Platinum and iridium spark plugs have better longevity, their lifespan varies from 40,000 to 60,000 miles. You may also hear the engine pop as it loses and regains timing. Lv 7. Over time, the gap between the central electrode and the ground electrode decreases. Your engine misfires. However, a misfire is often the result of at least one worn spark plug. Join Yahoo Answers and get 100 points today. The basic design and task of the spark plug has changed little over the last 100 years. In many cases, a simple fix will do the trick and your car will operate again as it should. Mine went awry recently, it was fairly simple re-bushing them and setting it right, but mine's a '66 Chevy, not a Buick. The RPM's do not seem any higher than usual. So when to replace spark plugs? Pay attention to the fuel consumption of your vehicle. Bad spark plug symptoms may be subtle, or incredibly noticeable. The basic design and task of the spark plug has changed little over the last 100 years. If you can see the spark, that means you have a bad wire. The spark plugs are an important part of the engine and it … If your spark plugs don’t produce the spark needed to get the vehicle moving, then you’re going nowhere. Engine surging or engine hesitation is an obvious symptom of the bad spark plug as well. A bad spark plug can cause engine misfiring which can also set on the engine light. I am taking it in to the garage in a few days as soon as I get some money together. In general, copper spark plugs require replacement every 20,000 miles. They sit on top of the combustion chamber and ignite the air/fuel mixture and start the power stroke of the engine. Have fun. I have had transmission fluid changes, coolant flushes, oil changes and all. 2) Bad Ignition Coils/Wires. Relevance. If any spark plugs other than what is recommended by the manufacturer is used, it can cause the knocking sound you hear. It seems like engine executes your commands with delay and the engine performance is hampered. If any spark plugs other than what is recommended by the manufacturer is used, it can cause the knocking sound you hear. Decreased acceleration. Lv 7. Could be a worn out distributor. Loose or cracked spark plugs cause ticking sound in engine. Loss of engine power. Bad spark plug symptoms may be subtle, or incredibly noticeable. Bad spark plug symptoms may be subtle, or incredibly noticeable. It does not seem to be losing power or anything like that. Reduced Engine Power. Symptoms of bad spark plugs can include: The spark plugs are important components of an engine that produce electric sparks to ignite the fuel-air mixture in the engine cylinders for producing energy. This is a common problem after DIY tune-ups. Bad spark plugs can cause many problems with your Jeep Wrangler. If you have trouble starting your vehicle, it could be a sign your spark plugs are worn. Bad Spark Plugs. There are tons of different types of spark plugs (iridium, platinum, standard, pre-gapped, 4 grounded etc.,) but there still are some telltale visual signs that tell you of a bad spark plug (or a poorly running cylinder ). The spark plug is responsible for providing the spark that ignites the fuel-air mixture inside the cylinder of the engine. Don't want to be ripped off. Bad spark plug. #11 – Car Engine hesitation; And the last symptoms of bad spark plug wires on the list here is engine hesitation. Engine hesitating or cutting out. Now you know how to tell if a spark plug is bad. bad ignition coil (coil pack) You get the idea. Favorite Answer. Getting the most out of your vehicle's engine, you should do your best to ensure driving safety. Hard to Start. 3) Bad Fuel Economy It may cause serious damage, so we recommend you to replace spark plugs as fast as possible. Would bad spark plugs cause this sound (with video)? So much so that it’s actually a better idea to look at the plugs first. You'll need it, and I'll sell it cheap. A check engine light can also point to either, as can difficulty starting the engine. Just trying to rule out some issues before I take it in. I'd look at that first, especially if you have not recently done anything else to your carbs aside from ride the bike. If yes, then you have to tighten the plug. The vehicle-encompassing, jittery sound will also cause your vehicle to vibrate. But those signs could also point to a faulty ignition coil. Directions for auto repair in Orange County Ca. These mechanical problems must be repaired or the problem may continue to repeat itself. Sometimes, the torquing of the plug is not correct. Bad spark plugs can cause many problems with your Dodge Ram. But diagnosing which one’s the problem can be tricky. Bad spark plugs can cause many problems with your Dodge Ram. 5. This problem decreases engine power and might be dangerous in massive traffic on the road. But, just trying to rule out some issues. Driving with fouled or bad spark plugs can cause a host of problems for your engine. Try to remember that spark plugs are the smallest component of your car that has huge importance. Either way, you need good ignition coils in order to ensure the engine starts up fine. Everytime i accelerate it knocks, but this only occurs during acceleration and after the trucks been driven for a while. Spark Plug is a regular Serviceable component. In some vehicles, the spark plug and ignition coil are connected together with wires, while other cars will just have the ignition coil positioned above the spark plug without the need for wires. 5. 1 decade ago. Your car’s exhaust system is … Bad spark plugs will not seriously damage an engine, but if you have a catalytic converter, they can damage it and even cause a blockage in it that would prevent your engine from developing full power. I seem to have trouble getting them to stay on at the distributor cap, so you might check to see if there all the way on at the cap. 0 0. eliminator_3. It depends on the type of spark plug and materials it is made from. To know for sure if a fouled or damaged spark plug is the cause of your boat’s engine issues, you’ll need to examine the spark plugs. In some cases, the spark plugs of a car will fail even within its intended lifecycle. The reason of this problem may be that the spark plug fails to produce the spark. Leaky, or clogged, fuel injectors or poorly tuned carburetors are often the cause. When it happens your vehicle makes sharp jerks first and then slows down. I've put higher octane gases in my truck and have replaced the EGR valve already. 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