What test can be performed to detect a leak after fueling a gasoline-powered boat Quizlet

Which is recommended water-skiing safety practice? Holding up a ski after falling.

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Which of the following is recommended as part of the annual maintenance?
What is recommended maintenance for an inboard boat?
What is recommended for annual maintenance on a gasoline powered boat?

Which of the following is recommended as part of the annual maintenance?

Recommended as part of the annual maintenance for a gasoline powered boat: Examination of thru-hull fittings for signs of leakage or corrosion.

What are some boating safety precautions?

10 Essential Boat Safety Tips

Be prepared with a boat safety kit.
Bring the proper life jackets.
Check the weather beforehand.
Don’t overload the boat with people or equipment.
Check for harmful fumes.
Use common sense on the water.
Follow proper anchoring procedures.
Follow proper docking procedures.

Which of the following is a safe practice when fishing or hunting from a canoe or kayak?

Wear a PFD at all times while on the water. Wearable PFDs come in a variety of styles, including camouflage vests and float coats. Remember that cold water can be a killer. When fishing or hunting on cold water, dress in several layers under your PFD.

What is recommended maintenance for an inboard boat?

Change oil every 100 hours Most inboard boats will require regular oil changes. Consult your user manual to find out how regular oil changes should be, but a decent guideline to follow would be to do so every 100 hours of engine usage. You can learn how to do this yourself or take the boat to your local dealer.

What is recommended for annual maintenance on a gasoline powered boat?

Replace all engine fluids, oil filters and engine-fuel filters (if not done before winter storage). Inspect and clean spark plugs. Replace per the engine-manufacturer maintenance schedule. Inspect grease fittings, and replace if necessary; add grease.

What safety recommendations should always be followed by recreational boat operators?

12 Safety Tips for Recreational Boaters

Make sure everyone wears a life jacket.
Use the right kind of life jackets for the situation.
Never drink alcohol and go boating.
Take a boating safety course.
Put down the cell phone.
Drive at a safe speed and follow all boating safety and navigational rules.

Why is boater safety important?

Boating safety education is important because it helps reduce personal injury and property damage associated with the use of recreational boats. Boaters can keep themselves and their crew safe by learning about responsible boat operation, etiquette, and the rules of the waterways.

What are the safety rules for water skiing?

Only water ski during the daytime. Always wear a U.S. Coast Guard-approved life jacket. Always have an observer sitting at the back of the boat to watch the skier and to communicate with the boat operator. Immediately leave the tow rope when you fall.

How do you not fall off your skis in the water?

If the skier knows he or she is going to fall, it is best to fall backward to avoid falling onto the skis. Once you are in the water, you should hold one ski up about halfway out of the water. This will allow the observer on your boat to see you and will make you more visible to other boats on the water.

What are the best tips for skiing safety?

If the skier wants to return to the dock or the boat, the skier should pat one hand on his or her head. After a fall, a skier should always signal to the observer that he or she is okay by holding both arms together above the head. Using these signals will help to ensure the safety of the skier and of others. Ski in groups of three.

How much water do you need for balancing skis?

Be aware of minimum water depths. For water skiing, a minimum of 1.50m depth is required and when skiing barefoot a minimum of 1.50m to 1.80m is a must. 4. Get Your Body In Shape For Balancing Skis

By Mike Bumbeck, automedia.com
Difficulty: Moderate
Estimated time: 120 minutes

An internal combustion engine makes power by first drawing air and fuel into the combustion chamber. Next is the compression of the mixture and the addition of a spark. The harnessing of the resulting contained explosion is ultimately what powers the car. As an engine gets on in miles, the containment of this power can be lost due to piston ring, valve or cylinder wall wear. Engine performance will suffer as a result.

Pressure reading
A common test of an engine’s ability to compress the air-fuel mixture is an engine compression test. A pressure gauge is connected in place of the spark plug. The engine is then cranked to create a pressure reading. A compression test is a good way to check the engine’s ability to create pressure. The gauge reads the positive pressure created by the cylinder.

Loss reading
An engine leakdown test is a compression test in reverse. Instead of measuring the engine’s ability to create pressure, compressed air is introduced into the cylinder through the spark plug hole. One gauge on the tester measures the pressure of the air entering the cylinder and the other measures the percentage of the air escaping (or leaking) from the cylinder. The loss percentage will indicate the condition of the cylinder and overall condition of the engine.

Top dead center
Before sending air into the engine, the cylinder being tested must be placed at Top Dead Center (TDC). The piston must be at the top of its travel. The intake and exhaust valves must be closed. When the air is compressed into the cylinder, the leakdown tester will measure any loss of air escaping past valves or piston rings. If the cylinder is not at TDC, air escaping past an open valve will give a false reading.

Reading results
No engine will have perfect sealing with 0 percent loss. Five to 10 percent loss indicates an engine in great to good running order. An engine between 10 and 20 percent can still run OK, but it’ll be time to keep an eye (or ear) on things. Above 20 percent loss and it may be time for a teardown and rebuild. Thirty percent? Major problems. The percent of leakage should also be consistent across the cylinders. Any great differences indicate a problem in that cylinder.

Hearing problems
Beyond getting an overall picture of engine condition, the engine leakdown test is an excellent way to pinpoint where problems are before tearing down the engine. Listening for where the air is escaping by ear can isolate the problem.

Intake valve : Air whistling out of the intake, carburetor or throttle body indicates a leak at the intake valve.
Exhaust valve : Air heard hissing out of the tailpipe, turbocharger or exhaust manifold means an exhaust valve leak.
Piston rings : Whistling or hissing out of the PCV valve, oil filler cap hole or dipstick tube means the air is pushing past the rings. Suspect ring or cylinder wall wear.
Head gasket : Air bubbles in engine coolant seen at the radiator filler cap could mean air escaping into the coolant past the head gasket.
Cracked cylinder head : Bubbles in coolant or coolant being pushed up out of the radiator neck can also indicate cracks in the cylinder head or cylinder walls.

Tools, supplies and instructions
You will need a compressed air source, a leakdown gauge kit, spark plug socket, basic hand tools, vehicle service manual and a notepad to record results.

Step 1 : Remove the spark plugs and rotate the engine to put the cylinder to be tested at TDC. Tip: Insert a long screwdriver or extension into the spark plug hole and turn the engine by hand with a socket on the crankshaft. When the screwdriver stops rising or falling, you’re at TDC. Don’t turn the engine backward if TDC is missed. Go around again. In a four-cylinder engine, cylinders one and four and two and three are at TDC at the same time.

Step 2 : Figure out which spark plug adapter works best and connect the gauge into the hole. Put the vehicle in gear and set the parking brake to prevent the engine from turning when air is compressed into the cylinder. Start with the regulator turned counterclockwise to zero the incoming pressure. Connect compressed air. Turn the regulator clockwise to pressurize air into the cylinder.

Step 3 : Record leakage percentage for the cylinder. Remove the oil dipstick, radiator cap and oil filler cap. Open the throttle body or remove the air cleaner. Listen and watch. Wherever air is escaping will indicate where the problem is. Disconnect the gauge and move to the next cylinder.