Hello Mark greetings from Mexico city, I hope you can help me since I have a question about this video, Actually I go to school to get a degree as an auto technician and well today I had to give a class about DIS and I showed this video to the class and they love it but unfortunately my teacher did not agree about the spark traveling trough the mono block and then being picked up by the second spark plug from the cylinder that controls the same DIS, how can be this possible?
@sangreazteca69 Hello, I first want insure you everything in this and all our videos is fact. I do not blame your teacher, I am sure he is very good, it can be hard to understand this system. On a DIS coil the primary and secondary windings do not touch each other. Remember, electricity will always return to it's source. If the windings do not touch each other the source for the high secondary current is the secondary winding. You can prove this by removing the spark plug wires from a coil and
@sangreazteca69 cranking the engine over. You will see the spark jumping from one tower to the other and not to ground. I hope this helps you. If you need any further information please let me know. Congratulations on your English, it is very good. I wish my Spanish was half that good.
On a DIS system that fires two plugs at the same time, you need to use a double platinum plug instead of a platinum plug. Otherwise, half the plugs will experience premature wear.
@adhdkid918 if there were extra fuel to burn it is going to happen when an exhaust valve is open. Do you think this might create a backfire? To prove what I am saying in the video do this. Remove the two spark plugs from the cylinders being fired from one coil. Look very carefully at the electrodes. You will find the inside electrode worn on only one spark plug. If you look very carefully at the other plug. You will see the outside electrode is worn in the middle.
@dmorley100 There are a lot of misconceptions in this business. Unfortunetly, it is a much bigger problem then a garage actually ripping someone off. But, the public does not think that way. When a technician misdiagnosis a problem many customers will immediately think he is trying to steal from them. When in fact it is a problem of education. Sad but it is the bitter truth.
@markjhicks2 What makes it real bad is that ain't just technicians who suffer from a lack of education. Service writers are bad about it too. They don't realize how much time and thought it takes to properly diagnose problems. They expect it to happen almost instantenously and that the scanner'll just magically tells you exactly what's wrong with the car. If that was really the way it worked, wouldn't either one of us have a job right now.
@dmorley100 You are absolutely correct. I could not have said it better myself. After all these years it is still a black art in many ways. This is why my articles and videos focus on the the function and testing of systems. If you have a good understanding of how the system functions you are well on your way to making an accurate diagnosis. But as hard as I try; are there times when I make the wrong diagnosis? Yes it still happens from time to time.
@adhdkid918 OK now that I have that off my chest. When i first learned how DIS worked I had the same questions and many more. You are saying that the coil fires out of both towers at the same time. Firing one cylinder under compression and the other on the exhaust stroke to burn the extra fuel leftover from the previous combustion event. There are engineers a lot smarter than me that spend their lives making sure all the fuel is consumed during combustion.
@adhdkid918 Well my friend you have a very interesting way of asking questions, but please next time you ask refrain from swearing, we do not our young to think everyone one converses this way. If you feel you need to talk that way and you have the courage, please go to the Wells website there is a link on my channel. On that site you will see an 800 number all over it. Dial that number and press 3 when prompted and ask for me. I would love to discuss this with you and swear at me.
1988 mitsubishi starion, 2.6 turbo. i notice the accel coil was leaking oil at times plus hot.The car turned off in the freeway, i manage to take it home running crappy as hell.Also, the catalick converted was pluged i put a new one same problem start cranking but no spark.Put original coil back/stock same problem Ngk wires are new.
If the catalytic converter is getting plugged up you definitely have a misfire. I see you have an Accel coil. Do you also have multi-spark ignition? If the pick-up assembly has two wires going to it, it can be checked by looking for an AC voltage. During normal cranking speed it must generate at least .5 AC volts. If this is correct, I work suspect a problem with the multi-spark. Please let me know the results or if you have any further questions.
@markjhicks On engines that have 2 spark plugs per cylinder, do the cylinders fire at the same time? If yes, then wouldn't the 2 wave fronts collide and cause spark knock? What is the benefit of 2 spark plugs per cylinder anyways?
The two plugs do not fire at the same time. There is normally a leading and trailing plug. The theory is to have a more complete burn due to the configuration of the piston and head.
Can i put this on a stario, car does not start but cranks.I put new distributor wires, park plugs, rotor,dis cap. I have a feeling its the coil if not my icm.I had a original coil with resistor upgraded to an accel can any one help.
There can be many reasons for a no-start problem. Before I can begin to help you, I will need to know the year, make, model and engine size of your vehicle.
Hello Mark greetings from Mexico city, I hope you can help me since I have a question about this video, Actually I go to school to get a degree as an auto technician and well today I had to give a class about DIS and I showed this video to the class and they love it but unfortunately my teacher did not agree about the spark traveling trough the mono block and then being picked up by the second spark plug from the cylinder that controls the same DIS, how can be this possible?
sangreazteca69 11 months ago
@sangreazteca69 Hello, I first want insure you everything in this and all our videos is fact. I do not blame your teacher, I am sure he is very good, it can be hard to understand this system. On a DIS coil the primary and secondary windings do not touch each other. Remember, electricity will always return to it's source. If the windings do not touch each other the source for the high secondary current is the secondary winding. You can prove this by removing the spark plug wires from a coil and
markjhicks 11 months ago
@sangreazteca69 cranking the engine over. You will see the spark jumping from one tower to the other and not to ground. I hope this helps you. If you need any further information please let me know. Congratulations on your English, it is very good. I wish my Spanish was half that good.
