Sport & Outdoor – Others

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Tow likely causesspark plug wires clogged and/or shorted the statordo you have spark and fuel?keep us posted

How to Identify and Resolve Common Issues ?

We offer a diverse range of insights on identifying and resolving common problems in sports. Our sources encompass academic articles, blog posts, and personal essays shared by seasoned athletes. :

After periods of wet and windy weather, condensation and moisture can develop on your car`s spark plugs, and other areas of the engine. If this moisture is ignored, permanent damage can occur to your car – leading to expensive repairs.
Soft, black, sooty dry deposits on plug indicate carbon fouling. Carbon fouling is an indication of a rich air-fuel mixture, weak ignition, or improper heat range (too cold). Carbon deposits are conductive and can create a path for spark plug misfire.
If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.
Appearance & Symptoms: Dry fouling (top) appears as sooty, black build-up. Wet fouling (bottom) has a wet, sometimes oily appearance. Both conditions can create poor starting and misfiring.
Water intrusion is an unlikely, and therefore, overlooked cause of ignition coil damage. In some vehicles, A/C condensation can build up and drip directly onto ignition coils, filling up spark plug holes with water.
Causes of a carbon-fouled spark plug include a dirty air filter, excessive driving at low speeds, too rich of a fuel/air mixture, dirty fuel injectors or idling your vehicle for too long.
Soot is a by-product of combustion and is present in all used engine oils. Soot is generated as a result of incomplete fuel combustion in engines. When the air and fuel mixture that powers the engine fails to burn completely there is leftover matter – partially burned fuel which is generally known as soot.
A Bad Crankshaft Position Sensor

The crankshaft position sensor monitors the position and rotational speeds of the crankshaft. Without the crank sensor, the engine control module (ECM) wouldn`t know when to fire the fuel injectors and ignite the spark plugs.

Bad Sensors

One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.

To fix a flooded engine, you basically want to get the air to fuel ratio back to its usual balance. You can first try to simply let the excess fuel evaporate. Open your hood and wait a couple minutes before you try to start your car again. And when you do start it back up, make sure you aren`t pushing on the gas pedal.
The relationship between crank and cam timing events can also cause no spark, especially on Chrysler products. On these vehicles, the PCM won`t trigger the ignition coil if the cam and crank are out-of-sync.
What kills ignition coils is location; being mounted in one of the hottest, most vibration prone and dirtiest parts of the engine. Modern ignition coils are typically located between two camshafts on the valve cover and exposed to dirt and oil.
Abnormally high or abnormally low ambient temperatures to which a solenoid is exposed for an extended time may cause a solenoid to burn out. High Temperature. Coil insulation may be damaged and one layer of wire may short to the next layer. A heat shield or baffle will give some protection against radiated heat.
If spark plugs are installed over the recommended torque, the plugs will be subject to high stress loads, which can trigger a wide range of issues. The most visible effect will be damage to the plug itself, in particular deformation to the metal housing, which can lead to thread damage and breakage.
Continuing to drive on worn out or damaged spark plugs can ultimately cause engine damage, so don`t put it off.
This method involves looking at the base of the spark plug insulator (white part of the plug) for a slight coloring on the insulator just above where the insulator comes through the steel case. If the mixture is too lean, it will leave no color, while a rich mixture will cause the fuel ring to become more prominent.
Incomplete combustion occurs and soot is formed when there is an overabundance of fuel (both diesel fuel and lube oil), insufficient residence time in the combustion zone, and/or non-availability of sufficient oxidants. Over-fueling is the primary cause of black smoke from the exhaust of a heavy duty diesel engine.
The soot particles ignite at a temperature of about 600 – 650°C, which is higher than the normal exhaust temperatures of Diesel engines (360°C – 400°C).
MEECO`S RED DEVIL Liquid Soot Remover – 16 oz. A Fuel Oil Additive for Oil Burning Furnaces, Pressure Washers, Steam Cleaners and other Diesel Engines. Removes moisture and sludge deposits. A special blend of chemical compounds, carefully formulated to attack existing soot formations and prevent further soot buildup.
Danger Level: Medium. If your exhaust pipe is emitting black smoke, it`s likely because the fuel/air mixture is too rich. In order to combust properly, your engine needs a precise mixture of fuel and air. The mixture is “rich” when it has too much fuel or too little air.
External Input Triggers

A sensor can be triggered from an external source, such as a photocell. An external input can also be used to enable when time or encoder triggering is active. For example, as long as a target is detected by a photocell, the external input would enable internal triggering of scans.

