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Ignition coil no spark

Carnt find replacment part

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No spark one plug f725 john deere

Did you replace the IGNITION coil or the "PULSING coil"? There are two different types on that engine. The ignition coil makes the high-voltage spark, the pulsing coil is a sensor that tells the ignition control module when to tell the ignition coil to make that spark. The pulsing coil is pretty inexpensive on eBay.

If you change both the ignition coil and the pulsing coil and the problem still persists, you may need to replace the ignition control module.

Unfortunately, they don't make these things simple any more, or easy to troubleshoot.

Jul 30, 2014 | John Deere Seat For F710 F725 F735 Riding...

3 Answers

Engine stop

If theres no spark from the spark plugs then you would have to replace them?

Jul 12, 2008 | 1993 Toyota Corolla

1 Answer

I have a broken spark plug wire. Can these be replaced?


Yes, the spark plug wire can be replaced, but you have to buy the ignition coil as the spark plug wire is hard wired into the ignition coil.

If the metal spark plug connector has disconnected from the spark plug wire, the connector can be replaced, but if the spark plug wire has been cut you'll need to replace the ignition coil.

Nov 29, 2013 | Homelite 200 mph 400 CFM Gas Blower...

1 Answer

Cant find plugs on a 3.7 6 cylinder 2 wheel drive dakota please help

3.7L Engines
Each individual spark plug is located under each ignition coil. Each individual ignition coil must be removed to gain access to each spark plug. Refer to Ignition Coil Removal/Installation. Prior to removing spark plug, spray compressed air around base of ignition coil at cylinder head. This will help prevent foreign material from entering combustion chamber.

  1. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert.
  2. Inspect spark plug condition.
To install:
  1. Start the spark plug into the cylinder head by hand to avoid cross threading.
  2. Before installing coil(s), check condition of coil o-ring and replace as necessary. To aid in coil installation, apply silicone to coil o-ring.
  3. Tighten spark plugs to 27 Nm (20 ft. lbs.) torque.
  4. Install ignition coil(s). Refer to Ignition Coil Removal/Installation.

Sep 21, 2013 | Cars & Trucks

1 Answer

1998 gsxr 600 no spark


Verifying the Spark

Remove the upper and side fairings, using a 4 mm Allen wrench to unscrew the fairing bolts. Unlock and remove the rider's seat, using the ignition key.

Pull the fuel lines off of the fuel valve under the left side of the fuel tank. Unscrew the pair of bolts from the base of the fuel tank, using a 10 mm socket. Pull the fuel tank to the rear of the motorcycle to remove it..


Pull the cables off of the two spark plugs on the right side of the motor. The spark plug cable furthest to the right is connected to the right ignition coil, while the second cable is connected to the left ignition coil. Unscrew the spark plugs from the motor, using a spark plug socket. Plug the ignition cables back onto the removed spark plugs.

Hold the spark plugs against the motor and start the motorcycle for a few seconds. Observe the gap between the electrode at the tip of both spark plugs for spark. Ideally, the spark should have a bright, blue appearance.

Replace the spark plugs with new DR8E spark plugs, if no spark is present. Repeat the test. Replace the corresponding ignition coil if there is still no spark present at the spark plugs' electrodes.

Proceed to Section 2 for further diagnosis, or reassemble the motorcycle following the reverse method of removal.
Testing the Windings

Remove the suspect ignition coil from the motorcycle's frame, using a 10 mm socket. Unplug the coil's cables from the remaining spark plug in the motor and from the spark plug removed in Section 1. Unplug the motorcycle's wiring harness connector from the back of the ignition coil. Remove the remaining ignition coil, if needed, using the same procedure.

Set your multimeter to read an R X 1 resistance range, using the meter's settings dial.

Measure the ignition coil's primary winding at the terminal that connects to the motorcycle's wiring harness, using your multimeter. Touch the meter's red probe to the coil's positive (+) terminal and the black probe to the coil's negative (-) terminal. Take note of the measurement on the meter's display. Replace the ignition coil if its primary winding has a resistance measurement less than 3 ohms or greater than 5 ohms.

