Exam (elaborations)
Usps exam Questions and and answers
Usps exam Questions and and answers
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Usps exam 943 944 945HC
hydrocarbons
Hc is caused by
Misfire
Nox
High exhaust temps caused by high combustion temp
Egr open
Lean
Egr closed
Rich
Rich
Black smoke
Lean
White smoke
Secondary spring
Goes on first
lower ball joint
Load bearing
Vacuum range
14-22 "
Cam to crank
Crank turns 2 times per 1 cam rotation
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