Vacuum - Where to test

[mmyton]

Where is the best location to test vacuum with a guage? Can I use most any of the vacuum lines or is there a preffered location? I have never tested, so I want to make sure my readings are correct.

Thanks!

 

[woody]

best source for constat vacuum is the intake manifold....feeds vacuum directly to your brake booster...pull the line off the booster, plug in your gauge.

 

[60wag]

If you have AC, there's a second smaller tap in the same fitting as the brake booster hose. Its a little easier to pull the hose off and its the same diameter hose as most of the vac guage fittings.

 

[bignose]

Look in the tech section under Vacuum 101.

 

[NocalFJ60]

Right under the carb on the driver's side there is a right angle hard tube that has a hose connected to it from the manifold. This is a easy place to measure your vacuum.