Set your multimeter to read an R X 1,000 resistance range, using the meter's settings dial.

Measure the ignition coil's spark plug cables, using your multimeter. Touch the meter's probes to the metal connectors within the cable's end caps. Take note of the resistance measurement on the meter's display, indicated in ohms. Replace the ignition coil if the cables have a resistance measurement less than 25,000 ohms or greater than 45,000 ohms.

Reinstall the ignition coil if its primary winding and spark plug cables are within the specified resistance range, using the reverse method of removal. Replace the entire ignition coil if either the primary winding or the spark plug cables are within specification, as the ignition coil and its cables are a combined assembly.

Reassemble the motorcycle following the reverse method of removal. Connect the left ignition coil's cables to the pair of spark plugs in the middle of the motor's cylinder (#2 and #3), while the right coil's cable connect to the spark plugs on the sides of the cylinder (#1 and #4).

Jan 11, 2013 | 1998 Suzuki GSX-R 600

1 Answer

My sons derbi senda extream starts for about 20 mins then wont start and carnt bump start but have a spark dont no what to do 08 reg. 50 cc.

Hi, N_dallison and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
Derbi Senda 50cc got spark compression and fuel wont run
The Ultimate GY6 Starter Ignition Troubleshooting Tutorial

Mar 07, 2011 | Derbi Senda SM 125 4T 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

How do you replace the spark plugs on a 1998 2.7 Intrepid?

Always remove the ignition coil assembly by grasping at the spark plug boot, turning the assembly 1/2 turn and pulling straight back in a steady motion.
  • Prior to removing the spark plug, spray compressed air around the coil area and spark plug.
  • Remove electrical connector from ignition coil.
On 3.5L engines, it is necessary to loosen the screws by alternating back and forth. Do not lose the spacers under the coil when loosening the screws.
  • Remove 2 fasteners from ignition coil.
  • Remove ignition coil assembly.
  • Remove the spark plug using a quality socket with a rubber or foam insert.
  • Inspect the spark plug condition.
Always remove the ignition coil assembly by grasping at the spark plug boot, turning the assembly 1/2 turn and pulling straight back in a steady motion.
  • To avoid cross threading, start the spark plug into the cylinder head by hand.
  • 3.5L engines tighten spark plugs to 28 N·m (20 ft. lbs.) torque, 2.7L engine tighten spark plugs to 17.6 N·m (13 ft. lbs.).
  • Install ignition coil assembly onto spark plug.
  • Install coil screws and tighten: 2.7L engine to 6.2 N·m (55 in. lbs.), 3.5L engines to 6.7 N·m (60 in. lbs.).
  • Connect the electrical connector.

Aug 27, 2010 | 1996 Dodge Intrepid

1 Answer

Put new engine in carnt get a spark at plug sym jet 50cc euro 2004 model

There may be several things causing this fault (your sure the plug is fine?)

The ignition systems on these bikes are pretty basic. The Stator plate provides power to the CDI unit, which builds up until the pulser tells it to send the power to the coil and produce the spark

1. is there voltage from the stator plate (under flywheel) - you can test with a basic multimeter.

2. is the pulser sending a pulse - also can be tested with basic multimeter

3. is the CDI blown? - swap out to test

4. Is the Coil blown? - can be tested with multimeter

it is also very possible that you may have got a couple of wires mixed up when you switched engines.

Jul 04, 2009 | 2004 Sym Husky 125

1 Answer

The blower stalled after running for is getting gas,i cleaned the carb+ replaced the gas filter.the air cleaner is clean and i replaced the spark plug.i seem to be getting a very weak spark.any...

Hello . If you have a weak spark it could be the ignition coil that needs adjustment or a bad ignition coil . To find the ignition coil simply follow the spark plug wire . To readjust the coil get a piece of paper , loose the bolts on the coil and put the paper between the coil and the flywheel (higher part of the flywheel or magneto) tight the bolts and remove the paper .
Check for spark . If still a weak spark just replace the ignition coil .
Hope this help.

Jun 30, 2009 | Husqvarna Garden

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