: Bob...I made a bit of a mistake i building my
: fuel rail and wiring harness. I pulled apart
: the two harnesses I had in order to build
: one,ad neglected to find out which set fires
: first.
:
: Both my harnesses have the same wire colors,
: brown, black, and blue, The brown is common
: to all injectors. What I need to know is
: which "set" fires first in the
: firing order, the black-wired set or
: blue-wired set? (Hopefully, you've figured
: this out while doing your conversion)
: Roger

: Roger,
: What I did was connect one group of wires to
: injectors 1, 2, & 3 and the other group
: to injectors 4, 5 & 6. So, I can't tell you
: which color went where. However, I don't think
: that it makes any difference.
: Bob D

:
: *************************************************
: Hmmmm....interesting. I'd have thought it would
: make a difference. Seem to me that it would
: have to be re-arranged to correspond with
: the slant's firing order, rather than the
: v-6's.
:
: I think I'll try to hook it up so that 1-5-3
: gets triggered first, then 6-2-4. Seems the
: fuel would spend less time in the valve
: pocket waiting for the valve to open that
: way.
: Just my thought processes.
: Roger

: What I was saying in my recent response was
: that I don't think it matters which group of
: three wires goes to which group of three
: injectors.
: Bob D

: Bob, I suggest you may be wrong, but not for
: the reasons you might think. I sat down and
: charted out the events going on in the
: engine at the (presumed) moment of injector
: firing, and it looks like Buick was trying
: to ensure the valves were either open on
: intake, or closed during power stroke at
: spray event.
:
: Presuming that #1 (Buick) is time-injected from
: the ignition signal, then at injection
: event, cyl's 1&3 are intaking, and 5 is
: power-stroke, and vice-versa. Conversely, it
: works out that way for 2-4-6, also.
:
: If one wires the injector harness so that 1,2&3
: fire together, and 4,5,&6 fire together,
: with the blue wire going to 1,2,&3, then it
: works out similarly. 1&2 are filling, while
: 3 is making power, and 4&5 are filling while
: 6 is making power, and vice-versa.
:
: In any case, I'll be hooking my harness up very
: similarly to yours.
:
: Roger

:
: **************************************************
: Bob, I suggest you may be wrong, but not for
: the reasons you might think. I sat down and
: charted out the events going on in the
: engine at the (presumed) moment of injector
: firing, and it looks like Buick was trying
: to ensure the valves were either open on
: intake, or closed during power stroke at
: spray event.
:
: Presuming that #1 (Buick) is time-injected from
: the ignition signal, then at injection
: event, cyl's 1&3 are intaking, and 5 is
: power-stroke, and vice-versa. Conversely, it
: works out that way for 2-4-6, also.
:
: If one wires the injector harness so that 1,2&3
: fire together, and 4,5,&6 fire together,
: with the blue wire going to 1,2,&3, then it
: works out similarly. 1&2 are filling, while
: 3 is making power, and 4&5 are filling while
: 6 is making power, and vice-versa.
:
: In any case, I'll be hooking my harness up very
: similarly to yours.
: Roger