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Question # 38

A car fails I/M for high HC. Spark is strong, trims are normal, but cylinder #1 compression is 65 psi lower than others. What is the cause?

Options:

A.

Mechanical issue (valve leakage or worn rings)

B.

Faulty MAP sensor

C.

Dirty injector

D.

Restricted catalytic converter

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L1 Overview

Name Automotive Service Excellence Level 1
Code L1
Vendor Skilled Trades
Certification ASE

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