How long should it take for air pressure to build from 50 to 90 PSI with the engine at operating RPM?
a.Within 5 minutes
b.Within 10 minutes
c.Within 3 minutes
d.Within 1 minute
Explanation
The air compressor should build air pressure from 50 to 90 PSI within 3 minutes with the engine at operating RPM. If it takes longer, the air compressor or the system may have a problem that needs to be repaired before driving.