stuartc44 Posted April 18 Share Posted April 18 I have a vectra c with z22yh engine, beleive it or not I am having some fuel issues. White smoke, strong smell of fuel, mis firing and undrivable but it occasionally clears and runs fine. I beleive I should have a constant voltage to the injectors and the othe side switched to ground. If I'm right, my first question is what voltage should I have? secondly should this be ignition on or engine running or both. And finaly to clarify this is to battery negative? Quote Link to comment Share on other sites More sharing options...
Vauxhall Owners Club Posted May 10 Share Posted May 10 Yes that is correct and the earth pulses the injector Cannot remember exact voltage but think (distant memory) that it is battery voltage (12 volts upwards) Quote Link to comment Share on other sites More sharing options...
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