so i think i have a failing injector. random misfire

[gotboost1099]

so my car started randomly misfiring. when i ran it hard it would stop for a while. than when i idle around and go again it would miss again. i put lucas fuel treatment and injector cleaner and it helped but it still would miss every one in a while. it never misses long enought for me to check witch injector it might be. any ideas how to diagnose this

[Zwicked]

The injector itself will likely not be intermittent. Pull the connectors and see if there is greenish corrosion in the connector and on the injector pins. While the connector is off, use a multimeter to check the apparent condition as they should measure between 10 and 14 ohms to be in spec. If you find corrosion all the other 8 or so connectors with the spring clip need to be take off and all corrosion removed.

[Ba11erz]

I've been told that the electrical system in the Z32 is one of a kind. One thing can lead to another.

How certain are you to know it is in fact a faulty injector?

If you have a volt meter go ahead and perform the test as Zwicked suggests however, don't let the troubleshoot process stop there because park plugs and their connectors often go unnoticed. I went down the same path when trying to determine why I had intermittent power reduction and erratic hesitation. Out of frustration I decided to get the ConZult and it really did give me a good picture of what errors my ECU was trying to fix. The software is intuitive enough for you to see if you really are having injector failure; particularly which one. I had a combination of a boost leak and two faulty injectors. I was then able to correctly identify and replace.

Bottom line, without proper testing and tools its better practice to check/double check all your electrical connections...especially for corrosion created by condensation. Today, 49 United States are suffering from inclement weather (snow & sleet) which can be a parasite for an unprotected Z32 engine bay. I'm certain electronic functionality is the first culprit for engine malfunction.

Please post if you were able to identify the issue.

[vape-one]

My old Z did what you are talking about an it was because a fuel injector connector kept coming loose,, A shot of super glue did the trick...

[gotboost1099]

i just did the tt swap less than a month ago all brand new connectors and i individually cleaned the post on the injectors. no corriosion i live in fl no snow here lol. i filled it up and put another botttle of lucas treatment in it and it hasnt done it sense. im feeling it was bad gas. or is bad gas a myth?

[gotboost1099]

oh and i alredy ohmed them when i did the swap they were all 13

[vape-one]

No it's no Myth.. I didn't know just how much gas has an effect. Until I forgot to drain year old gas outa my new N/A, that had sit a while before I bought it, An as far as snow is concerned i'd move down south but it's snowing down there too... Florida is great tho..