Spark plug coils
06-27-2014, 08:02 PM
#1
Dazed and Confused
Thread Starter
Spark plug coils
I had a 1977 F150 with one central coil. I now have a 2011 and if I am not mistaken each spark plug has a coil. Why? One coil was easy to troubleshoot and replace. What is the advantage? Is it now engines are more computerized? Pardon my ignorance and sorry if this has already been discussed.
Last edited by Tallyman89; 06-27-2014 at 08:09 PM.
06-27-2014, 09:06 PM
#2
1. More power to each plug,
2. you almost have to use some type of COP (coil on plug) or CNP (coil near plug) in a distributer-less ignition, and it's actually easier to diagnose something like a misfire with this type of design since the computer views each plug as it's own separate being.
3. It's much cleaner design aesthetically than having spaghetti wiring going all over the engine.
2. you almost have to use some type of COP (coil on plug) or CNP (coil near plug) in a distributer-less ignition, and it's actually easier to diagnose something like a misfire with this type of design since the computer views each plug as it's own separate being.
3. It's much cleaner design aesthetically than having spaghetti wiring going all over the engine.
06-28-2014, 09:46 AM
#3
Senior Member
1. More power to each plug,
2. you almost have to use some type of COP (coil on plug) or CNP (coil near plug) in a distributer-less ignition, and it's actually easier to diagnose something like a misfire with this type of design since the computer views each plug as it's own separate being.
3. It's much cleaner design aesthetically than having spaghetti wiring going all over the engine.
2. you almost have to use some type of COP (coil on plug) or CNP (coil near plug) in a distributer-less ignition, and it's actually easier to diagnose something like a misfire with this type of design since the computer views each plug as it's own separate being.
3. It's much cleaner design aesthetically than having spaghetti wiring going all over the engine.
This all correct except #1. The old single coils actually put out more power at 45-50K volts. COP do well to put out 30-35K volts.
08-08-2021, 12:50 PM
#4
Senior Member
...
08-08-2021, 06:52 PM
#5
has left the building
08-08-2021, 07:54 PM
#6
Senior Member
Sorry. I was trying to post on another thread and somehow it showed up here and I didn't see a way to delete it.
08-08-2021, 08:17 PM
#7
has left the building
Go to your User CP area and turn off the 'feature' called RELATED THREADS.
You aren't alone -it happens every few days. ha
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08-08-2021, 09:18 PM
#8
Senior Member
Perfect, thanks for the tip.
08-09-2021, 12:37 PM
#9
There will also always be an ominous exhaust leak sound for a while before that plug blows........
Somebody has to completely ignore it.
They usually do on the high mileage vehicle, thinking it's an exhaust leak.
That's what I did on my Toyota truck, because it had exhaust leaks..... I would patch them but then I would hear them again sometime later like a year or something. It's exhaust system was rusting away there were holes in the muffler.
But then one time it wasn't an exhaust sound it was actually from a plug. Found that after the plug blew.
Somebody has to completely ignore it.
They usually do on the high mileage vehicle, thinking it's an exhaust leak.
That's what I did on my Toyota truck, because it had exhaust leaks..... I would patch them but then I would hear them again sometime later like a year or something. It's exhaust system was rusting away there were holes in the muffler.
But then one time it wasn't an exhaust sound it was actually from a plug. Found that after the plug blew.
08-09-2021, 01:06 PM
#10
has left the building
There will also always be an ominous exhaust leak sound for a while before that plug blows........
Somebody has to completely ignore it.
They usually do on the high mileage vehicle, thinking it's an exhaust leak.
That's what I did on my Toyota truck, because it had exhaust leaks..... I would patch them but then I would hear them again sometime later like a year or something. It's exhaust system was rusting away there were holes in the muffler.
But then one time it wasn't an exhaust sound it was actually from a plug. Found that after the plug blew.
Somebody has to completely ignore it.
They usually do on the high mileage vehicle, thinking it's an exhaust leak.
That's what I did on my Toyota truck, because it had exhaust leaks..... I would patch them but then I would hear them again sometime later like a year or something. It's exhaust system was rusting away there were holes in the muffler.
But then one time it wasn't an exhaust sound it was actually from a plug. Found that after the plug blew.
Related threads and you ended up here accidentally, not in one of the current spark plug blowout threads?