Hello, could someone confirm me whether Bosch/Lucas advices for
their fuel injectors a certain hook-up polarity?
As I have found out that the manufacturer for those Tecalemit fuel
valves on a twin tank setup (Series III) recommend a certain
connection polarity; I was wondering whether this also counts for
the fuel injectors? I’m just about replacing the injectors cracked
harness, and found only 4 with an inverted hook-up polarity. So
there could be a defenite concensus? As I’m very aware of that for
the injectors coils, normally the polarity doesn’t matter; I anyhow
measured for each 12 injectors individually a constant difference
for one polarity to the other. Let’s say + & - gave 5.3 peak Amps,
where - & + started at 4.8 Amps peak. Both quickly decaying to a
steady 3.3 Amps, giving a firm click. I did repeated these
measurements, with a professional Fluke Scope/multimeter. All was
performed with a well stabilized 13.6Vdc and a 1ohm resistor in
series to limit the injector coil current. The engine not running,
but with the pump running to maintain steady fuel rail pressure.
Nevertheless, I remember once somebody remarked there should be a
small + sign on the injector connector body, I can’t notice any.
Could this initial peak current difference signify a certain
injector opening time difference? Dunno, but I just wanna be
consequent in wiring them all correct and even the best way
possible. Just a thought, any ideas?
Harry '87 HE Sovereign Belgium–
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