Engine fuel an ignition system
questions & answers graded A+
Propane is also known as LP gas, is often mixed with about _______ percent of other gases,
such as butane, propylene, and mercaptan - correct answer ✔✔ 10
Even though the content of many alcohol blends doesn't affect engine drivability, using gasoline
with alcohol and warm weather may cause - correct answer ✔✔ Warm-engine stumble, stalling,
or rough idle
2 Techs are describing engine operation and requirements at high altitude. Tech A says that
when traveling at high altitude, the engine produces more power. Tech B says that at high
altitudes the octane rating of fuel doesn't need to be as high because the engine can't take in as
much air. Who is correct? - correct answer ✔✔ Tech B
Which is these is a lean condition caused by vaporized fuel in the fuel system? - correct answer
✔✔ Vapor lock
Technician A says, the coil-on-plug (COP) System eliminates the spark plug wires that are often
the source of electromagnetic interference, which can cause problems for some computer
signals. Technician B says, the three-wire COP system used by GM has an ICM built into the coil
assembly. Who is correct? - correct answer ✔✔ Both Technicians A & B
Cloud point is the low-temperature point at which the waxes present in the most diesel fuels
tent to for crystals that can clog the - correct answer ✔✔ Fuel filter
Diesel engines manufactured in 2007 standards or newer must use ultra-low-sulfur diesel fuel
containing less than_________for sulfur - correct answer ✔✔ 15 PPM
questions & answers graded A+
Propane is also known as LP gas, is often mixed with about _______ percent of other gases,
such as butane, propylene, and mercaptan - correct answer ✔✔ 10
Even though the content of many alcohol blends doesn't affect engine drivability, using gasoline
with alcohol and warm weather may cause - correct answer ✔✔ Warm-engine stumble, stalling,
or rough idle
2 Techs are describing engine operation and requirements at high altitude. Tech A says that
when traveling at high altitude, the engine produces more power. Tech B says that at high
altitudes the octane rating of fuel doesn't need to be as high because the engine can't take in as
much air. Who is correct? - correct answer ✔✔ Tech B
Which is these is a lean condition caused by vaporized fuel in the fuel system? - correct answer
✔✔ Vapor lock
Technician A says, the coil-on-plug (COP) System eliminates the spark plug wires that are often
the source of electromagnetic interference, which can cause problems for some computer
signals. Technician B says, the three-wire COP system used by GM has an ICM built into the coil
assembly. Who is correct? - correct answer ✔✔ Both Technicians A & B
Cloud point is the low-temperature point at which the waxes present in the most diesel fuels
tent to for crystals that can clog the - correct answer ✔✔ Fuel filter
Diesel engines manufactured in 2007 standards or newer must use ultra-low-sulfur diesel fuel
containing less than_________for sulfur - correct answer ✔✔ 15 PPM
