Question # 30

A vehicle fails emissions for high CO and HC at idle. Fuel trims are negative, O2 sensors show rich condition, and fuel pressure is 18 psi above spec. What is the cause?

Options:

A.

Faulty fuel pressure regulator

B.

Weak ignition coil

C.

Dirty injector

D.

Faulty TPS sensor

Viewing question 30 out of 72 questions
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