Sport & Outdoor – Others

Experienced athletes share their insights in answering this question:
If it has a carb and is a two stroke check the gap on your spark plug and make sure your main jet is adjusted right. but it sounds like your sled is running to rich. look at the end of your spark plug, if it is black you are running to rick but if it is kind of a white color it is to lean. it should be pretty close to tan.

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. :

Wet Fouling, 2-Stroke

The appearance will be the same as a wet-fouled 4-stroke plug. Causes include the wrong plug (too cold), excessive idling, improper fuel:oil mix ratio or carburetor adjustment set too rich.

Found in many passenger vehicles, hot spark plugs have more insulation to transfer the heat slowly, which keeps the temperature high enough to burn off carbon deposits and avoid premature fouling. This helps allow for more time between spark plug changes.
Flooded Engine

A sled can flood if the engine is over-primed or over-choked. One way to correct this problem is to simply give it time. Let any extra fuel evaporate for about 20 minutes before restarting. You can also attempt to dry the spark plugs on your own if you don`t want to wait.

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.
Since platinum is harder, it holds its sharp edge much longer than a conventional spark plug, up to 100,000 miles. Longevity is a key advantage of platinum spark plugs. Another advantage of platinum spark plugs is that they run a little hotter, which burns deposits off the spark plug better and helps prevent fouling.
Yes, you can clean an old, fouled plug. However, it`s best to opt for a spark plug replacement in most cases. That`s because an old spark plug won`t perform as well as a new spark plug. After all, electricity discharges best from sharp edges that only a new plug can have.
Champion plugs are hotter the higher the number, colder the lower the number. Starting with part # RCJ7Y (heat range 7), a colder plug would be # RCJ6Y (heat range 6), a hotter plug would be # RCJ8Y (heat range 8).
The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.
When there isn`t enough snow, this can also cause overheating. Such overheating usually occurs at the beginning of the snow season. Other common causes of overheating include faulty wiring or a clogged exhaust pipe, all of which can cause problems for a sled.
Many times, darting is caused by having too much ski pressure. Because there is so much pressure being forced onto the skis, the runners will bite and “dart” at any random time. You can adjust your snowmobile`s suspension so that there is not as much ski pressure.
Overflowing engine oil can also lead to bent engine rods and collapsed valve pipes. Spark plug fouling – Excess oil can find its way into spark plugs, which will then need to be replaced.
Black, dry soot on the electrodes and insulator tip indicates a carbon-fouled plug. This can be caused by a dirty air filter, excessive driving at low speeds, too rich of a fuel/air mixture or idling your vehicle for too long.
Indeed, iridium spark plugs are generally considered more durable than other kinds of spark plugs (like platinum ones). Nonetheless, they`re not invincible and can still foul and corrode. Oil, fuel, or carbon can foul iridium spark plugs just like platinum.
In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in good condition.
What causes tire blowouts? According to Tire Rack, many blowouts are caused by underinflated tires. When the air pressure in a tire is too low, the tire may flex beyond its limits, overheats and cause the rubber to lose its bond to the tire`s internal fabric and steel cord reinforcement.
Gathering your hair into a loose, messy bun before bed is the best way to make your blowout last overnight. Find a hair tie that won`t create a crease—Scrunchies work well, as do claw-style hair clips. You can also wrap your hair in a silk turban to make your blowout last longer.
If the PCV valve is stuck open, the excess vapors and oil droplets can quickly foul the spark plugs.
Is it safe to spray WD-40 in a spark plug hole? Yes. WD40 is a water displacer, not a very good lubricant, and a bit of a solvent. If you need to spray anything int he cyclinder, it should be a penetrant like PB Blaster or even some oil.
Clean the spark plug thoroughly to avoid problems later. Remember, if a plug is fouling, its usually a result of engine side factors or incorrect heat range selection. If, after cleaning, a plug shows unusual signs of wear or doesn`t come clean, its time to replace it.
A hotter plug does what is says, it runs hotter. This will not give any more power and neither will a too cold plug. Because the spark plug resides in the combustion chamber, it`s influenced by what happens there.
The copper core does transfer a significant amount of heat. Reeves emphasized that the heat range rating of a copper-core spark plug and an iridium plug will be the same and that it is the tip (overall) length of the center ceramic that determines any plug`s actual heat range.
Iridium Spark Plugs – Service Life

Denso Iridium spark plugs use a much thinner electrode than even the NGK. Given how long the NGK electrodes last you could argue the NGK are over engineered and reducing their diameter would have no effect on their service life.

Is that hot? The heat range of a spark plug is indicated by the number in the plug`s identification sequence. On NGK spark plugs, the lower the number the hotter the plug (higher numbers are colder). Thus, your NGK BR9ES is colder than a BR8ES.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

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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My 98 skidoo mxz 500 keeps fouling spark plugs. why does it do this?
ANSWER : If it has a carb and is a two stroke check the gap on your spark plug and make sure your main jet is adjusted right. but it sounds like your sled is running to rich. look at the end of your spark plug, if it is black you are running to rick but if it is kind of a white color it is to lean. it should be pretty close to tan.

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I just purchased this Yamaha boat w/Twin MR-1 140hp motors, less than 100hrs (60 prox)and the starboard motor only reached 8000rpm on a 10000 redline spec (the port motor reaches 10000rpm. I have replaced the spark plugs immediatly and now the motor reaches 9500rpm. When the plugs were replaced the plug wire top of the plugs had a black powder residue (like graphite)and #1 & 4 plug electrode end were black minimal soot and #2 & #3 had a white color residue on the ceramic.

Any suggestions to attain the full 10000rpm?

A Yamaha dealer is 100 miles, so I would like to fix myself if possible. Thanks

ANSWER : I never rec’d an answer…..I WANT A REFUND!

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Spark plug gap setting for 92 benz 300e 4matic
ANSWER : Look at sticker unda da hood

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What is the spark plug gap size for a 2000 kia sephia?
ANSWER : The gap size is .044 for a Platinum tipped plug in a 2000 Kia Sephia but if You are using E3 Plugs, You have NO Gap to set. It’s a 360 degree firing plug that You install and forget about.

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No spark to spark plug
ANSWER : Try checking the coil

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