How to TEST a Coil Pack with Basic Tools ⚡ NO Scan Tool Required
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- เผยแพร่เมื่อ 15 ก.ค. 2024
- How to test a coil pack with basic tools. I show you how to use a coil on plug spark tester so there is no scan tool required. CHEAP and easy DIY ⚡ ⚡
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Coil tester:
UK: amzn.to/38amfNc
USA: amzn.to/3sLKydS (note this is a slightly different design but functionally the same)
WW: bit.ly/Ignition_coil_tester (this is where I bought mine)
A basic & simple 12V test light with worldwide delivery and various stock locations
WW: bit.ly/12V_Test_Light
Voltage & continuity tester similar to mine, but updated with LCD display
WW: bit.ly/Volts_Continuity_Tester
An insight into ‘dielectric strength’:
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0:00 How to test a coil pack with basic tools
0:26 Power balance test, disadvantages
0:46 Misfire under load, discussion
1:14 Preparation
1:29 Remote Starter Switch - top tip❗
1:40 Coil over plug tester, overview
2:22 it's physics Jim
3:15 Ignition coil spark test, procedure
4:19 Ignition coil test results explanation
5:04 Testing ANY ignition coil
5:31 Testing ignition WIRING
7:32 Other misfire causes
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God bless you, always laying down the facts and making it as easy to understand as possible
Excellent video ,so straight forward and explanatory,very simple method of diagnosis.Thank you.
You're correct, the methodology is very easy. This makes it all the more perplexing that so many ' _mechanics_ ' at garages will tell you coils cannot be tested except by substituting for a new one❗ I often say that most mechanics aren't fit to service a walking stick and this is one of the reasons why.
Thanks for detailed infos and complete presentation🙏🙏🙏
Keep Safe 🙏🙏🙏
Thanks & God Bless 😇😇😇
Excellent information, using a cpl steps to test my camaro ss coil and signal. Thanks again!
You are welcome! What did you find? Problems? Or all okay?
Nicely explained, thank you!
Oh good, I was a bit concerned how this one would come across. Thanks
Great.
It ia very simple and clear. Thanks, Uwa from Indonesia
Glad it was helpful! One of the things I love about doing this channel is hearing from people all over the globe. And you can't get much further away than Indonesia.
Hi, your videos are always so clear and helpful (and I, for one, enjoy the chattiness.) A question on this one though: The instructions that come with the ignition coil tester say in part: "make sure that all the plug connectors [for the coils you're not testing at the moment] are earthed; if not, this might damage the ignition system's output stage or other components..." Is this something to be concerned about using the method you demonstrate here? Thanks!
Thanks for a great video. How did you crank the engine without turning the key?
Amazing explanations!
Glad you think so!
very helpful thanks
Thanks Hussain.
good job pa
Hello, I would like to know how you did your Remote Start Mechanism? Did you use a module or you just did the cable connections by yourself? Counting on your co-opearation. Thank You.
Where do you connect the other end of the wire for a remote start?
Syd, when you check that the lbulb is flickering on a 4 wire coil over system, is your test light grounded externally or into the ground terminal within the coil's connector? Either way I cannot get the bulb to flicker with the starter swinging the motor? This car is 'mis firing' badly!
You can pull the rubber from the coil pack to see if there is corrosion between pack and spring
Yes, with some coils you can. Good tip, thanks
Great Video. Do you think.this would work ok with my 91 colt? The ignition coil is part of the distributor 😳
It should, yes. Attach the tester to the HT leads in place of the spark plugs as shown. Test all cylinders, noting the results. If one or two are 'down' then bear in mind it could be any component at fault. Swap the HT leads from a 'good' cyl to a 'poor' cyl (remembering which is which) and see if the results change on retest. You can find which components need replaced this way.
Is it a single coil system or twin coil (aka wasted spark)?
@@CycloneCyd thanks Cyd. As far as I can tell it's a single spark. I check cheers. The low tension is suppkied by the electronics in the dizzy. Sent to the coil in the base of the dizzy which then distributes it to individual plug.
Fantastic video Cyd and cheap way testing coils under load, Cyd my Aero has a misfire on idle but not under load, what do you suspect that may be?
