Engine performance #3

While monitoring fuel pressure,the specification is 35 to 40 psi and the reading is 60 psi. what could be the problem

• injectors are not opening

• fuel pump outlet check valve is stuck closed

• there is a restriction in the fuel return line

• the fuel pressure regulator is stuck open

Most fuel pressure regulators increase fuel pressure as

• the vacuum decreases

• oil pressure increases

• the vacuum increases

• oil pressure decreases

A partially restricted catalytic converter might cause

• a lean condition

• low engine power

• lower running temperature

• higher engine compression

If the EGR valve is stuck slightly open,theengine idle will most likely be

• high

• unchanged

• rough

• smooth

A leaky exhaust system could cause

• engine overheating

• excessive emission

• early fuel evaporation

• low oil pressure