Question about RTO 47cc / 49cc Pocket Dirt Bike Atv Ignition Coil 2-stroke

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I have a black wire from a ignition coil not plugged in where does it go?

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  • 186 Answers

On the spark plug.if that is not it then it might be a earth cable that just gets bolted to the frame of your bike

Posted on Oct 15, 2010

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1 Answer

No spark from coil to distrubuter


Disconnect the ignition coil output wire at the distributor cap.
Connect a spark plug to the end of the ignition coil output wire which you just disconnected.
Connect a ground wire to the threaded portion of the spark plug.
Disconnect the ignition coil ground wire from the negative terminal on the coil (Green Wire).
Connect one end of a ground wire to the ignition coil negative terminal.
Turn the ignition switch to the ON position.
Tap the other end of the ignition coil ground wire jumper on an good grounding point (for example the battery negative terminal) and look for sparks at the spark plug that correspond to the frequency of your tapping of the ground wire.
If you have a good spark at the spark plug, the ignition coil is good.
If you don't get a good spark, check for approximately 12 VDC from the coil positive terminal (black wire) to ground with the ignition switch in the ON position. You should also get approximately 12 VDC from the coil negative terminal (Green wire) to ground
Ignition Coil Resistance Check

In addition to the test above, you may elect to perform an ignition coil resistance check as confirmation of the coil's condition.

Check the ignition coil primary coil resistance by connecting an ohmmeter between the positive (Black wire) and negative (Green wire) terminals on the coil. The resistance should be 0.4 to 0.6 ohms.
Check the ignition coil secondary coil resistance by connecting an ohmmeter between the coil output terminal and the ignition coil negative terminal. The resistance should be 5000 to 7200 ohms.

You may have a bad coil or bad ground or wire connection

Jan 23, 2017 | Cars & Trucks

1 Answer

James what can I do to check coils on ,2003 accord lx 2.4


Not James, but maybe I can help: Under the dash in the fuse/relay box is the ignition coil relay. This sends battery voltage on the black/white wire to all four coils. With key in on, all 4 coils should have power to them on this black/white wire. If no power, check fuse #2, a 15 amp fuse which sends power to the ignition coil relay, and on to the coils when the relay is energized by the ecu/pcm. Only thing else to cause spark is when the ecu/pcm sends a signal to the coil's Ignition Control Module (housed inside each coil assembly), which controls the primary circuit (the black/white wire), and causes high voltage to the spark plugs.

So check the black/white wire to the coils. If power there with key in on, check for spark at a spark plug when cranking the engine over. If power to coils but no spark, possibly a crankshaft position sensor or cam position sensor giving a bad signal to the ecu/pcm. Good luck.

Sep 01, 2015 | Cars & Trucks

2 Answers

Spark plugs are black on my Harley


Hi Anonymous, and the usual suspects are:
1. Plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discarged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at "BOTH" ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. If your bike has a CKP sensor you must leave both plugs in
head and check for spark with a 3rd plug. Good luck and have nice day.

Apr 01, 2013 | 2003 Harley Davidson FXSTDI Softail Deuce

2 Answers

TVS scooty pep plus not starting, changed with new new battery & new spark plug - no spark coming (I have tested the spark plug connected outside touching scooty metal body & start-kicking)


Possibly a bad ignition coil. Check the connections at the ignition coil,make sure they are clean and tight, If so,..then most likely either A: the ignition coil is bad,or B: the pickup on the stator rotor is bad or the rotor could be rusted on the raised portion where the pickup get its signal.

Aug 29, 2012 | 2010 TVS Scooty Pep

1 Answer

I have a first generation 83 yamaha venture 1200 v 4 i have power to only 3 of the ignition coils the fourth coil has tested good by taking #3 lead and plugging into #4 coil. any ideas on what part to...


Okay...when you say power to the coil...I think you mean getting a spark on the plug wire?

All 4 coils should have battery voltage on the red/white wire to each coil. The second wire returns to the igniter (TCI....ignition black box) and it switches that wire off and on to ground to cause the coils to fire. If all 4 test good...then
Check out the TCI, the large box mounted on the coil rack that the connectors are clean.
Now remove the 6 wire connector from the TCI...and test the resistance of the pickup coils which are located under the left crankcase cover beside the stator coil.
you will be testing the following wire pairs on the 6 wire connector
Orange-Black
White/Red-Black
Gray-Black
White/Green-Black
You should see at ambient engine temp...about 110 ohms resistance on all 4 pairs.....if one pair is showing no resistance...you need to test at the lower 5 wire connector just below the seat left side with the same 5 colors....unhook and test....if still having one bad test...pickup coils may be bad.

Apr 10, 2011 | Yamaha Royal Star Venture Motorcycles

1 Answer

Only getting fire out of one coil


okay...these are general to Yamaha igniter systems...
so bike is in neutral...shows neutral, kill switch on...
Test each plug cap with a new spark plug...if one or more getting no spark....
Unhook the pickup coil harness and test the resistance (the P U coils located in left front crankcase cover with stator. If resistance tests out fine, ensure the connector is clean and connect.
Now test that both ignition coil packs primary and secondary resistances are within spec.
Verify the ignition coil packs are getting battery voltage to the primary terminal (often a red/white wire).
Ensure the igniter (the ignition black box) also called TCI is getting battery voltage on its supply.
Ensure all connectors clean to TCI.
The only other issue may be the interlocks are trying to shut down ignition....typically a black/white wire from the igniter goes to sidestand relay, tip over switch....both shut down ignition by grounding the control side of the TCI...could be they are partially grounding allowing minimal ignition..

