding the t.

Vacuum leaks can be found with a smoke machine soap water or with a flammable spray. Cis canada fuel injection vacuum hose routing. Vacuum leaks are often coming from the intake manifold gasket broken vacuum hoses or the throttle body gasket. Can of starter fluid.

Vacuum leaks can disrupt the air fuel flow because of an imbalanced airflow which can cause throttle body pressure problems. Vacuum diagram found in the factory service manual fsm 2.