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“My Jet Ski Won’t Start” – Troubleshooting a Jet Ski that Won`t Start
Jet Ski wont start? Let’s get you back in the water! Jet skis are machines that are created to run fast on water surfaces. They have a very good design and quality mechanics, but they still endure lots of battering and high speed abuse. To insure the ability to use your jet ski for a long period of time you must take a proper care and maintain it. So what happens when your Jet Ski wont start for you?
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People usually make mistakes and forget to store their jet skis in a proper way. After being used all day in the water, the jet skis are often stored in places where the weather conditions aren’t favorable. In order to work well, jet skis should not be left outside because the sun, wind or rain will lessen the performance of your watercraft. When you use your jet ski, cruising down the sea or ocean, it will accumulate salt, dirt and grime. All of them can affect the overall performance of the Jet Ski. You must remove all of those elements that have accumulated inside the machine, in order to lengthen the life and the optimum performance of the Jet Ski.
For good maintenance and to prevent damage to your Jet Ski, it is highly recommendable to wash the Jet Ski with fresh water after each use. Then it should be dried on fresh air and stored properly. The sunlight also damages the machine, so you should always cover it with some kind of protection.
Just like cars and other vehicles, jet skis should be regularly inspected by mechanics. They will take proper maintenance of the mechanical parts of the Jet Ski, and will clean out all dirt and other substances that have accumulated inside the engine of the Jet Ski.
Troubleshooting of a jet ski that won`t start can be broken down into a few other groups. If the Jet Ski does not start and cannot run at all, then the engine ignition is the first place where you should look at. There might be a problem with the fuel system or with the carburetion, especially if the Jet Ski has not ran in a while.
TIP: Does your PWC require a unique key or custom ignition modification that has malfunctioned? Is your safety switch/key properly releasing the safety mechanism? These are a quick and easy first tier reason why your Jet Ski wont start. Now that these have been checked, let’s move on.
First, check out the spark plugs. Take them out and take a closer look on them to see whether they are dry or wet. If the spark plugs are dry and their color is light brown – the fueling is functioning correctly. In case if one of the spark plugs is wet, that means that the ignition or the carburetor has a problem or that the cylinder is not working properly.
By using the starter, spin and turn the engine over with the plugs inserted in the plug boots. Lay the plugs on the metal, unpainted part of the engine. The plugs should spark as the engine is spinning. If the plugs are black and wet, or if they look weak, then it is probably time for them to get replaced. If one of the spark plugs is not sparking, then probably the ignition coil is damaged. If both of the spark plugs are looking good, but are still very wet – then there is a carburetion problem.
Decide whether the problem occurs always or if it occurs below or above approximately three thousand revolutions per minute (rpm). Below three thousand rpm it’s the circuit that is being controlled by the low speed jet. Above three thousand rpm is the main jet. After you remove the jets, take them up on the light to check whether you are able to see through them.
You should also check and verify that you do not have some kind of leak in the engine. To do that, move the seat back for a few inches in order to keep a fresh air inside the engine compartment. If the air gets quickly contaminated with exhaust that means that the jut ski will work all right at the start, but it will get worse in short time. It is very important to lower the acceleration and speed in the diaphragm carbs. If the carbs are not getting gas, then you should remove the pump line of the fuel and spin the engine. As the engine spins, there should be gas coming out of the fuel pump lines. If the pump looks like it is not working properly, check out the pump vacuum to see whether there is some kind of leak.
Jet skis are machines that are designed to be used by a single person. Like with any other machine, if there is a problem, you should look for the cause of it. The most common problem that occurs with these personal watercrafts is when their engine does not start.
Here is what you need to do – first of all, check whether that the engine switch is positioned to the “right”. The Jet Ski engine cannot start if the interlock switch is in the “left” position. Next, check if the fuel valve is set to “on” before you try starting the Jet Ski. Pull it all the way out and press the start button. If the level of the fuel is low, the Jet Ski can start but it might stop soon or it will not be able to make turns. That is why you should always fill in the tank to the top.
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Remove the spark plugs from the engine compartment, after previously you disconnect the spark plug wires. Use a clean cloth or rag to clean the end of the spark plugs. If they are very dirty, then you should replace them with new ones. Other thing to do is to open the battery compartment and check out whether there are cables which are loosely connected. Tighten up all the cables with the wrench.
Finally, take a close examination of the jet pump which is located in the back of the watercraft. Remove all the debris which may be on the pump. Debris often cause engine to overheat, so the jet pump should be cleaned regularly. If by now you are still stumped and can’t figure it out then the answer is simple; Bring your PWC over to a licensed professional like JSPG who has trained techs on hand and professional diagnostic equipment.
I hope this article helps to better equip you for how to follow up and take action the next time your Jet Ski wont start up. As always – ride safe!
Water riding vehicles provide tremendous enjoyment for owners and renters alike. However, jet ski sales reps would bring great benefit to their customers by sharing the proper maintenance guidelines for watercraft units purchased by those seeking the feel of speed on the lakes. Jet ski parts will eventually wear out and cause problems for the owner if these strong, but delicate items are not properly cared for. Jet ski repair shops may charge hefty prices for ongoing engine failures due to ignorance and/or neglect of engine care from jet ski owners. Proper repairs, along with preventive maintenance, such as a winterize procedure for the water vehicle, are a must for the owner to enjoy a long life of his or her water ride.
