1. tap on the cylinder heads
   warm up the engine
2. put on two pairs of gloves
   wear a hat

There's a reason why you're not supposed to push your engine hard before it warms up to operating temperature: the oil won't flow as well. The same is true about getting the most debris and filth out of the crankcase when you do an oil change.

1. guess
   it's always 20 lb.-ft. of torque
2. they should be hand-tight
   refer to manufacturer torque specs

Automakers use vast teams of engineers to create engines, and they know exactly how you should reassemble any portion of it. Get the torque specs for your engine before working on it, and use your torque wrench faithfully.

1. torque wrench
   shims
2. socket set
   toothpicks

If you can change the oil on your vehicle, a valve adjustment job shouldn't be beyond your capabilities. It can take several hours, depending on the engine, so set aside ample time.

1. gap
   electrode length
2. thread spread
   torque setting

If you don't have a spark plug gap tool, you can get one for extra cheap. While spark plugs come gapped, they might not be to the specifications for your engine.

1. get sucked into the cylinders
   burn oil
2. cause backfiring
   nothing

Valve seals are designed to keep the oil, which is needed to lubricate the different parts in the cylinder head, from leaking into the cylinders, where it will burn up, creating plumes of smoke coming from the tailpipe.

1. loose gas cap
   clogged fuel injectors
2. bad catalytic converter
   malfunctioning emissions sensor

While the check engine light may have to do with a serious engine-related issue, many times it's triggered by emissions sensors either not working or noting a fault somewhere, but you shouldn't ignore the light.

1. raises the red line to a higher rpm
   blows the head gasket if you rev too high
2. keeps the engine from revving too high
   makes a red light appear on the dash

A rev limiter protects the engine by keeping it from hitting certain RPMs. If you go beyond the red line on the gauge, engine damage will occur, at least at a certain point.

1. a lean mixture
   a balanced mixture
2. a super rich mixture
   turbos

The only way flames will shoot out of an exhaust is if a lot of gas isn't burning in the cylinders from a rich mixture, and then it combusts in the exhaust.

1. pistons
   exhaust gases
2. engine belt
   fuel system

A blower or roots supercharger is driven by a belt and works as a positive displacement lobe pump, of course pumping more air into the engine.

1. smooth out piston movement
   reduce emissions
2. keep the engine attached to the transmission
   to anchor the engine to the car's frame

Engine mounts provide a secure anchor to the car's structure, plus they're designed to reduce how many vibrations travel from the engine into the rest of the car, improving comfort and reducing noise.

1. defrost diesel fuel
   light the fuel on fire
2. help you see when working on the engine
   increase piston pressure

Too often, people think glow plugs are like spark plugs, when in reality their purpose is to defrost the fuel when temperatures drop too low, all so the engine will start.

1. supercharging
   fuel
2. air
   spark

While compression of the fuel and air mixture before the spark comes into the picture is also a necessary element, it doesn't require the use of a supercharger.

1. camshaft
   valves
2. crankshaft
   turbo

While the camshafts do spin, they're what controls the flow of air/fuel and exhaust gases, while the crankshaft is the first component to spin as a result of the forces created by combustion, so it originates all torque output.

1. adds more fuel
   cools the air
2. boosts the fuel
   spools the turbo faster

Nitrous oxide works to cool the intake air more, which means there are more oxygen molecules inside the cylinders, allowing the engine to use more fuel for a more potent burn, which leads to more power.

1. ladder breath
   cherry picker
2. corn husker
   engine ladder

An engine hoist or cherry picker is able to slide into a secure position, so you have the right support for installing or taking out an engine, although you should still double-check your work.

1. to avoid your significant other yelling at you about cold seats
   to get the sensors calibrated
2. to warm up the oil so it flows better
   to clear out the intake manifold

When temperatures take a dive, the oil in your engine doesn't flow as freely. As the engine heats up, the oil will start to flow as it should, but that should only take a few minutes before the car's driveable.

