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No or least current in spark plug wire - Activa Honda Motorcycles

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  • Honda Master
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Possible that the trigger volatge to the coil is low-- check the input to give a pulsating +12 to the coil.
If this voltage is good enough the coil by itself can be faulty.
Or the HT wires- from the coil to the plugs can be weak/open.

Posted on Sep 17, 2010

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Posted on Jan 02, 2017

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1995 jetta 3 spark goes into the distributor from the coil, but does not reach the plugs


Do you mean you can take off the coil to dist. high tension cable at the distributor end, and you get spark from the coil? If the spark is strong and blue, then the only thing between that and the spark plug wire end is the distributor cap and rotor. Both are high wear items, good to replace them every hundred thousand or two. Miles, that is.

An ignition system has a primary and a secondary circuit. The secondary circuit is the high voltage coming out of the coil to the top of the distributor, where it touches the top of the rotor, and the current is passed from the center of the rotor to the tip, where it whisks by the metal tip on the dist. cap where a spark plug wire connects. So a continuous current from the coil to the individual spark plug wires, and to the plugs. It's only an instant, but it's a current flow from origination in the coil to ground. When the current reaches the bottom of the spark plug, it has to jump a gap to find a ground. When it jumps, it conveniently makes a spark.

Feb 08, 2015 | Cars & Trucks

1 Answer

Free wiring diagrams


There is not really a negative primary coil wire per se BUT ...............

The 2006 carbureted models have a three wire 83B connector with #3 wire being BE/O Front coil wire carrying the primary current supplied from the #2 W/BK wire to and through the front coil primary circuit to the ECM (#2 wire being W/BK and supplying current from the Stop Run Switch to both front and rear coil primary circuits at the same time) and the #1 wire being Y/BE Rear coil wire carrying primary current supplied through the W/BK wire to and through the rear primary wire #1 to the ECM. So, current comes to both coil segments (front and rear) simultaneously, passing both primary windings by two separate wires to ground through/in the ECM until the ECM opens each circuit independently of the other and thereby collapse the current in each primary winding into each secondary winding at the appropriate time to fire the respective spark plug.

The 2006 EFI models have a four wire 83B connector with wire "A" being Y/GN Power supply wire; wire "B" being GY/BE and the ION sense wire to the ECM; wire "C" being Y/BE Rear primary coil segment and Wire "D" being BE/O Front primary coil segment. Again current comes to the coil through the Y/GN "A" wire and passes through the front primary circuit to the ECM via the BE/O wire until the ECM opens the circuit which collapses the front coil primary current into the front coil secondary circuit inducing a high voltage current which then bridges the gap and fires the front spark plug and through the rear coil segment primary circuit to the ECM via the Y/BE wire until the ECM opens the circuit which collapses the rear primary current into the rear secondary circuit inducing a high voltage current which then bridges the gap and fires the rear cylinder spark plug.

I hope this answers your question whichever 2006 Softail model you have.

Jul 11, 2014 | Harley Davidson FXSTB Night Train...

1 Answer

Machine is setup correctly in flux setting, i cannot get an arc to strike,, what is the problem?


Are you sure your flux meter is working properly? Please translate.
Ignition system. Spark plug. Spark plug wire. Coil (roll of wire). Magnet (on flywheel). Magnetic pickup (coil).
Magnet flys past coil which induces an electrical current into the coil and, at speedy exit/disconnect, coil induces a voltage surge which causes a spark in the end of the spark plug. Voltage is transferred from the coil to the plug via a spark plug wire. Current is induced from the moving magnet to the coil via close proximity of the moving magnet to the coil (changing magnetic flux).

Jun 03, 2011 | Garden

1 Answer

2001 hyundai sonata starts up then cuts off while sitting still we have replaced the fuel pump fuel line and fuel filter..car stopped while driving


Hello and welcome to FixYa!

Please do check the spark plugs as well. If the spark plugs have big gaps, corroded, covered with carbon or just faulty, it can cause fuel cut off. This is caused by fuel flooding and there's not enough current to burn the fuel. Do check the spark plugs and replace if necessary.

Another thing that can cause this issue is when the plug wires are worn out. If the plug wires are worn out, the current tends to jump which may cause current supply irregularities. I strongly suggest that you check and replace the plugs wires too.

Hope this helps and thank you for using FixYa! Have a good one!

