Question about 1997 Mazda B-Series

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Keeps blowing 30amp fuel injection fuse - 1997 Mazda B-Series

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Check wireing to injectors may worn and blowing fuse

Posted on Mar 21, 2011

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The first place to start is with the fuel injectors, unplug all injectors and see if the fuse will blow, if the fuse doesnt blow then you know its in the injectors and then start pluging them in one at a time until you see the fuse pop and the one you plug in that pops fuse then thats the bad one, good luck.

Posted on Mar 21, 2011

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Posted on Jan 02, 2017

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SOURCE: fuel injecter fuse blow imeditaly when ignition turn on

sounds like a short in the wiring from the fuse and the fuel injector junction block. GM like most fuel injection systems control injector firing by the computer providing ground to each injector in pairs or individually. The fuel injector fuse provides power to the injectors using splices therefore enabling one wire to feed 6 injectors. A shorted wire at any of these wires will blow the fuse. On one rare incident I found a faulty computer caused the fuse to blow. A shorted injector will just cause a rough running problem due to the injector stuck either open or closed.

Posted on Aug 05, 2009

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