michigan engine tuneup sos exam questions and
answers
what will cause fuel smell - Answer-stuck open purge valve
/.voltage spike not high enough on one cylinder - Answer-failed spark plug
/.flashing check engine light - Answer-misfire
/.a catalytic converter - Answer-turns hc into c02 and h20
/.during cylinder leakage test air escapes at the throttle body - Answer-leak at intake
valve
/.a car with this will not start - Answer-bad crank sensor
/.in efi fuel pressure is controlled by - Answer-engine vacuum
/.if egr valve goes out the fumes can go back into the intake and cause - Answer-rough
idle and stalling
/.injector pulse width is - Answer-the time an injector is open
/.the carbon canister is a part of - Answer-the fuel recovery
/.white spark plug tip - Answer-too hot
/.a leaking intake manifold can cause - Answer-a lean condition because additional air
makes it into the combustion chamber
/.a fouled sparkplug would - Answer-increase emissions
/.runs rough and backfires around throttle body - Answer-intake valve leak
/.how is a rotary engine different from a conventional engine - Answer-no connecting
rods or pistons
/.the egr system is designed for - Answer-cruising conditions
/.bad compression - Answer-can be caused by bad valves and piston rings
/.wet test on a 4cyl. dry on cylinder 4 at 75 psi dry and 80 psi wet. all other cylinders are
140 psi. - Answer-cylinder 4 has bad valves
answers
what will cause fuel smell - Answer-stuck open purge valve
/.voltage spike not high enough on one cylinder - Answer-failed spark plug
/.flashing check engine light - Answer-misfire
/.a catalytic converter - Answer-turns hc into c02 and h20
/.during cylinder leakage test air escapes at the throttle body - Answer-leak at intake
valve
/.a car with this will not start - Answer-bad crank sensor
/.in efi fuel pressure is controlled by - Answer-engine vacuum
/.if egr valve goes out the fumes can go back into the intake and cause - Answer-rough
idle and stalling
/.injector pulse width is - Answer-the time an injector is open
/.the carbon canister is a part of - Answer-the fuel recovery
/.white spark plug tip - Answer-too hot
/.a leaking intake manifold can cause - Answer-a lean condition because additional air
makes it into the combustion chamber
/.a fouled sparkplug would - Answer-increase emissions
/.runs rough and backfires around throttle body - Answer-intake valve leak
/.how is a rotary engine different from a conventional engine - Answer-no connecting
rods or pistons
/.the egr system is designed for - Answer-cruising conditions
/.bad compression - Answer-can be caused by bad valves and piston rings
/.wet test on a 4cyl. dry on cylinder 4 at 75 psi dry and 80 psi wet. all other cylinders are
140 psi. - Answer-cylinder 4 has bad valves
