[V8] sanity check, what, from a V8Q owner?

[Tony and Lillie]

They fire two at a time. That is what the hall sender is used for. The 
computer uses the hall sender to determine #1 TDC. Which is one of the 
reasons for the slight hesitation if the hall sender is unplugged.

As fro wasted spard, you are thinking of a COP setup. With a distributor, 
you can only fire each cylinder once per revolution. The width of the rotor 
is what gives teh ECU adjustability. But, only a certain amount. Basically, 
if the coil fires, the spark is going to the cylinder that the rotor is 
pointed at. And, each coil fires four times per engine revolution.

Tony Hoffman


----- Original Message ----- 
From: "Scott Simmons" <indischrot at gmail.com>
To: "urq" <urq at pacbell.net>
Cc: <v8 at audifans.com>
Sent: Tuesday, March 18, 2008 8:56 PM
Subject: Re: [V8] sanity check, what, from a V8Q owner?


> Are we saying that the V8 uses wasted spark?  Also, what times the
> injectors?  I assume they're batch fire.  Which fire at what time?
>
> ~Scott S.
>
> urq wrote:
>
>>For an engine with a distributor and an even number of cylinders it 
>>doesn't
>>matter whether you're at TDC compression or exhaust, the time to fire the
>>coil(s) is the same.  My V8 ran for a long time with a no Hall Sender 
>>signal
>>code.  Odd number of cylinders, or coil per plug then the ECU needs to 
>>know
>>whether it is exhaust or compression.  An I-5 will not start if the Hall
>>Sender is bad ... the PT in a V8Q will ...
>>
>>Steve B
>>San Jose, CA (USA)
>>
>>-----Original Message-----
>>
>>
>>so who does if not the Hall sensor? ;)
>>
>>73
>>
>>Bastian
>>
>>
>>Scott Simmons schrieb:
>>
>>
>>>The ignition sensor pin the flywheel will only tell you if you're at
>>>TDC, but not if it's compression or exhaust, BTW.
>>>
>>>
>>>
>>
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>
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