With jet ski repairs being potentially expensive, many watercraft owners will investigate DIY blogs and videos in an attempt to fix any of the jet ski parts found on their lake or ocean jet units. A jet ski owner may think that watercraft repairs cannot be more difficult than the automobile repairs the car owner handles with the assistance of blogs and internet videos. Although jet ski parts have some similarities to automobile parts, there tend to be some complexities with jet ski repairs that the average handyman may be surprised to find when rebuilding that jet ski engine which looked so easy in the beginning. The smaller jet ski engine size can be deceiving when comparing the unit to an automobile engine. Below are 5 potential solutions for jet ski repairs that the novice or experienced owner may need to address in the lifetime of their watercraft.
Replacing Jet Ski Parts
1. Replacing the Fuel Lines:
These particular jet ski parts may be overlooked in the initial diagnosis of engine failure. Deteriorated fuel lines can leave debris that may clog up the carburetor which enables a slow, inefficient jet ski engine performance. Some minor homework is in order when replacing fuel lines. Various jet ski models will require a variety of fuel line sizes. There is no one-size-fits-all for lake or ocean jet ski items. For improved throttle response, fuel line return restrictors can be installed between the carburetor and the fuel tank. Using a fuel stabilizer to help continuously keep your fuel system operating at peak performance can prevent costly repairs to the fuel system in the future.
2. Replacing the Jet Pump:
This device is located on the bottom of lake jets. Pumps contain an impeller which is the vital part of accelerating water pressure before it discharges through the rear nozzle of jet ski units. This leads to increased engine control, therefore increasing performance. Some symptoms of a worn jet pump may include vibrating while the watercraft unit is in idle mode. Some owners include the rebuilding of the jet pump every 4 to 5 years as part of their jet ski repair/maintenance procedures. Also included in the pump system are wear rings. The impeller is encased in the wear ring. Constant debris that continues to chip away at these vital parts of the jet pump may have negative effects on engine performance. Maintenance of the jet pump system is one procedure that jet ski owners and even jet ski sales shops recommend as part of a winterize procedure for the vehicle during cold off-season days.
3. Replacing the Crankshaft:
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Jet ski engine problems may be instigated by rusted crankshafts. Users involved in jet ski rebuilds seem to slightly favor welded based crankshafts. The welds help hold the pins in place. The pins are the key elements that hold the flywheel in place, which is the counterweight of the crankshaft. Some owners believe that crankshafts welded to the cylinders will prevent twisting of the unit. The opinion varies among owners and jet ski repair shop merchants about the superiority of welded crankshafts.
4. Changing the Battery:
The battery is often overlooked as a potential source of problems on many vehicles. Car owners often do not investigate the battery unless the car engine refuses to turn over and start. Engine diagnosis on jet skis often run into the same situations of having the battery overlooked as a potential source of problems. A battery may lose its charge over time if it is left out in the cold over a long period of time. Removing the battery is often recommended as one way to help winterize the watercraft. Batteries should be stored in a garage or other environments that protect it from harsh cold and winds. “Smart” chargers help batteries maintain proper usage levels during the offseason. For extra protection, covering of the battery terminals with rubber or even cardboard will prevent arcing as well as help the unit to maintain its consistency over months of non-use. A battery charger will ensure the unit is ready to go when it’s time to pull the vehicle out of the garage for summertime rides on the water.
5. Proper Sealing:
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Seals are vital for engine performance. Seals are another group of items that jet ski owners are not aware of when the purchase was made from the smiling jet ski sales associate. The associate may not mention that worn out seals throughout the engine may allow an overflow of oil in undesired areas. Gaskets are the most common forms of seals for jet skis. Because engine parts are often not perfectly matched, proper gasket materials such as forms of treated paper, or metal will provide the filler for joints that need matching. Metal gaskets, although more expensive, are recommended in many cases as metal is able to withstand outside pressure better than its paper counterpart. Checking for proper seals can be included in the water vehicle’s winterize procedure. Some jet ski parts that require gaskets are crankshaft ends, exhausts, flywheel covers and oil pumps. No matter which parts need connecting, proper seals are a must for the jet ski engine to run to its full potential and lifespan.
Buying a Jet Ski for the First Time
When a jet ski newbie is looking online for jet ski sales shops, the investigation should be just as intense at looking at the care and maintenance of jet skis. Maintenance is often overlooked by many until the later stages on most motorized items we own. Thoughts of fixing or repairs don’t enter in until funny noises and/or loss of high-end performance begins. If a used jet ski model is an option, a thorough education and investigation of the jet ski parts is a must. The jet ski sales rep should be able to tell the potential buyer about proper care for various jet ski models. If the sales rep is not knowledgeable about technical repairs, he or she should have someone close at hand to give the customer proper repair guidance when requested.
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One important tip for those who use their jet ski in salt water is to thoroughly clean the jet ski after each and every trip in salt water. This will help to clean out the motor and pumps since salt water is highly corrosive and will damage the motor quicker than just running it in fresh water.
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The 5 items listed above are not inclusive of all jet ski repairs, but they are pretty common to problems encountered with the vehicles. The five repair solutions, as well as the recommended procedures to winterize, will ensure a longer life of the water units so more time can be spent in the summer riding on the currents and less time and money spent in the garage fixing jet skis.