Questions tagged [ignition-coil]

A component of the ignition system that, by induction, creates the high voltage required by the spark plugs.

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1answer
30 views

What is the expected voltage of a coil to a distributor supposed to be?

According to, https://www.carparts.com/classroom/ignition.htm . I have two wires that go to positive side of coil, one from resistor / ballast and the other from ignition switch, is this correct? My ...
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10 views

VW Fox misfiring

I have a vw fox 2006 1.2 and have had it for just over 3 months. I have noticed it starts to misfire and the engine loses power sometimes coming to a complete stop after a stall or judder when revs ...
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14 views

1989 suzuki gsxr750 slingshot k

Had bike tuned up new plugs carb tuned new gas bike starts cold runs great when bike is hot will start but only idle won't rev over 1000rpm can't drive let cool down runs drives great
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2answers
69 views

Pin out for Bosch ignition coil (Part No# 12131712219)?

Does anyone have any information on this particular Bosch ignition coil for BMW. The part no. is 12131712219. Tried googling it but was couldn't find much info. I would be really grateful if anyone ...
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1answer
22 views

How can I do a simple coil test to check for spark

I've got a boat engine which will not start. The engine was factory refurbished last year, so I do not expect wear and tear to cause the issue. I do not see sparks on the plugs. So I'm trying to test ...
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1answer
27 views

Honda jazz i-DSI front ignition coils bad or not?

I have a honda jazz with an i-DSI engine and when I did a coil check by unplugging the coils one by one, all four coils in the front does not affect the engine rpm when removed, except the 4 in the ...
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1answer
13 views

2009 Ford Escape Hybrid - Ignition Coils and Spark Plug Replacement

I've purchased the parts and done my research. Basically, I am seeking some insight here to gauge if my understanding of the procedure is sufficient, that I have acquired all the necessary parts, and ...
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1answer
17 views

Craftsman Leaf Blower wont start, ignition coil failure?

In a previous question I asked about repairing a carb for my leaf blower and the repair didnt hold so I bought a new one. Replaced fuel filter and fuel lines, also replaced the carb gasket. I seem to ...
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My 2004 KIA Carnival 2.9 crdi intermittently refuses to start

My 2004 KIA Carnival 2.9 crdi intermittently refuses to start. I have light, radio, electric windows but just doesn't turn over at all. If I leave it a few hours and go back to it, it'll start first ...
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5answers
242 views

2 Stroke engine magneto ignition system

I've got a 2 stroke 1 cylinder engine and its ignition system doesn't seem to work. I'm having problems with my magneto ignition system and I need help connecting everything up. I think I've ...
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1answer
43 views

Do spark plugs need changing if one ignition coil cable broke

A friend of mine had one of their ignition coil snap in half, which meant one cylinder wasn't firing. She drove for approximately for 10km, before getting back home and finding out what was wrong. We ...
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1answer
448 views

What would cause a BMW 3 series E90 to misfire until the engine has warmed up?

I took my car to a mechanic because of misfiring issues. He said his computer told him it was an ignition coil pack issue, specifically coil 1. Anyway, he changed it and the car was still misfiring. ...
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1answer
60 views

After mechanic work, car starts fine but accelerating stalls the engine

I own a 2003 Mitsubishi Lancer, and have been the only owner and mostly the only driver. About a year ago I had a weird misfiring problem where if I pushed the accelerator down more than half way it ...
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1answer
46 views

What an ignition control module is needed for?

I have a Chevrolet S-10, according to the the Ignition System Circuit Diagram the ICM gets an Ignition Control Signal from the PCM and sends a Switching Signal to the ignition coil. As the Ignition ...
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1answer
45 views

ignition coil or cam sensor or pcm making misfire in exhaust possibly?

I am not able to get the jeep to the auto parts and get it's diagnostic but I'm wondering if the coil pack could be my problem? I've tried to deduce the misfire for days and have read and tried ...
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557 views

Ignition coil upgrade

My motorcycle felt unresponsive these past few days and found out that it was caused by a weak spark because the ignition coil is about to go bust. Since I am thinking about doing an upgrade to a ...
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65 views

Why would the same ignition coil fail 4 times in my 2012, 5.3 Silverado?

