Kia cylinder numbering system

Reed > wrote in news:HJqdnYvHc-
:

>
> Cylinder #2 Misfire Detected
> What does that mean?
>
> A P0302 code means that the the car's computer has detected that one
> of the engine's cylinders is not firing properly.


That's an inaccurate description. "Misfire" means that that cylinder isn't
shoving the crankshaft around with the same force as the other cylinders.
The ECM interprets and reports that mismatch as a "misfire".

The problem here is the term "misfire", which peple tend to associate with
things like spark plugs and firearms. But in the OBD-II environment,
"misfire" has the very different definition I gave above.


--
Tegger

On 01/19/2012 04:45 AM, Tegger wrote:
> wrote in
> news:22834403.2488.1326912604557.JavaMail.geo-discussion-forums@prmu37:
>
>>
>>>
>>> You would be wise to scan the engine with an OBD-II
>>> code reader for the many relevant parameters, before
>>> doing any more work.
>>>
>>>
>>>
>>
>> Thanks Tegger!!
>>
>>
>> I do have an OBD-II code reader (inexpensive HF model). Are you
>> suggesting that a better reader would give me more detail than P0302?
>
>
>
> Yes. A better reader, such as a laptop-based one, would give you most or
> all of the many engine parameters, which may help lead you to a solution.
>
> Here's the one I have:
> http://www.obddiagnostics.com/
>

wtf still has a laptop with a serial port????


--
nomina rutrum rutrum

On 01/19/2012 04:50 AM, Tegger wrote:
> > wrote in news:HJqdnYvHc-
> :
>
>>
>> Cylinder #2 Misfire Detected
>> What does that mean?
>>
>> A P0302 code means that the the car's computer has detected that one
>> of the engine's cylinders is not firing properly.
>
>
> That's an inaccurate description. "Misfire" means that that cylinder isn't
> shoving the crankshaft around with the same force as the other cylinders.
> The ECM interprets and reports that mismatch as a "misfire".
>
> The problem here is the term "misfire", which peple tend to associate with
> things like spark plugs and firearms. But in the OBD-II environment,
> "misfire" has the very different definition I gave above.

it's not simply a "moving" thing dude. or at least, shouldn't be on any
half-way competent management system. a partially blocked injector
requiring a wider fuel pulse width for example gives a completely
different crank speed fluctuation signature - especially in the presence
of a knock sensor - to a misfiring plug.


--
nomina rutrum rutrum

On Jan 19, 10:01*am, jim beam > wrote:
> On 01/19/2012 04:45 AM, Tegger wrote:
>
> > A better reader, such as a laptop-based one, would give you most or
> > all of the many engine parameters, which may help lead you to a solution.

This is true.