Exhaust valves run much hotter than intake valves and may burn and leak compression at high mileage. Timing components should be replaced if worn or if the chain has stretched. When you have finished the test, you may have time to go back to those questions you have marked. Hard spots and variations in thickness can cause uneven wear that can cause pedal vibration when braking. Technician B says this could be caused by leaking secondary insulation. Rotor thickness should always be measured with a micrometer.
Please allow up to 48 business hours to process your request. Your score will be based on the number of correct answers that you give. Candidates must be able to properly analyze and estimate collision damage on an automobile. Then go on to the next question. Wear in the cylinder increases clearances and can cause piston slap when the engine is cold.
Other gaskets include timing cover, manifold and thermostat as well as crankshaft and valve seals. The practice test is perfect for gauging your knowledge on the topics covered inthe P2 certification exam. But it tends to aerate when cycled rapidly, and is not recommended for vehicles that have antilock brakes. Valve cover and oil pan gaskets may be cork or molded silicone rubber. New crankshaft seals should be installed when crankshaft is replaced.
Reduces brake pressure to the front wheels c. Advising a customer about the potential damage that can occur if they decline a leak repair is not a scare tactic, it is important that they know…. The pump may be located in the crankcase or the front engine cover. Bearings can be damaged by dirt, lack of lubrication or oil breakdown. I bought this book and on my second attempt I passed by one point.
Rings may be cast iron, ductile iron or steel, and plain, chrome plated, nitrited or moly faced. Finish your prep by taking our Timed tests. The valve is usually located on or near the master cylinder. Brake rotors must be relatively smooth, flat and free from defects. . The profile and position of the lobes determines the power and torque characteristics of the engine. Motor Age Training On-Demand In-depth individual video training courses, on-demand, for techs and managers at all levels of skill and experience on a wide variety of automotive subjects.
Replacements must be the correct size for the engine. The first time I took the P2 test,I didn't use study material and I failed it by one point. We have everything you need to make your life easier as you begin your career as an Automotive Service Excellence Certified Master Mechanic. Rings are directional and must be installed on pistons right side up. Answer C Incorrect and why its incorrect Answer D Incorrect and why its incorrect.
Candidates must show the ability to analyze and repair damage due to automotive collision, as well as paint damage. Engine oil and coolant leaks should not be ignored. The lateral thickness of the rings also must match the depth of the ring grooves in the pistons. Worn bearings can produce noise and low oil pressure. Crankshaft kits include a reground crankshaft and new undersized bearings. Timing chain sets include a new chain, camshaft gear and crankshaft gear. Candidates must show the ability to diagnose and repair various truck equipment, as well as related systems, on all truck and tractor classes.
The fluid must also meet specific viscosity, appearance clear to amber , fluid stability, anticorrosion, rubber compatibility, evaporation and resistance to oxidation requirements. Although this is the priciest of the three options, we highly recommend this test preparation series! A worn master cylinder must be rebuilt or replaced. The lifters move the pushrods that operate the rocker arms atop the cylinder head to open the valves. In pushrod engines, the camshaft is located in the engine block. Official test score document must be submitted along with your request. Visit the Contact Us page to submit a request.
The latter two are used in performance applications. Books, calculators, and other reference material will not be permitted in the test room. Hydraulic lifters ride on the cam lobes. The cam may sit atop the valves and open the valves directly, or it may be offset and use followers to open the valves. Worn or broken rings reduce compression, increase blowby into the crankcase and increases oil consumption. Certification brings with it benefits including better compensation, increased career opportunities and respect from peers.
In addition to the parts test questions and overviews, we provide an overview of the store operations and customer relationship portion of the test. Replacement filter must be the correct one for the application, as some side-mounted filters contain check valves to prevent oil from draining back into the engine after the engine is shut off. Older pushrod engines usually have flat bottom lifters tappets. Installation requires a ring compressor tool, and may require press fitting the wrist pins unless the pistons have full floating wrist pins with locks at each end. Many fluids exceed these requirements.