The first one failed at around 90K miles, the second around 130000K, the third around 165000 and again this week at 167000K. I've changed spark plugs and plug wires. Always the same cylinder and the ...
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1answer
370 views

What would cause repeated failure of ignition coils?

I have a Nissan 2008 Rogue, which is fired by ignition coil. I've been experiencing repeated singular ignition coil failures every 1-2 months now for the past 6 months. I'm on my 6th failure, never ...
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0answers
322 views

Can I use a DC ignition coil for my motorcycle without damaging anything?

Last night I followed this guide I found on the internet http://waynescyclegarage.mysite.com/custom.html showing you how to rewire a Honda SL engine so that it can run without a battery.. and I got it ...
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1answer
57 views

Why can't I get a spark?

I have an early 70's Honda SL125 engine and I'm trying to wire it up so that it can run without the battery. I found this guide http://waynescyclegarage.mysite.com/custom.html and I've followed it and ...
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2answers
397 views

Starter grinding on flywheel only when ignition system is connected

I have a boat with a 1990 GM 305 in it. Last year I replaced my computer controlled ignition system with a basic HEI / distributor based ignition system. Everything worked great for the entire boating ...
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1answer
2k views

Broken ignition coil: spark plug's fault?

Two days ago my Opel Corsa D LPG's engine started to misfire, and by means of an OBD interface I found out it was cylinder 1. First thing I thought about were the spark plugs, as I haven't changed ...
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231 views

Finding a Capacitor (Condenser) for an ignition coil

How would one go about calculating the necessary specs for a capacitor to be paired with an ignition coil?
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53 views

Ignition Coil Not Working With Points/Stator Current

I have an Ignition Coil connected to a points and the motors stator. I have tested both with leds and the power generated by kicking the motor over blew both, the stator produced a solid light and the ...
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2answers
139 views

Diagnosing a boat that wont start

Having some problems with my '92 Boston Whaler Rage jet-boat again.... See this post for all relevant boat info: Starting a 2 stroke jet boat after several years Ok, so I did basic troubleshooting, ...
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1answer
2k views

Testing a motorcycle ignition coil and spark plug

Here is an image for reference: I am attempting to test this ignition coil and spark plug. How do I go about connecting this to its corresponding 6v battery to get it to fire. As well I will be ...
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1answer
1k views

How does this ignition coil work? Why are there two wires, and where should they be connected?

I'm having ignition problems with my car (1985 Suzuki Samurai). Sometimes the engine will die randomly while driving, and often when warm it will have problem starting. I bought a new ignition coil, ...
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362 views

85 Suzuki Samurai - Engine sometimes stalls, and hard to start when warm. Probably electrical problem

I'm having a problem with my car. Sometimes when engine is warm, it will strugle to start (starter runs fine, but no ignition). It also happens (rarely) that the engine just dies while driving. It ...
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1answer
153 views

Third misfire code on different cylinders in two months

I have a 2002 Mazda MPV with 133,000 miles. Two months ago, my mechanic replaced the ignition coil on cylinder 4 due to a misfire. Two weeks ago, he replaced the coil on cylinder 6 due to a misfire. ...
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2answers
204 views

Does the E90 320i 2006 use the same Coils and O2 sensors as the E90 328i?

I'm looking on eBay for replacement parts for my E90 320i 2006, but I can't find anything for it. In the results I always find replacement parts for the 325i, 328i, etc., but not for my 320i 2006. I ...
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1answer
325 views

What creates resistance in ignition coils?

Ignition coils are basically just copper wire wound around an iron core. Normally, I would expect copper wire, measured with a ohmmeter to show close to zero resistance. However on my vehicle for ...
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4answers
2k views

Engine not starting after melted Ignition Coil

Car: 2004 Honda CRV-EX (the moonroof one) Miles: 220k~ Issue: I had cylinder misfires before on this car and they were fixed with new sparkplugs and ignition coils. Recently I've had more misfires ...
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1answer
280 views

Renault Megane Sport II 2006 petrol Coil Problem

I have a problem with Renault Megan Most likely its something with the coil but its really weird. When i turn on the car its fine i drive for about 20-40km and the car starts to lose power like a ...
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0answers
148 views

Can pressure caused by temperature cause ignition coils to unseat?

