[TR] Intake Manifold Vacuum

[robertko at charter.net]

To the list,

My TR6 has a rough, lumpy idle.  I'm going through all of the standard troubleshooting steps to identify and correct any problems in an attempt to smooth out the idle.  I measured 11 inches on my vacuum gauge and believe it is too low for idle vacuum.

If anyone has measured the vacuum on a smooth idling TR6, could you post what your measurement was?  I took my measurement from the 1/4 inch nipple which is part of the brake booster nipple on the intake manifold.

thanks
Robert
74 TR6