windwizard Posted April 9, 2018 Share Posted April 9, 2018 Have obd missfire cyl 4. Want to change injector. How to tell if I need black dot or blue dot without tear down. Link to comment Share on other sites More sharing options...
adamzan Posted April 10, 2018 Share Posted April 10, 2018 You cant. You have to remove the connector on an injector and the dot will be there. I just went through this on the weekend actually . Link to comment Share on other sites More sharing options...
Mrelcocko Posted April 17, 2018 Share Posted April 17, 2018 I'm buying injectors for my 97 Q. Where's the dot located? I'm being an idiot. Can't find the dot Sent from my SM-S737TL using Tapatalk Link to comment Share on other sites More sharing options...
fixinto Posted April 18, 2018 Share Posted April 18, 2018 on 3.3 injectors they should be on the top of the injector. Anyone know the real difference between the colors? Is it flow or length or pin outs or what? Pat Link to comment Share on other sites More sharing options...
adamzan Posted April 19, 2018 Share Posted April 19, 2018 Apparently it is the spray pattern that is different. I know some have mixed without issue. But if you can use the same ones, I would. Link to comment Share on other sites More sharing options...
Slartibartfast Posted April 20, 2018 Share Posted April 20, 2018 My '93 has one mismatched (don't remember if it's blue or black). It doesn't seem to care. It's been like that at least since I got it. No reason not to match them if you can, though. Link to comment Share on other sites More sharing options...
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