I've got a Rotax engine that looks like this from the top: The ignition coils look like this when removed: Recently two of the three ignition coils unseated after approximately 10 minutes of ...
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1answer
38 views

Do ignition coils on small motors (lawn mowers etc) determine timing?

I have a Stihl weed whacker for which I haven't been able to find an appropriate ignition module (coil). I purchased one for a similar model that would fit and now the whacker has spark again, however ...
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3answers
3k views

Motorcycle misfires

I own a 1990 Suzuki GSXR 750, I, bought the bike about a month ago. The first time I took the bike out for a ride I noticed that when you accelerate hard and the engine is at high revs it feels as if ...
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1answer
6k views

Ignition coil overheating: what to blame?

I have got in the past ignition coil overheating, making the engine run very erratically and in some cases it even wouldn't run at all until the coil got cooler. In one occasion I changed the coil for ...
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2answers
10k views

how many amps do a ignition coil draw?

I know that the Peak output voltage in a ignition coil is between 10,000-45,000 V "Or so I heard" but how many amps does the ignition coil draw from the 12Volt side ? I heard it was small....
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1answer
1k views

Misfire in single cylinder 4 stroke engine

I am having Apache RTR 180. Tech Specs:- Displacement: 177.4 cc Cylinder arrangement: Single Maximum Power: 12.52 kW (17.03 bhp) @8500 rpm Maximum Torque: 15.5 Nm @ 6500 rpm Bore x Stroke: 62....
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15k views

What are the benefits of direct ignition (coil on plug) system?

Most recent gasoline cars have a direct ignition, also called coil on plug, system where each spark plug has its own ignition coil. Before that, cars used a common ignition coil for all cylinders. ...
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2answers
2k views

My 2008 Hyunai Accent is misfiring on two cylinders, bad gas?

Update: So I went full steam ahead today. Got the new valve cover gasket ($20.99 at AutoZone), unscrewed all the 10mm bolts, pried the cover off, hey! No obvious breaks in the seal! Well, that's good ...
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1answer
441 views

Do these coil on plug waveforms suggest I have a bad engine controller?

I have a missfire on cylinder 3. I have swapped the coil from cylinder 6 and 3, but the missfire remains on cylinder 3. I have also done the following: - replaced all spark plugs. - checked the ...
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3answers
490 views

Can I replace my ignition coil with a ECU?

Can I take the ignition coil out of my 1965 dodge challenger and replace it with a ECU? If I can, how will I go about doing it? Can it be a simple replacements?
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2answers
5k views

Multiple misfire codes with oil in coil pack well

On Halloween, the check engine light on my 2007 Honda Odyssey EX started flashing. Read the codes which were a random misfire and misfires on 2,4,5, and 6 (P0300, P0302, P0304, P0305, and P0306 ...
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1answer
32 views

ignition lead replacement

I drive a 1998 Ford Falcon AU with 210,000 km on the clock with original 18-year-old ignition leads. I only drive about 10,000 km per year. The car runs perfectly. Should I replace them? PS. I replace ...
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5answers
2k views

Do primary and secondary coil resistances correspond to number of windings?

An inductive ignition coil is basically a step up transformer, in which the ratio of windings between the primary coil and secondary coil determines how much the primary voltage is multiplied by. I ...
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1answer
638 views

Can an ignition coil melt-down?

I'm having trouble with a John Deere 210 Lawn & Garden Tractor. I mowed happily for an hour in the morning, then it quit on me after five minutes of mowing in the afternoon. No noises, just died;...
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3answers
3k views

How is ignition coil feedback useful?

Today I learnt that some engine management setups demand a feedback signal from the ignition coil. What does it do with the signal though? Is it just for diagnostics?
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1answer
1k views

04 Lexus ES330 Multiple Ignition Coil Failures / Poor Coil Feedback Signal

I was asked to look at a Lexus ES330. The complaint was the car wouldn't go over 20MPH and would fall on it's face. The ECM was replaced and problem persisted. One coil was replaced around a year ...
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1answer
593 views

Can Getting Fuel Injectors or Ignition Coils Wet Ruin Them?

I have a 2005 Suzuki Forenza Wagon where I recently cleaned the engine compartment. I was a little careless during the cleaning and water got in under the spark plug wires to sit around the top of the ...