Re: Help with rough idle and acceleration - TIA
 

How could they be in series????? That's like +-+-. You think it's
wired to go though only one plug and out through the ground or something
and back through the other plug, and to what?
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

bllsht wrote:
>
> If the spark plugs are in series, there is only one path.

Re: Help with rough idle and acceleration - TIA
 

How could they be in series????? That's like +-+-. You think it's
wired to go though only one plug and out through the ground or something
and back through the other plug, and to what?
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

bllsht wrote:
>
> If the spark plugs are in series, there is only one path.

Re: Help with rough idle and acceleration - TIA
 

Right Jerry, almost. :-)

The cylinder on compression stroke has a higher voltage demand since it has to
overcome cylinder pressure and the hydrocarbons. This is easily seen using an
oscilloscope.


In message <gTOWe.42300$ct5.42033@fed1read04>, "Jerry Bransford" wrote:

>I can't believe the BS Bill tries to palm off. You are right bllsht, two
>spark plugs share one coil in later distributorless 4.0L engines and
>both plugs are sent the spark voltage simultaneously. The spark plug
>immersed in the air-fuel mixture during the compression stroke will of
>course fire more readily than the other plug sitting in a cloud of
>post-ignition exaust gasses.
>
>Jerry
>
>bllsht wrote:
>> If the spark plugs are in series, there is only one path.
>>
>> In message <432B2845.7176F9FC@cox.net>, "L.W." wrote:
>>
>>
>>> Well, I'll just have to wait until I can cut one of the four liter
>>>coils apart. But know that an electrical spark travels the path of least
>>>resistance, making it impossible for one coil to fire two spark plugs,
>>>meaning there must be two primary and secondary coils within that one
>>>module.
>>> God Bless America, Bill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>bllsht wrote:
>>>
>>>>One coil. Two spark plugs. Both spark plugs fire EVERY crankshaft revolution
>>>>simultaneously. One spark plug always fires negatively (from center electrode
>>>>to ground electrode). The other spark plug always fires positively (from ground
>>>>electrode to center electrode).
>>>>
>>>>Does that sound "parallel" to you?
>>>>
>>>>You always have a link for everything, yet I haven't seen any links from you on
>>>>this subject yet. Having trouble finding one that agrees with you?

Re: Help with rough idle and acceleration - TIA
 

Right Jerry, almost. :-)

The cylinder on compression stroke has a higher voltage demand since it has to
overcome cylinder pressure and the hydrocarbons. This is easily seen using an
oscilloscope.


In message <gTOWe.42300$ct5.42033@fed1read04>, "Jerry Bransford" wrote:

>I can't believe the BS Bill tries to palm off. You are right bllsht, two
>spark plugs share one coil in later distributorless 4.0L engines and
>both plugs are sent the spark voltage simultaneously. The spark plug
>immersed in the air-fuel mixture during the compression stroke will of
>course fire more readily than the other plug sitting in a cloud of
>post-ignition exaust gasses.
>
>Jerry
>
>bllsht wrote:
>> If the spark plugs are in series, there is only one path.
>>
>> In message <432B2845.7176F9FC@cox.net>, "L.W." wrote:
>>
>>
>>> Well, I'll just have to wait until I can cut one of the four liter
>>>coils apart. But know that an electrical spark travels the path of least
>>>resistance, making it impossible for one coil to fire two spark plugs,
>>>meaning there must be two primary and secondary coils within that one
>>>module.
>>> God Bless America, Bill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>bllsht wrote:
>>>
>>>>One coil. Two spark plugs. Both spark plugs fire EVERY crankshaft revolution
>>>>simultaneously. One spark plug always fires negatively (from center electrode
>>>>to ground electrode). The other spark plug always fires positively (from ground
>>>>electrode to center electrode).
>>>>
>>>>Does that sound "parallel" to you?
>>>>
>>>>You always have a link for everything, yet I haven't seen any links from you on
>>>>this subject yet. Having trouble finding one that agrees with you?

