How big is the intake manifold tuning valve?

Socket extension (s) at least 3″ long. Apparently this part goes by a couple names – the Intake Manifold Runner Control (IMRC) and the Intake Manifold Tuning Valve (IMTV). I will be using the former as it seems to be more descriptive of its function.

What is the name of the intake manifold runner?

Apparently this part goes by a couple names – the Intake Manifold Runner Control (IMRC) and the Intake Manifold Tuning Valve (IMTV). I will be using the former as it seems to be more descriptive of its function. To start, first remove the top piece of engine cowling on the passenger side by removing the clips – be careful!

Is there a vacuum ahead of the throttle plate?

But there is no significant vacuum at a port ahead of the throttle plate when the throttle is closed. Vacuum appears at such a port only when the throttle opens. It’s important to remember that manifold vacuum is used to power vehicle systems that need a steady supply of low-pressure air under all engine operating conditions.

How to fix vacuum leak at intake manifold runner?

Use the screwdriver to help pry them off (yellow arrows in pic above – 1 clip is out of frame). Also be careful of the vacuum hose marked with the green arrow. Don’t break it or the car will have a fit (I believe it controls the evaporative emissions system).

Is it possible for an intake manifold to leak?

WELCOME TO THE CLUB! Intake gaskets should not be too likely to leak. Hoses are noted for leaks, as well as PCV failure/leak. Of course the Vulcan is noted for it’s O-Ring which should be a simple change.

How big is the intake manifold tuning valve?