12

From a device called a coil. The coil is basically a transformer which takes in the 12vdc voltage from the battery and upconverts it to around 40k vdc (depending on the ignition system). Here is a breakdown of what a basic coil looks like from the inside: The battery input feeds the primary coil. This is a thicker wire with a number of windings. The ...


5

Spark plug cables can suffer from a few different things: cumulative heat stress from being near the engine cumulative electrical stress from the high voltages they carry chafing against nearby things Normally, I inspect them whenever I replace the plugs. Look for cracks or breaks in the outside insulator, damage to the boot, and if you have a multi-meter ...


5

There isn't any performance to be gained from spark plug wires, just better build quality, which gives you not a better spark, but rather maintains an appropriate spark for more miles/years before their performance degrades to the point of needing replacement. You cannot tell build quality by reading the side of a box, it is a manufacturer reputation more ...


5

Here's an article that explains spark plug cables. It had some interesting information that I hadn't really thought of. That said, I'd say the largest difference in consumer grade spark plug cables will be on durability. It will probably have a bit of better electrical traits (e.g. resistance), but I don't imagine you get a large gap in spark performance ...


5

It is not necessary to change the wires but it's a good idea. Here's the reason. If your spark plugs have been in the engine too long the component at the end of the plug get's oxidized over time from having such high voltage run across it to jump a gap and create a spark. As these electrodes are consumed by this process the gap becomes wider and wider and ...


5

Visible sparks are not ok. I'm not familiar with your particular plug wires, but that normally means the insulation or wire connector is damaged. If you see a spark, at a minimum it means that you're not getting a full spark on the actual plug because you're losing energy. It can also lead to premature failure of your coils because they are now trying to ...


5

I am pretty sure the spark plug is broken but I am not sure That's almost certainly the issue. Replace the spark plug and try again, if the problem is fixed, you're all set. If not, then there are more things to check: The ignition coil, on this vehicle I believe it's located above the spark plug. Try swapping two of them and see if the problem follows. ...


3

Nope... If you don't have 'coil on plug signal probe' you can measure the coil induced magnetic field in conjunction with for example the ignitor's trigger signal. Although, this can only be done if your scope is sensitive enough. Most COP are either 3 or 4 wire. One will be your 12V, ground (return), ignition trigger and ECM signal feedback (optional). ...


3

From many years of selling both 'standard' and 'high-performance' HT lead sets, here's my advice: If you're replacing your lead set because it's simply time to do so, buy the cheap ones: they're perfectly ok for most 'normal' applications. If you're replacing them because the last ones gave trouble after less than expected mileage, go for the #2 mid-range ...


3

As @tlhIngan said, the benefit of good wires isn't so much the quality of the spark when they are new, but the longevity of the wires. Spark plug wires don't lead an easy life, they are exposed to high temperatures and high voltages and a lot of strain and bending during plug changes and other work around the wires. As they start to fail they will become ...


2

Changing the plugs is just fine. Coils are not maintenance. They are replaced as they fail. You might find it more beneficial to find the maintenance schedule for this vehicle and catch up on the routine maintenance that has also been neglected such as transmission fluid change, brake fluid change, coolant system flush and timing belt replacement (if it has ...


1

Effectively speaking, some automotive parts slowly wear or fail in a way that is predictable. For instance, we know that oil filters collect debris over time, so it's easy to predict when you will need to replace those parts based on how old they are or how many miles you have driven. For these parts, even if they seem to be working okay right now, you can ...


1

Please make it clear: disconnected or loose? Disconnected meant a permanent misfire, which may not cause much damage to the engine, except possibly faster wear on the bore. Loose on the thread may damage the thread which may need repair, this can be done in-situ but if the damage is too much then it may possibly mean a new cylinder head.


1

In general no. Poor spark would likely make the engine run horribly, misfiring noticeably. But badly routed cables / poorly suppressed cables can interfere with the electrical signals from various sensors triggering odd problems. That said, for a dramatic increase in fuel consumption my first concern would be the lambda probe, followed by the MAF sensor. ...


1

Unlikely, Although technically very cheap spark plug wires could cause a weak spark, it would typically not effect combustion efficiency by enough to notice a drop in fuel economy. Typically if you were having significant fuel economy issues, and it was caused by the spark plug wires, I would expect you to have significant miss-firing. If the engine still ...


1

Indirectly. Cheap wires have higher resistance in the wire, which leads to weaker spark at the plug. Weaker spark means the combustion is not optimized, thus leading to less engine power and you have to give more throttle to compensate for less power.


1

Really sounds like bad wires to me. The arcing means that there is an easier place for the spark to jump to ground than at the spark plug where it should be happening. Maybe the wires you are replacing with are defective? Some possible reasons for arcing: - A plug gap that is too large. If the spark can't jump the gap in the plug, it will find another path ...


1

The plug wires all tend to have the same age and have suffered the same conditions. As the insulation gets dirty, then it becomes more susceptible to moisture and subsequent breakdown. Whenever I have had one breakdown I have always replaced the complete set. Replacing one was always a "get you home" measure.


1

In this case it turned out to be the MAF Sensor, which I cleaned with mass air flow sensor cleaner. Being a newbie to this, I used this video to help me figure out how to do it to my Lancer. My understanding from what I've read is that this sort of problem (engine stalling when accelerating) can be any of these problems: MAF Sensor is dirty MAF Sensor is ...


1

Maybe you should reconsider the "upgrade" part of your sentence. For a commuter bike it will make no special difference to upgrade only the ignition so i believe you would be better of to target quality instead of performance. Try to replace them with your stock parts or at least try to find the exact same part in Bosch or Denso make. For your no2 question ...


1

No. The reason your other friend incorrectly said that is because if a charged plug was touching a ground (the frame or whatever) that's a short over a device designed to produce a high voltage, which, obviously, could ruin it. However, the plugs cable ends are "highly" female in that there is plenty of rubber to prevent them from accidentally touching a ...


1

I'm going to answer this more generically than what you're asking, but hopefully it will help. In general, bring whatever you think you'll need. If that need is a sparkplug and you can fit it in your kit, bring a sparkplug. If you think you'll need a kitchen sink and can fit in your kit, bring the sink. When you said this is totally an opinion based ...


1

I've had the connector that mates to the top of the plug fail before. This caused an intermittent misfire and general poor running that weren't fixed by new plugs -- then I looked at the ends of the cables and saw why. This was in a 90s car so things might have changed since then (it was the last petrol car I did much work on).


1

The most common type of spark plug cables is carbon core wires. In this kind the carbon eventually burns away and the wires can no longer transmit a good signal. If you don't have carbon wires, the main thing that could go wrong would just be a hole in the insulation or boot which could be caused by any number of things. Test your wires' resistance with a ...


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