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fuel injector # 1 issue


Dec 26, 2013
boise, id
both wires to on the clips have power to them except # 1. i tried a known working resister pack and same issue. ive also have tried 3 known well working ecus( no leaks or bad boards) and same issue. i have power tested anything that i can think of. i tested the power wire to the all injectors directly at the ecu. all injectors have constant power except #1. so directly from the ecu the power is sh*t to #1. what would be the deal?

oh and this problem seems to be intermittent as well.

stock 450cc, stock ecus


Well-known member
Aug 30, 2005
Savannah, GA
Check all wiring from the resistor box to the injectors. Sounds like a break or bad wire. I had bad sensor ground wire on the vr4 I picked up almost 2 yrs ago and after exposing the wire completely everything still looked fine with it. Turned out to be broken internally. Pain in the arse to find issues like that sometimes. Good luck.
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