Mark Hicks
Wells Vehicle Electronics
markjhicks 11 months ago
On a DIS system that fires two plugs at the same time, you need to use a double platinum plug instead of a platinum plug. Otherwise, half the plugs will experience premature wear.
LarryLane07 1 year ago
@LarryLane07 Larry you absolutely correct. Thank you for bringing up this important point.
Mark Hicks
Wells Vehicle Electronics
markjhicks 1 year ago
wow i learned alot!! tanks for posting this video! makes me want to replace my coil pack plugs and wires! asap!
lawnside82 1 year ago
@lawnside82 Glad you liked the video. Keep watching we have many more coming.
markjhicks 1 year ago
@adhdkid918 if there were extra fuel to burn it is going to happen when an exhaust valve is open. Do you think this might create a backfire? To prove what I am saying in the video do this. Remove the two spark plugs from the cylinders being fired from one coil. Look very carefully at the electrodes. You will find the inside electrode worn on only one spark plug. If you look very carefully at the other plug. You will see the outside electrode is worn in the middle.
markjhicks 1 year ago
@markjhicks Don't you just love these people who think they know everything there is to know in this line of work, LOL.
dmorley100 1 year ago
@dmorley100 There are a lot of misconceptions in this business. Unfortunetly, it is a much bigger problem then a garage actually ripping someone off. But, the public does not think that way. When a technician misdiagnosis a problem many customers will immediately think he is trying to steal from them. When in fact it is a problem of education. Sad but it is the bitter truth.
Thank you for the reply,
Mark Hicks
Wells Manufacturing L.P.
markjhicks2 1 year ago
@markjhicks2 What makes it real bad is that ain't just technicians who suffer from a lack of education. Service writers are bad about it too. They don't realize how much time and thought it takes to properly diagnose problems. They expect it to happen almost instantenously and that the scanner'll just magically tells you exactly what's wrong with the car. If that was really the way it worked, wouldn't either one of us have a job right now.
dmorley100 1 year ago
@dmorley100 You are absolutely correct. I could not have said it better myself. After all these years it is still a black art in many ways. This is why my articles and videos focus on the the function and testing of systems. If you have a good understanding of how the system functions you are well on your way to making an accurate diagnosis. But as hard as I try; are there times when I make the wrong diagnosis? Yes it still happens from time to time.
Thank you for the great post.
Mark
markjhicks 1 year ago
@adhdkid918 OK now that I have that off my chest. When i first learned how DIS worked I had the same questions and many more. You are saying that the coil fires out of both towers at the same time. Firing one cylinder under compression and the other on the exhaust stroke to burn the extra fuel leftover from the previous combustion event. There are engineers a lot smarter than me that spend their lives making sure all the fuel is consumed during combustion.
markjhicks 1 year ago
@adhdkid918 Well my friend you have a very interesting way of asking questions, but please next time you ask refrain from swearing, we do not our young to think everyone one converses this way. If you feel you need to talk that way and you have the courage, please go to the Wells website there is a link on my channel. On that site you will see an 800 number all over it. Dial that number and press 3 when prompted and ask for me. I would love to discuss this with you and swear at me.
Mark Hicks
markjhicks 1 year ago
very very helpful
thank you
noshy09 1 year ago
Are distributorless ignition systems only found on V-type engines?
nobleheight 2 years ago
no, DIS can be on any even numbered cylinder engine. Example GM 2.5.
markjhicks 2 years ago
Is the ignition system on my 1990 Honda Accord considered an HEI system?
nobleheight 2 years ago
yes
markjhicks 2 years ago
Is the crankshaft position sensor connected to the PCM or the ignition control module?
nobleheight 2 years ago
It is connected to the ICM on this system.
markjhicks 2 years ago
1988 mitsubishi starion, 2.6 turbo. i notice the accel coil was leaking oil at times plus hot.The car turned off in the freeway, i manage to take it home running crappy as hell.Also, the catalick converted was pluged i put a new one same problem start cranking but no spark.Put original coil back/stock same problem Ngk wires are new.
jjhonnyem626 2 years ago
If the catalytic converter is getting plugged up you definitely have a misfire. I see you have an Accel coil. Do you also have multi-spark ignition? If the pick-up assembly has two wires going to it, it can be checked by looking for an AC voltage. During normal cranking speed it must generate at least .5 AC volts. If this is correct, I work suspect a problem with the multi-spark. Please let me know the results or if you have any further questions.
markjhicks 2 years ago
@markjhicks On engines that have 2 spark plugs per cylinder, do the cylinders fire at the same time? If yes, then wouldn't the 2 wave fronts collide and cause spark knock? What is the benefit of 2 spark plugs per cylinder anyways?
nobleheight 2 years ago
The two plugs do not fire at the same time. There is normally a leading and trailing plug. The theory is to have a more complete burn due to the configuration of the piston and head.
markjhicks 2 years ago
Can i put this on a stario, car does not start but cranks.I put new distributor wires, park plugs, rotor,dis cap. I have a feeling its the coil if not my icm.I had a original coil with resistor upgraded to an accel can any one help.
jjhonnyem626 2 years ago
There can be many reasons for a no-start problem. Before I can begin to help you, I will need to know the year, make, model and engine size of your vehicle.
markjhicks 2 years ago