Vacuum leak. Watch out for this Sundays video 👍
@@CycloneCyd Many thanks for that, I had a chap use a smoke machine and do some tests but maybe we missed something
@@badshotuk72 under normal running vacuum is at it's greatest when idling (around -9psi, or about 4-5psi absolute). Consequently very tiny splits in hoses may only open up under these conditions. Such problems can be very difficult to find.
Also check the tightness of the inlet mani screws - not unknown to work loose. Also o-rings on MAP/IAT sensors and throttle body gasket.
@@CycloneCyd Thank you for this video, useful and clear as always.
I've got random cylinder misfire (P0300) on my 9-3, but I think it might be connected to intake leak. Could you make also a video on intake leaks diagnostics?
Cyclone Cyd; I purchased the US version of the spark tester in your links. The graduations marked on it are for kilovolts. The last mark is 40. However, the 30 kv mark is roughly 2cm. 40kv is just over 2.5 cm. You indicate in your video that a 2 cm gap should give us a 60 kv spark if large and blue. Does the manufacturer have this tool mismarked?
I remember from my Uni days that the figure is 30kV/cm (3kV/mm or 3MV/m). This article from sciencing agrees with that figure sciencing.com/calculate-30-kw-amps-7644913.html.
Wiki also agrees and so does this article from the IEEE: ieeexplore.ieee.org/document/6591649 which has to be counted as a reliable source.
So, YES
He gave the starter solenoid 12 volts, that what the last turn of a key does.
I am still waiting for your video on " How to repair the lumber support of driver seat " ....
Me too
Hey do you really need to pull all the actual sparks out too ? Thanks for awesome video
Doing so reduces the load on the starter and battery. Otherwise you might overheat the starter and deplete the battery too much.
@CycloneCyd thank you so much . I bought the tester kit but was anxious about doing this before confirming . I read some scare stories about certain engines running this test but from.your video you said you've done it on ecoboost engines. I have a 2.0 you see
@@sjgfloydrose1234 if you can, it would be a good idea to put the battery on charge after testing. Good time to change sparks as well since you're taking them out anyway (not essential, but saves effort long term if they are approaching change time anyway).
@CycloneCyd brill thanks again! If I can't put it on charge will it be good enough to go on a 30 mins drive after ? I'm gonna use the tester on my mk3 focus st tonight
@@sjgfloydrose1234 There is no substitute for a mains charger, or a decent solar charger if you can't. A typical cold start in a petrol 2 litre uses about 0.5Ahr from the battery and it takes the alternator 30-60 minutes to put that back.
You could drive to the ends of the earth and an alternator would never fully charge the battery. They aren't designed for that.
Quick question: can a bad coil cause a spark plug to go bad?
A weak spark causes poor combustion and this in turn can cause a plug to overheat, damaging it. Fortunately spark plugs are extremely robust. So, yes indirectly. I'm not sure it could directly.
That does raise a good point I should have mentioned in the video - if you find yourself having to replace coils, replace the plug too.
My coil melted to the connector. What should I do?
Ouch! You'll need a replacement coil defo. I'd contact one of the Saab breakers to get a couple of connectors with at least 150mm lead on them. Then you can cut yours off and splice the replacement connector onto your harness.
@@CycloneCyd What is defo short for?
@@CycloneCyd Also thank you so much!
@@CycloneCyd Connector is spliced and now the car won’t turn over. What should I do next?
@@trevorcarty Check the wiring to the starter and work back from there. You haven't accidentally pulled the connector off the solenoid? Check the starter relay.
Use a test light to chack you have power at various points along the circuit
Gotta love the description basic tool. Majority or everyone else would not think this speciality tool would be described as basic. Basic means good chance you could already have it and it has mutiple usages. This tool is 3 days away by fastest shipping here’s a real help. Electrical power testing pen. Use it and because it’s dc current that is pulsing it will show the pulse and when you see a short or weaker pulse there’s your issue then test deeper before replacing as it could be a bad connection
He said BASIC TOOLS. (Oh btw you gotta order this special tool) 😑