May 10, 2011 | Hyundai Sonata Cars & Trucks

1 Answer

How do you change plugs and wires 1997 sebring


Spark Plugs A typical spark plug consists of a metal shell surrounding a ceramic insulator. A metal electrode extends downward through the center of the insulator and protrudes a small distance. Located at the end of the plug and attached to the side of the outer metal shell is the side electrode. The side electrode bends in at a 90( angle so that its tip is just past and parallel to the tip of the center electrode. The distance between these two electrodes (measured in thousandths of an inch or hundredths of a millimeter) is called the spark plug gap. The spark plug does not produce a spark but instead provides a gap across which the current can arc. The coil produces anywhere from 20,000 to 50,000 volts (depending on the type and application) which travels through the wires to the spark plugs. The current passes along the center electrode and jumps the gap to the side electrode, and in doing so, ignites the air/fuel mixture in the combustion chamber. Fig. 3: Cross-section of a spark plug tccs1045.gif
Use a Spark Plug socket and 12" extension with a ratchet. Pull the boot of the spark plug wire off with a spark plug wire boot puller available from your local parts or tool store. Unscrew each spark plug and replace the wire by pulling the boots off both ends, one at the spark plug end and the other at the coil pack or distributor cap. Do only one cylinder at a time to avoid confusion. Put the appropriate length spark plug wire from the package on to the coil pack or distributor at one end and screw the new spark plug in and attach the other end of the spark plug wire to the spark plug. If you do it one cylinder at a time, it should be easy. Good luck on this repair.

Oct 07, 2010 | 1997 Chrysler Sebring

1 Answer

How to change spark plugs in 2.5 misubishi in a 1998 sebring


Remove boot to spark plug using a boot puller. Unscrew spark plugs using a spark plug socket, extension, and ratchet.
Do them one at a time to avoid confusion. Installation is the reverse of the removal.
--- FIRING ORDERS NOTE: To avoid confusion, remove and tag the spark plug wires one at a time, for replacement. If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason, it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired. Fig. 1: 2.0L and 2.4L Engines Firing Order: 1-3-4-2 Distributorless Ignition System 90902g01.gif
Fig. 2: 2.5L Engine Firing Order: 1-2-3-4-5-6 Distributor Rotation: Counterclockwise 90902g02.gif
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Jul 19, 2010 | 1998 Mitsubishi Galant

2 Answers

Do not know where to connect hour meter wire to the spark plug


One wire is the flexible silicone rubber wire from the spark plug to the ignition coil. You don't have to strip or connect the other wire, just wrap it around the spark plug wire a few turns.The current from the spark ignition will induce a signal into the hour meter that the meter uses to determine when the motor is on or off. I hope this helps and good luck.1b05a64.jpg

Oct 28, 2009 | 2006 kawasaki KX 250 F

1 Answer

I nee to wire my 1972 kawasaki 100 2-stroke motorcycle so it run


From the dynamo the current generated to induction coil armed with the appropriate capacitor, for relaying the current it via the distributor,(for timing of spark) high voltage/current, and distributed to each plug/Cylinder & called CDI ( Capacitor Discharge Ignition)..........seems the most practical solution I could come up with .
Hope this 1 sparks, fire's &/or a( no pun intended) thread.....................sodeep

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2 Answers

1990 Subaru Legacy shorted out the ignition coil. I replaced it and in less than 1 mile,it shorted out the new one.


Subaru engines (including Legacy and engines of many other automobiles, GM, etc.) have returned to so-called wasted spark ignition systems since advent of the electronic distributor-less ignition (having been used historically in early engines with magneto ignitions). With this approach, the ignition systems are less expensive and usually quite reliable. At the same time, however, a shorted spark plug (cracked or carbon clogged, etc.) (or bad ignition spark plug wire) grounds both the ignition spark and the false spark being used. This means that it also grounds the corresponding respective ignition spark of the other 180 degree out of phase cylinder (that uses the same the same coil because the spark current is connected to the spark plugs of two cylinders). Since such a defect allows more current to flow in the spark coil to two plugs when the resistance of the spark plug gap disappears due to a cracked plug, etc, it seems likely to hasten coil burn out if the spark plug/plug wire defect is not corrected before installing the new spark coil.

To explain further, wasted spark means that when a cylinder is ready to fire, it gets a spark to its spark plug while part of the spark (from the same coil and current) as a sort of copy is also sent to another cyclinder at the same time but when the piston in that cylinder is exhausting its ignited gases 180 degrees out of phase from when its spark is needed. When the second cylinder is ready to fire and receives its "spark, the first cyclinder the also receivesa "wasted" spark "copy" of the one needed by the second cylinder. Economy is achieved in manufacture because otherwise electronics would have to turn on and off four different spark coils to distribute four different sparks as needed to the four cylinders. With wasted sparks (which are cheap), because the spark current of one coil is connected (internally in the ignition coil unit) to two cylinders that are in the same position but 180 degrees out of phase in firing, the system can turn on and off two spark coils twice as fast with half the electronics and fire two cylinders that are 180 degrees out of phase. A four cylinder engine thus uses only two coils, a six cylinder engine, three coils, etc., in a wasted spark system.

Jul 27, 2008 | Subaru Legacy Cars & Trucks

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