A
What are the 3 precious metals in catalytic converters
platinum (Pt), along with palladium (Pd), and rhodium (Rh)
The traditional automobile battery type is the:
A) lead-acid.
B) ion.
C) helium.
D) nitrogen
A) lead-acid.
Technician A says some tire pressure monitoring systems have a sensor mounted in each wheel rim. Technician B says some tire pressure monitoring systems use the wheel speed sensors in the ABS system to detect tire pressure. Who is correct?
A) Tech A
B) Tech B
C) Both Techs A and B
D) Neither Tech A nor B
C) Both tech A and B
What does EFI stand for
Electronic fuel injection
what does a 4 stroke have that a 2 stroke does not
valves, timing set, Camshaft.
When rebuilding a engine when should the valve lash be set. Tech A says only it is only needed when putting the rocker arms on with the motor cold. Tech B says the lash should be set when putting the rocker arms on and checked when warm after the first run and be reset.
Who is correct?
A) Tech A
B) Tech B
C) Both tech A and Tech B
D) Neither Tech A nor Tech B
B) Tech B
On manual transmission the customer complains of grinding when trying to go into gear. what should the first thing you as a technician should do?
Verify customer concern
What is the difference between bore and stroke in a engine?
Bore is diameter of the cylinder
Stoke is how far the piston moves up and down in it
A growling noise is heard from the front end of a vehicle. What is most likely the problem?
Wheel bearing
What is the purpose of putting on headers?
route exhaust gases from the engine to the exhaust system but they create less exhaust backpressure than exhaust manifolds, thereby allowing the engine to breathe more easily
On a older vehicle the blinker indicator on the dash blinks rapidly. What does that mean?
Blinker bulb is burnt out
A growling noise is heard from the front end of a vehicle while driving. what Could be the cause?
Wheel bearing failure
DOT on tire reads 1915 tech A says this means the tire was made on the 15 week of 2019. Tech B says that this means the tire was made on the 19th week of 2015. Who is correct?
Tech A
Tech B
Both Tech A and Tech B
Neither Tech A nor Tech B
Tech B
A vehicle equipped with a carburetor is backfiring out of the carburetor. What could this be a symptom of?
Lean Air fuel mixture
What is the difference between rich air/fuel mixture and lean air/fuel mixture?
Lean is getting not enough gas
Rich is getting to much gas
what are the strokes in the 4 stroke cycle
intake, compression, power ,and exhaust
what is the purpose of a differential.
direct power from driveshaft to wheels while multiplying torque
Transfer case fluid in a 4wd vehicle is to be drained and replaced. Technician A says that some transfer cases have the word "Drain" cast into the housing to indicate the drain plug location. Technician B says that some drain plugs can be removed 3/8" extension on a ratchet wrench. Who is correct?
A. Tech A
B. Tech B
C.Both
D. Neither
Tech A
what PPE should be used when spraying brake cleaner?
protective gloves/protective clothing/eye protection/face protection.
what causes a diesel engine to run away?
oil in the intake usually caused by leaking turbo seals
What year did manufacturers switch to OBD2
1996
On a system with drum brakes what gives the hydraulic pressure to the brake shoes.
Wheel cylinder
What does DOT mean on brake fluid
Boiling point
Customer states that when braking steering wheel shimmys. Tech A says that the brake rotors are warped. Tech B says that it could be worn cv axles could be the cause. Who is correct?
A) Tech A
B) Tech B
C) Both tech A and tech B
D) Neither tech A nor tech B
C) Both tech A and tech B
Technician A says that a faulty rear ball joint could affect a vehicle's rear wheel alignment. Technician B says that a faulty rear ball joint could be a safety hazard. Who is correct?
A. Tech A
B. Tech B
C. Both
D. Neither
B. Tech B