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No fire to plug need to test coil

Need to know how to test coil no fire to plug

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Lawmowers have a coil mounted along side the flywheel. You have to remove pull cord assembly, then remove flywheel nut. now the coil is exposed. most of the time rust on the flywheel is the only problem. Clean with 120 grit sandpaper. Loosen the coil screws so the coil can move in and out, then palce a match-pak carboard flap between the flywheel and the coil and snug down the screws. you should be all set. Now make certain to check the flywheel key to see if it is bent or broken. These keys are made of soft metal to protect the crankshaft from being damaged. So replace the key if damaged or broken. This should solve your problem. To test the coil you either need a ampmeter, or you can pull the cord while holding sparkplug wire 1/2 inch from engine bolt and look fo spark while pulling the rope. Good luck. Don't forget to remove the matchbook from the flywheel after setting gap, which is .010 thousands of an inch.

Posted on Mar 29, 2014


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I have a Polaris sportsman 500 4x4. will crank but no fire to plug. tested coil with test light...put test light on hot side of battery to top of coil, wire removed. light comes on as if a dead short.

From coil, you will get continuous on, as the timing light sees no break between pulses.
This means coil is working.
Coil feeds distributor which feeds to each plug in sequence.
To test plug-leads, you can put the pickup sensor of timing light over each plug-lead - no need to remove plug-leads from plugs.
Whichever does not fire the strobe light is a dud cable, if any.
You can also pull off a plug-lead and hold it near the engine block.
Use thick dry cloth or gloves or you could get a shocking surprise!!
If spark jumps when cranking then lead is ok.
Do for all leads.
Maybe distributor if mechanical points or electronic ignition is faulty.

Nov 20, 2017 | Cars & Trucks

1 Answer

My 95 GMC Sonoma 2.2L has fire to the coils but not to the sparkplugs i have replaced the coils and crankshaft sensor does any know what the problem could be

What do you mean, you got fire at the coils? What testing have you done? What about the plug wires?
If you can remove one coil from ignition module, use a test lite at the primary terminals where the coil plugs into ignition module, crank the engine, does the lite pulse? If nothing, have to check voltage and ground to ignition module, if that checks out, suspect the ignition module.

Jul 08, 2017 | GMC Cars & Trucks

1 Answer

It mayI have no fire going to the coil or from the coil to the plugs

Have you checked the wiring, the spark @ plug, Power to the coil???

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getting fire from coil but not to plugs - CarGurus > Questions > Dodge > Ram 1500

CarGurusJun 12, 2013 - 2000 dodge ram 1500 4x4 not getting fire changed distributor cap, coil, pickup ignition, rotor, plugs, plug wires 2 answers. ... 1994 dodge 5.9 just shut off and wont start back up there is no spark or fire from coil or plugs. ... 94 dodge van 318 eng will not start new plugs new crank ...

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Jan 27, 2016 | Cars & Trucks

1 Answer

How can i test the coils on my 60mariner

if your coils is breaking down you will know it under a load most problem with a coil is cracks and jumps fire to a ground .. . best way to see this is run motor in the dark see if you see fire jumping from coils or plug wires

Mar 04, 2013 | Boating

1 Answer

Kawasaki zxr 750 Bad Coils or CDI??

Rarely will both coils fail. Try disconnecting blk wire with yellow stripe from cdi. Check fire again, if fire is good you !likely have a bad ign switch. If there is still no fire, you will need to test trigger, stater. Also remember the can position senor. Test denser to specs. If cambsenser can't tell cdi where number 1 piston is, there will be no fire. Let me know how it works out for you.

Aug 09, 2017 | kawasaki ZXR 750 Motorcycles

1 Answer

1942 - 45 -wla motorcycle ingiton coil failer, whats the test procedure?

Ok, right out of the book.

Equipment: fully charged battery, complete working distributor, spark plug, jumper wires, and coil with plug wires to be tested. With the jumper wires, connect the battery positive (+) terminal to the coil forward terminal, connect the coil's rear terminal to the breaker's terminal and connect the battery negative (-) terminal to the breaker base (turn the breaker shaft to open the points to prevent burning the points). Attach a spark plug to one of the plug wires and hold the other plug wire against the plug's metal base. Spin the distributor shaft by hand. If all is well, the the plug will fire stongly. If it doesn not fire, each plug wire will need to be tested separately. Run an additional jumper from the coil body to the plug's metal base. Connect the plug to one wire, spin the timer shaft, watch for fire. Switch to the other plug wire and test. Which ever wire does not fire, remove it and clean it at the bottom or replace it, Clear the wire's coil hole of obstructions (possibly tar is filling the bottom), reseat it and retest it.

Good luck

Aug 03, 2010 | 1993 Harley Davidson FLSTF Fat boy

1 Answer

I have a 86 4WD Hardbody Z24 engine- It has 2 coils and 8 plugs even thogh its a 4 cyl. I think intake and exhaust plugs. One side is not firing. Changed coil and it didnt fix. How can I test and figure...

distributor is probably jumping fire unplug one coil wire and see if it starts if so hook back up while running and should shut down when you plug it back in if so its the cap.let me know if anymore help

May 17, 2010 | 1986 Nissan Pickup 4WD 1986

1 Answer

Number one cyl on coil pack not firing, all others are, codes reads misfire on 1 cyl should i replace the coil pack and how do you test the pack

Check the spark plug first. then if the plug is good you wil need a digital ohm meter to test the coil pack. if you need to know how to remove the coil pack let me know, to test put on ohms should not have more than 2 1/2 ohms restance betweent coil lead to coil connector. If you test the coil pack on both sides of the pack and get a reading then the coil is bad, if it does not read then you haave a bad fireing plate diode.

Mar 12, 2010 | Ford Explorer Cars & Trucks

3 Answers

Engine light keeps comeing on mecanic change o2 senser worked for half hour came back on cods keep saying its miss fireing have had this problem for a month know

Start Small work to Big = Saved Money!
The Code(s) should be telling the specific cylinder(s) that are misfiring. Do you know waht the code is?
Target those cylinders 1st before testing the unaffected cylinders.
The following should isolate the problem(s).
1. Spark plugs - take out-reconnect back to wires and test spark plugs for getting sparks. If none: Don't replace them yet. GO TO 2. If the spark plugs are worn, dirty them replace them.
2. Remove spark plugs form end of ignition wires and test for spark from the wire. If none: Don't replace them yet. GO TO 3.
3. Remove the wires from the coil connection and test the coil for spark for each cylinder. If none: Don't replace it yet.
4. Test each spark plug and wires this way.
5. Coil Packs normally provide fire for 2-cylinders at the same time. The two are paired across from one another.
6. Test the coil for fire, amount of fire and if there is both cyclinders firing.
Misfire and the O2 Sensor got replaced??
Good Luck and get back with me if you need additional help or if this solved the problem.

Nov 20, 2009 | 2004 Dodge Intrepid

1 Answer

1993 Chevy Cavalier 2.2 not firing on 2 cylinders

The reason I'm asking this is because a dual coil fires BOTH plugs at the same time. If one plug doesn't fire right, the other won't either, even to a point that neither does. Kepp the coils where they are and swap the plugs and wires and see if you have a change. Let me know

Jan 24, 2009 | 1999 Chevrolet K1500

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