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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27 views

Repeated same-cylinder ignition coil failure 2014 Corolla

My engine on my 2014 Corolla started to sputter and I took it to a mechanic who replaced the #2 ignition coil and all the spark plugs. A week later the engine started to act up again, but only after ...
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12 views

Why my 1985 Cadillac Deville crank but can't start

Last autumn my cady run perfectly. Then I didn't drive it much during the winter (Nov - Apr), maybe only total less than 50 kms. In may it started have difficulty to start, but when I used spray fluid,...
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30 views

Can ignition coil over plug fail intermittently?

I'm getting P0352 on my '08 Toyota Sienna. Even after the dash lights up, the vehicle runs perfectly smoothly with no indication of ongoing failure (e.g., idle smooth, acceleration normal). If I clear ...
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28 views

Question about Ignition Systems ; The Amount of Contact Breaker Points inside the distributor

The distributor in Lamborghini Espada has 4 contact breaker points. Why is that? Couldnt a single point handle all 12 cylinders? I ve also heard they used twin points inside the distributors of some ...
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184 views

Can swapping ignition coils fix a cylinder four misfire?

My car was having power issues so I took it to the mechanic who said cylinder 4 was misfiring. He came back to me and said he swapped the ignition coils over and rescanned with no misfires and told me ...
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38 views

Replaced ignition coil pack - should I replace spark plug too?

My engine was recently misfiring and I replaced all of the spark plugs as a first attempt to get things working. It did not fix the problem, and the misfire continued. However, I did notice that for ...
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1answer
72 views

Ignition coil has discolored rings around it. Should it be replaced?

My car (with 175k miles) has started to sputter occasionally while driving. It happens briefly and lightly. It's almost as if the car is about to run out of gas and the engine is going to shut off. ...
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1answer
44 views

Is excessive greasing of coil pack terminals standard practise?

I was swapping out some coil packs and found the ones in my car were packed with a ton of greese. Im quite impressed the vehicle was running at all with that much greese between the terminal and the ...
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1answer
166 views

Accessing the 1st and 2nd cylinder ignition coils in VW Golf MK5 (55 kw)

I am replacing all of the ignition coils in my MK5 Golf as they keep they have all started to fail recently as per this question I have managed to change them with the exception of 1 and 2 because I ...
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1answer
65 views

Cylinder misfires since having a full service on Golf MK5 2005

I took my VW Golf MK5 2005 (130,000 miles) to have a full service the other week which included changing all 4 spark plugs. Whilst driving home the engine management light came on and I lost some ...
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99 views

Ignition coil replacement

My girlfriend has a 2007 Nissan Sentra with 160000 miles on it. She does not think the spark plugs have ever been replaced which leads me to believe that the ignition coils have also never been ...
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2answers
64 views

Failed coil electronics plug for one cylinder

I have a 2005 Audi A6 Quattro with a 3.2l V6. My brother just purchased it from our local Craigslist, and we didn't check it over very thoroughly before purchasing, but at time of purchase it ran ...
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70 views

Less sparks on ignition coil

Why one output terminal of my car ignition coil gives less sparks than the other terminal. In fact, the 2 terminals are control by a single primary circuit of the same ignition coil!!! The other ...
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1answer
138 views

Cranking engine with coil wire removed - damage?

I cranked the engine while the wire connecting the coil to the distributor was removed in order to not spark the engine. Apparently this is not the right way to do it. Have I caused some damage by ...
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22 views

Ignition coil pack spark issues

One terminal of ignition coil pack gives less spark than its adjacent terminal of the same coil pack. The same is true for the other coil pack. All resistances relating to primary and secondary ...
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1answer
1k 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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63 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
940 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
420 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
645 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
215 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
59 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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5answers
4k 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
71 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
4k 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
91 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
126 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
70 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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1answer
951 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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1answer
106 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
822 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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682 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
140 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
890 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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416 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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60 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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233 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
5k 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
4k 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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643 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
188 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
336 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
609 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
5k 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 and ...
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1answer
410 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
249 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
57 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
5k 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
10k 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 ...