1. engine insulation
   quick-release bolts
2. valve covers
   engine access hatch

If your engine needs valve adjustments semi-regularly, valve covers make the job easier since you don't have to remove the entire cylinder head cover to access the valves.

1. the crankshaft
   the belts
2. intake air
   exhaust gases

The turbines inside a turbocharger are spun by exhaust gases, which then suck in fresh air to be sent to the engine, boosting performance quite literally.

1. power
   torque
2. fuel usage
   the swept volume

Engine displacement is a measure of the swept volume for all pistons as they travel inside the cylinders of the engine, starting from top dead center to bottom dead center.

1. it looks like a boxer punching
   the guy who designed it was a boxer
2. its from the dog breed
   they were originally made of cardboard boxes

Boxer engines feature a flat cylinder configuration, where the pistons on each side alternate their strokes, so from above it looks like a boxer punching with one glove and then the other.

1. engine cooling
   keeping the head gasket from blowing
2. removing engine deposits
   lubricating engine components

While most people know that clean, fresh oil is good for lubrication, it provides other benefits you usually don't think about.

1. misfiring
   backfiring
2. shimmying
   bouncing

Engines normally run quite smoothly, but misfires happen when the fuel isn't combusting as it should. This can be caused by a fault with the spark plugs or fuel delivery, along with a ​few other rare problems.

1. castor
   10W-30
2. only synthetic
   whatever the manufacturer suggests

On most cars, the recommended oil type is printed on the oil fill cap. If not, you can find it in the owner's manual or call your local dealer to get that info.

1. balls
   lobes
2. tripods
   frisbees

You can call these various sections lobes or journals. Their function is to control when the valves open, for how long, and how much.

1. engine RPMs
   turbo lag
2. torque output
   sputtering

Like it or not, torque output from your engine doesn't stay the same, which is why there's a torque curve when you put your car on a dyno. The flywheel helps smooth that out for more predictable performance.

1. combusts the fuel
   mixes the fuel and air
2. cleans the air
   injects the fuel

Compared to electronic fuel injection, carburetors aren't nearly as efficient, partly because they don't adjust the air-fuel mixture based on changing factors like ambient temperature.

1. a series of passageways where the coolant travels
   an electric blanket
2. a way to warm the engine in the morning
   the electrical system

The purpose of the water jacket is to keep your engine cool enough that you're not dealing with overheating of any kind, making it a critical part of the engine design.

1. spark plug tubs
   spark plug tubes
2. spark parks
   spark plug wells

You'll need an extension and special spark plug attachment for your socket wrench to remove or install spark plugs, thanks to the wells being so deep.

1. the battery is dead
   the alternator is bad
2. the spark plugs aren't firing
   the distributor is bad

Quite literally, needing to jump start an engine means there's no spark from the spark plugs, which could be caused by a number of electrical system issues, most likely the battery or alternator.

1. to accelerate airflow
   to keep dust and debris from flowing inside
2. to read the air temperature
   to create an overboost safety check

The air filter on your engine keeps deposits from dust, etc., from building inside the engine, which is why you should check your air filter regularly.

1. spark plugs
   extreme compression
2. magneto
   nitrous oxide

Through extreme compression exerted by the pistons, diesel engines ignite the fuel, which is part of the secret for why they boast such amazing fuel efficiency specs.

1. the exhaust gases warm up faster
   the exhaust manifold is liquid cooled
2. they're easier to modify
   it saves on space

An integrated exhaust manifold can boost engine efficiency drastically, thanks to its design, but it can't be swapped out for performance headers, something tuners like to do for extracting more power.

1. the cylinders
   the fuel rail
2. the intake manifold
   the turbo

In a direct injection engine, the fuel injectors spray right into the cylinders, usually during the final part of the compression stage, boosting power and fuel efficiency.

1. two
   four
2. eight
   none

A rotary or Wankel engine doesn't have cylinders, because their design is fundamentally different from a traditional engine.

1. four-stroke
   two-stroke
2. interference
   non-interference

An interference engine has a design where the pistons and valves occupy the same spots inside the cylinders, just not at the same time, unless the timing belt breaks.