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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1 answer
185 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 ...
0 votes
1 answer
71 views

How to test a P2306 code - Ignition Coil error

I have a P2306 (Ignition Coil C Primary Control Circuit Low), so I swapped all ignition coils from their original place to another cylinder to verify the faulty ignition coil (I expect now to be in ...
0 votes
0 answers
17 views

Remove coil connector on 2004 Infinity G35 engine

My son is replacing the timing chain on an 2004 Infinity G35. He needs to remove the wiring harness with the coil connectors. The last connector is a bit different, and we can't figure out how to ...
0 votes
1 answer
22 views

Ignition coil connector on my 1978 jeep wagoner

I am looking to replace my Ignition coil connector on my 1978 jeep wagoner. As one of the wires is not attached. The one I am seeing online do not look like original. The original has three wires ...
0 votes
2 answers
139 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 ...
4 votes
1 answer
334 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 ...
2 votes
1 answer
327 views

Is it possible to have a good looking spark but but still not suitable for ignition?

I have a misfire on cylinder 1 unyet i have 4 great sparks with ignition timing and valve timing checked. I'm clutching at straws i know, but is it possible to have a long reaching spark bridging 20mm ...
0 votes
1 answer
27 views

Can a 97 f150 4.6 motor be swapped onto 2001 f150 4.6 triton body

Is the ignition coil connectors need to be changed to work .. the 97 motor has the electrical connectors on the motor and 2001 has the ones on the plugs ... Do I need to change them.. does it give off ...
1 vote
1 answer
55 views

Small engine reliable spark only in wrong direction

I have a very old (date unknown but pre 1980 I think) Motowatt 1500s generator driven by a two stroke MAG motor. When I bought it it had no spark. After cleaning the points there was spark but only at ...
1 vote
2 answers
2k views

Problem with Spark Plugs Repeatedly Fouling

My 2016 Honda Odyssey EX-L has fewer than 80k miles on it. Yet it's already had its check engine lights come on leading to replacing a few of the spark plugs and ignition coils. The problem hasn't ...
0 votes
2 answers
480 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 ...
10 votes
3 answers
33k views

Remanufactured 5.3 engine not firing on one bank

2007 Chevy Avalanche 5.3 vin 3. I bought a remanufactured engine. After installing it, the truck runs, but only bank 1 (1,3,5,7) is firing. It has power to the coil packs on bank 2 (2,4,6,8), but ...
1 vote
1 answer
569 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 ...
0 votes
1 answer
97 views

Broken Coil Tabs Normal?

"All harness ends to the coils are missing the tab that secures them to the coil...." Is his statement accurate? This is what the service advisor wrote us and I question this broken tabs ...
2 votes
2 answers
28k 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....
2 votes
2 answers
827 views

Spark plug and coil only one is bad for 2012 Honda odyssey

I am trying to find out if I have one spark plug (#3 to be exact) as well as the coil can I change just the one or is it bad for the engine to do so?
1 vote
2 answers
632 views

Crank no start - no spark

I have a crank - no start issue on a Nissan micra from 1999. It is a 1.3 gasoline engine. Up to this point I found out there seems to be no spark. Put a new spark in a wire and placed it on the ...
7 votes
5 answers
2k views

Engine shakes, from bad oil change

I got an oil change awhile back, I notice my car idling a little more. Where I park for work it was hard to tell what the oil leak was coming from on the ground. I don't know much, but I popped my ...
0 votes
2 answers
511 views

How can I test and find the polarity of an ignition coil (that's not connected to a car) using a multi-meter

How can I test and find the polarity of an ignition coil (that's not connected to a car) using a multi-meter. Just to let you know coils can have polarity when DC Voltage is placed on them. https://...
5 votes
1 answer
2k views

Do I change all four coils when I change one spark plug that is faulty

My nephew changed my spark plugs and coils. I have a 2011 Buick Regal and one of the spark plugs blew when I started it, so he removed it and replaced it with an old Prius spark plug. I would like to ...
1 vote
0 answers
70 views

Magneto diagnosis for old chainsaw engine

I'm attempting the restoration of an old Pioneer 620. Rotating the flywheel manually doesn't produce any spark. I disassembled the ignition assembly, which is a Wico FW 2542. The circuit is very ...
1 vote
0 answers
96 views

Is there a difference in a front and rear ignition coil? Can they be replaced with a generic ignition coil?

I have an 04' Suzuki Intruder VL1500 LC. Recently replaced the ignition coils with some aftermarket. Issue I'm having is the "ignition" fuse keeps blowing. Is there a difference in front/...
2 votes
1 answer
91 views

Car shakes since replaced spark plugs

I have a 2011 Lincoln MKZ and I just replaced the spark plugs and now the car shakes and Im getting a obd reading P0351- Ignition Coil A primary/secondary circuit P0113- Intake Air Temp Sensor 1 ...
1 vote
0 answers
876 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 ...
0 votes
1 answer
215 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 ...
2 votes
0 answers
516 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 ...
1 vote
1 answer
108 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 ...
1 vote
1 answer
87 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 ...
1 vote
1 answer
3k 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 ...
5 votes
1 answer
583 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 ...
1 vote
1 answer
207 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 ...
5 votes
2 answers
29k 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. ...
1 vote
1 answer
5k 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 ...
1 vote
1 answer
527 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. ...
1 vote
1 answer
6k 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. ...
4 votes
1 answer
17k views

Do I Need to Ground the Spark Plug When Testing

When I'm using a known good spark plug to test spark at each wire, do I need to ground the threads of the plug to the engine block like the guy in this video is doing? What happens if I don't ground ...
3 votes
1 answer
281 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 ...
1 vote
1 answer
177 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 ...
2 votes
2 answers
100 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 ...
0 votes
2 answers
284 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 ...
5 votes
1 answer
11k 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 ...
1 vote
1 answer
1k 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 ...
3 votes
2 answers
2k 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 ...
0 votes
0 answers
30 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 ...
1 vote
0 answers
74 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
0 votes
1 answer
502 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 ...
2 votes
1 answer
6k 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 ...
1 vote
1 answer
1k 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 ...
2 votes
5 answers
7k 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 ...
2 votes
1 answer
963 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 ...