If an oxygen sensor or mass airflow sensor is failing, it could give incorrect data to your engine`s computer, causing the misfire. When a vacuum line is broken, it can cause a fuel-injected motor to misfire.
Sensors that are installed or attached to the engine/transmission, or to other external areas of the vehicle like tires, are more susceptible to damage due to the number of elements they can encounter on a daily basis. Exposure to extreme heat and cold, as well as rain and debris are enemies to many parts of a car.
The O2 sensor will not cause the no start. The no start can be caused by the fuel pump or the ignition system. You should check the engine for spark and fuel pressure, when it is not turning on to help narrow the problem down. The ignition system may be the coil, module, or pick up in the distributor.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Splashed in a deep mud puddle YESTERDAY
engine died
won’t restart
changed spark plug
Gumout in carburater
Kawasaki 350 Prairie
ANSWER : Tow likely causesspark plug wires clogged and/or shorted the statordo you have spark and fuel?keep us posted

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I have a 2004 60 hp yamaha 2 stroke outboard engine that doesn’t start or run well. Once warm and in the water it will idle in nuetral and also in gear. It accelerates in neutral but will die or lack power if I increase throttle while in gear. Engine will somtimes get to top speed but often while running at top speed engine will start to slow rapidly. Engine has full range of operationout when out of the water where there is no load on engine but is still difficult to cold start. Before these recent problems the engine sat up for several months and I had to change the impeller and spark plugs. Spark plugs fire, cylinders have proper pressure of 100, 100, and 110. I cleaned some fuel lines and filters and got new gas.
ANSWER : Every sympton you are describing here can be attributed to fuel starvation due to blocked jets and or water in carbs, when your engine dies does it die with dry plugs, or wet oily ones?

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Turned poulan pro 42 inch 18.5 HP Briggs and Stratton mower off after 1hr of use to move a board I was about to mow over. Tried to restart it but it just backfires. Removed spark plug and it looked fouled. Cleaned it up but when looking at spark it is orange in color. Bought new spark plug and now get white spark. Installed new spark plug and it still backfires. Plug is wet with gas. Any suggestions?
ANSWER : Check the valve clearances and especially the inlet valve to make sure that it is not riding (staying slightly open) B&S are notorious for valve problems as most of their motors do not have a valve adjustment on them, the valves stems have to be filed/ground down to get a clearance. Somewhere between 0.010 to 0.015″ is near enough for the inlets and about 0.005″ more for the exhaust. It is not critical.

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Spark plug wire boot grounding out on coil, 96 outback 2.5 automatic, just put new spark plug wires, new spark plugs, and new coil on. ran great for two weeks, now spark is jumping out of boot at coil on one wire, put old coil back on and still does it in the same spot. replaced wires again, and still does it in the same spot. seems to do it only under a load. Is my new spark plug on that cylinder bad? Does the coil need some insulation under it? It is the coil that sits right on top of the motor. Any ideas? thanks.
ANSWER : Sparks are high voltage, and will always follow the path of least resistance. If you can visibly see a spark (whether in a lighted area, or in the dark), that means either that a plug wire (or coil wire) is open (non conductive), or your have a carbon track on the surface where the spark can be seen, but most likely you have BOTH problems!

If you have an ohmmeter, check the resistance of each wire involved, particularly spark plug wires … which means you must be able to connect to both ends of each wire at the same, and hopefully, FLEX those wires, to be sure they don’t have a break inside that is intermittent (comes and goes)!

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LX 188. Engine suddenly dies. The fluel in the bowel of the fuel filter is empty. If I crank the engine the filter becomes dry and is collapsing some but the engine does not start. When I remove the supply line from the fuel pump to the carberator and crank the enginge there is a strong stream of gas being pumped out. I tap on the carberator ??? is the float is hung not allowing fuel to enter. Cranking the engine with the line off refills the bowel of the gas filter. Reattache line to the carberator===engine starts. Ran perfect for 20minutes then suddenly died. Repeated all the above and engine again started. What to do to fix this? Thanks
ANSWER : Debrie inside the needle and seat area which has to be cleaned out with carburetor cleaner and compressed air

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2005 4 stroke yamaha 150 550hrs. normally use every week but due to surgery not used for 10weeks. Just before I went down I changed internal fuel filter, and zincs in motor. finally put in sunday. motor started fine left dock hit the power and started to come up on plane then stuttered and died. changed the external fuel/water seperator pump up the primer and started up again. with in a minute died down again. limped back to dock checked fuel filter and plug wire connections. pumped up primer and left dock went right onto plane for maybe 150yds then coughed and died. I could pump up primer and it would run but then die out. the fuel filter at the front of the engine would run dry until I pumped it up again. If it were a car I would suspect a leak in a fuel line but I can’t find any sign of one.
before we launched I put 10 gallons of fresh fuel in and added another bottle of ethanol stabilizer (CRC brand)
what proceedure should I follow to isolate the problem? I am a fairly competent mechanic as far as cars and trucks go. I don’t really want to have to take it to a marine mechanic.
ANSWER : This is going to be the fuel pump is not pumping any fuel. The primer is acting as a fuel pump. When you prime it, it gives the engine enough fuel to run for a little bit. But as soon as the fuel runs out, the engine is dying. So this is going to be a bad fuel pump.

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Have a 2004 kawasaki 3010 desiel mule that has worked fine for years with regular maint. then yesterday we started it as usual with the glow plug lights indicator and it ran for a few minutes until we went to take of and it just died. period. we tried to check thing out and finally found a bad fuse in the glow plug fuse holder, changed it with the same size and it ran the rest of the time we needed it and then again today we started and ran it same as yesterday and it worked fine for about 30 to 45 minutes and will out in the field it just quite. i immediately started searching for signs of heat or melting of wire or other signs and found none. the fuse that goes into this circuit is a 5 amp and all i had was a 20 so i said lets see what happens. it immediately blow the fuse without any out ward sign of problems.??????
ANSWER : Replace the glow plugs one or more are shorted

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