Full Size Buick FWD V6-181 3.0L (1984)
FIGURE 2 - VACUUM BREAK TESTING PROCEDURE
2.
Use hand-held vacuum pump to apply 15" Hg (51 kPa) vacuum to the vacuum break, (figure 2).
A.
The vacuum break plunger should move full travel. Apply finger pressure to plunger to see that it has moved through full travel. If not,
replace the vacuum break.
B.
The vacuum break diaphragm should hold vacuum for at least twenty seconds. If it does not, replace the vacuum break.