Re: Help with rough idle and acceleration - TIA
 

Right Jerry, almost. :-)

The cylinder on compression stroke has a higher voltage demand since it has to
overcome cylinder pressure and the hydrocarbons. This is easily seen using an
oscilloscope.


In message <gTOWe.42300$ct5.42033@fed1read04>, "Jerry Bransford" wrote:

>I can't believe the BS Bill tries to palm off. You are right bllsht, two
>spark plugs share one coil in later distributorless 4.0L engines and
>both plugs are sent the spark voltage simultaneously. The spark plug
>immersed in the air-fuel mixture during the compression stroke will of
>course fire more readily than the other plug sitting in a cloud of
>post-ignition exaust gasses.
>
>Jerry
>
>bllsht wrote:
>> If the spark plugs are in series, there is only one path.
>>
>> In message <432B2845.7176F9FC@cox.net>, "L.W." wrote:
>>
>>
>>> Well, I'll just have to wait until I can cut one of the four liter
>>>coils apart. But know that an electrical spark travels the path of least
>>>resistance, making it impossible for one coil to fire two spark plugs,
>>>meaning there must be two primary and secondary coils within that one
>>>module.
>>> God Bless America, Bill O|||||||O
>>>mailto:-------------------- http://www.----------.com/
>>>
>>>bllsht wrote:
>>>
>>>>One coil. Two spark plugs. Both spark plugs fire EVERY crankshaft revolution
>>>>simultaneously. One spark plug always fires negatively (from center electrode
>>>>to ground electrode). The other spark plug always fires positively (from ground
>>>>electrode to center electrode).
>>>>
>>>>Does that sound "parallel" to you?
>>>>
>>>>You always have a link for everything, yet I haven't seen any links from you on
>>>>this subject yet. Having trouble finding one that agrees with you?

Re: Help with rough idle and acceleration - TIA
 

You finally got it! That's exactly how it works.

Hook your oscilloscope up to the positively fired cylinder and you will see an
inverted pattern.


In message <432C7C06.22B94AE6@cox.net>, "L.W." wrote:

> How could they be in series????? That's like +-+-. You think it's
>wired to go though only one plug and out through the ground or something
>and back through the other plug, and to what?

To the other post on the coil.


> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> If the spark plugs are in series, there is only one path.

Re: Help with rough idle and acceleration - TIA
 

You finally got it! That's exactly how it works.

Hook your oscilloscope up to the positively fired cylinder and you will see an
inverted pattern.


In message <432C7C06.22B94AE6@cox.net>, "L.W." wrote:

> How could they be in series????? That's like +-+-. You think it's
>wired to go though only one plug and out through the ground or something
>and back through the other plug, and to what?

To the other post on the coil.


> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> If the spark plugs are in series, there is only one path.

Re: Help with rough idle and acceleration - TIA
 

You finally got it! That's exactly how it works.

Hook your oscilloscope up to the positively fired cylinder and you will see an
inverted pattern.


In message <432C7C06.22B94AE6@cox.net>, "L.W." wrote:

> How could they be in series????? That's like +-+-. You think it's
>wired to go though only one plug and out through the ground or something
>and back through the other plug, and to what?

To the other post on the coil.


> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> If the spark plugs are in series, there is only one path.

Re: Help with rough idle and acceleration - TIA
 

Showing volt spikes, primary and secondary oscillations of a normal
six cylinder.
http://www.----------.com/oscilloscopeIgnitionTest.jpg
http://www.----------.com/oscilloscope.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

bllsht wrote:
>
> Right Jerry, almost. :-)
>
> The cylinder on compression stroke has a higher voltage demand since it has to
> overcome cylinder pressure and the hydrocarbons. This is easily seen using an
> oscilloscope.

Re: Help with rough idle and acceleration - TIA
 

Showing volt spikes, primary and secondary oscillations of a normal
six cylinder.
http://www.----------.com/oscilloscopeIgnitionTest.jpg
http://www.----------.com/oscilloscope.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

bllsht wrote:
>
> Right Jerry, almost. :-)
>
> The cylinder on compression stroke has a higher voltage demand since it has to
> overcome cylinder pressure and the hydrocarbons. This is easily seen using an
> oscilloscope.