Apr 02, 2011 | Yamaha YX 600 Radian Motorcycles

2 Answers

How do I replace the ignition coil in my 2002 ford taurus



Removal & Installation

3.0L (VIN S) Engine

  1. Disconnect the negative battery cable.
  2. Unplug the engine control sensor wiring connectors from the ignition coil and the radio ignition interference capacitor.
  3. Tag and disconnect the spark plug wires from the coil by squeezing the locking tabs, then twist the tab and pull upwards.
  4. Unfasten the four ignition coil retainers and remove the coil and the coil ground wire the radio ignition interference capacitor. Save the capacitor and coil ground wire for re-installation of the coil assembly.
  5. Wipe the coil towers with a clean cloth dampened with soap and water. Remove any soap film and dry with compressed air. Inspect the coil for cracks, carbon tracking, dirt or damage and replace as necessary.

    0996b43f802333d8.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Ignition coil assembly mounting-3.0L DOHC engines


To install:
  1. Place the coil, capacitor and the coil ground wire onto its mounting location on the right hand valve cover.
  2. Install the coil assembly retainers and tighten to 45-61 inch lbs. (5-7 Nm)..
  3. Apply dielectric compound D7AZ-19A331-A or its equivalent to the spark plug wire boots.
  4. Attach the spark plug wires to their proper terminals on the coil and make sure the boots are firmly seated so that the locking tabs engage.
  5. Attach the engine control wiring connectors to the ignition coil and the radio ignition interference capacitor.
  6. Connect the negative battery cable, start the vehicle and check for proper operation.

Dec 19, 2010 | 2002 Ford Taurus

2 Answers

Where is the ignition control module on an 1989 totota camry


Toyota Camry 1983-1996 Repair Guide Ignition Module - REMOVAL & INSTALLATION

External
All engines, except the 2S-ELC, have an external igniter.
  1. Turn the ignition key to the OFF position. Disconnect the negative battery cable.
  2. Separate the wiring harness connections.
  3. Unbolt the igniter.
  4. Loosen the nut holding the wire lead onto the coil.
  5. Tag and disconnect the wire lead.
  6. Lift the igniter off its mount.

To install:
  1. Mount the igniter to the bracket.
  2. Attach the wire lead to the coil.
  3. Connect the harness.
  4. Connect the negative battery cable. Reset any digital equipment such as radio memory and the clock if necessary.

Internal
REMOVING IGNITER WITH DISTRIBUTOR
See Figure 1
The internal igniter is only applicable to 2S-ELC engine Camry models. All other engines are equipped with an external igniter assembly.
Review the complete service procedure before this repair. Note position, color of wire and routing of all internal distributor assembly wiring.
  1. Disconnect the cable from the negative battery terminal.
  2. Remove the number one spark plug. Place a finger over the spark plug hole and rotate the crankshaft clockwise to top dead center. When there is pressure felt on the finger at the spark plug hole, this will be top dead center of the compression stroke on number one cylinder. If not, repeat the procedure. Install the number one spark plug.
  3. Mark the position of the distributor flange in relation to the camshaft housing. Remove the IIA distributor assembly.
  4. Remove the distributor cap with the wires attached, and remove the packing. Mark the position of the rotor relative to the housing and pull the rotor straight up and off the shaft. The distributor cap is held to the housing with three retaining screws.
  5. Remove the ignition coil dust cover.
  6. Remove the two nuts and spring washers and disconnect the four wires from the terminals on the side of the ignition coil. The wires are color coded yellow, blue, brown and red.
  7. Remove the four retaining screws and remove the ignition coil and packing.
  8. Remove the nuts and disconnect the pink, white and black wires from the igniter terminals. Remove the two igniter retaining screws and remove the igniter.

To install:
  1. Attach the new igniter with the two retaining screws. Connect the pink, black and white wires to their respective terminals and install the nuts. Make sure that the pick-up coil wires are secured in their clips and that there is slack in the wires.
  2. Install the ignition coil and attach it with the four retaining screws.
  3. Connect the four ignition coil wires to their respective terminals and install the two nuts and spring washers.
  4. Install the coil dust cover and push the rotor onto the shaft.
  5. Place the distributor cap and wires into position. Install and tighten the retaining screws.
  6. Install the distributor assembly and connect the negative battery cable.
  7. Connect a tachometer and timing light to the engine and adjust the ignition timing.

71948a0.jpg

Fig. 1: Make sure you remember where the colored wires attach for installation-2S-ELC engine
  1. Reset any digital equipment such as radio memory and the clock if necessary.

REMOVING IGNITER WITHOUT REMOVING DISTRIBUTOR
  1. Remove the distributor cap, rotor and di-electric insulator covers. Disconnect the red and yellow wires from the coil and the pink, white and black wires from the igniter.
  2. Remove the igniter. It may be necessary to mark and rotate the distributor to gain access to the igniter retaining screws. The timing should be checked after the distributor is returned to the mark.

To install:
  1. Install the new igniter using the two new retaining screws.
  2. Twist the pick-up coil wires together, install the white wire first then pink and black wires to their original locations. Make sure the wires do not touch the housing generator or advance plate.
  3. Route the red and yellow wires from the igniter so they do not contact moving parts. Connect the red wire to the right coil terminal (with the brown wire) and the yellow wire to the left terminal (with the blue wire). Replace the covers, rotor and cap.
  4. Connect a tachometer and timing light to the engine and adjust the ignition timing.

Hope this helped (remember comment and rated this).

Apr 05, 2010 | 1989 Toyota Camry

1 Answer

Ignition coil problem


THE PROBLEM IS RESOLVE, IT WAS THE GROUND WIRE FROM THE FIREWALL TO THE INTAKE MANIFOLD, ITS A BLACK 10 GAUGE BLACK WIRE FOR GROUND, IT WAS LOOSE.

Feb 11, 2009 | 1999 Daewoo Nubira

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