Since I had them out I leak tested my injectors. My technique
was to connect the injectors one at time to a rig that allowed
me to pressurize with air using a bicycle pump. I pumped
it up to 40 psig and then sprayed the injector tip with a
dish soap solution. Worked nicely.
Ten injectors showed no signs of leakage. Two showed slight bubbling,
but not enough to cause noticeable pressure decay while watching my
gauge for a few minutes. My guess is if fuel were present instead of
air, which would require a more sophisticated test setup, it would be
a very small dribble.
So, now to my question. How leak-tight do they have to be? Should I replace
the two injectors?
BTW, who’s got the best deal on injectors now in case I do decide to replace
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