WickedWild Posted May 17, 2007 Share Posted May 17, 2007 In my ’92 240sx I just lost #3, stock KA engine. Compression is at 150 swapped plugs and wires still the same. I just got done cleaning the intake manifold with a slow drip into the intake manifold. How can I test the injector? I did not put any injector cleaner in it, and when I finished the cleaning it ran great. I let it sit for an hour and after starting it up #3 is dead. Suggestions? The plug is black and the rest are white… Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 17, 2007 Share Posted May 17, 2007 Plug is black? Sounds like the injector might be stuck open. Quote Link to comment Share on other sites More sharing options...
WickedWild Posted May 17, 2007 Author Share Posted May 17, 2007 It misses at iddle or at wot... Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 17, 2007 Share Posted May 17, 2007 Are you sure it's missing? Missing implies no spark which would leave the plugs wet, but not black. Quote Link to comment Share on other sites More sharing options...
WickedWild Posted May 17, 2007 Author Share Posted May 17, 2007 I say it's missing, because if I unplug the wire from the cap and the rough idle dose not change. But I know I'm getting spark into the cylnder. The idle changes when any of the other 3 plugs get unpluged. Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 17, 2007 Share Posted May 17, 2007 Have you checked the inside of the cap? Make sure it's clean and the contacts aren't worn down too far. Also look for any marking or debris in there. just to give you an idea of how sensetive a distributer can be, an old trick to mess with someone was to draw a line inside the cap with a pencil. The lead would scater the spark and make it run like ♥♥♥♥. Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 17, 2007 Share Posted May 17, 2007 Haha...Sorry, just got your myspace bulletin, followed the link and ended up here. Thought it was funny...lol Quote Link to comment Share on other sites More sharing options...
WickedWild Posted May 17, 2007 Author Share Posted May 17, 2007 Have you checked the inside of the cap? Make sure it's clean and the contacts aren't worn down too far. Also look for any marking or debris in there. just to give you an idea of how sensetive a distributer can be, an old trick to mess with someone was to draw a line inside the cap with a pencil. The lead would scater the spark and make it run like ♥♥♥♥. new cap and rotor, all good there... see why I'm stumped... Quote Link to comment Share on other sites More sharing options...
wingman Posted May 18, 2007 Share Posted May 18, 2007 did you try grounding the plug outside the cylinder to see if it has spark? If it's got spark, and compression is good, go down to autozone and see if they have an injector pulser and fuel pressure tester. You should be able to rent the tools for a small amount if not free (at least with the one here, anyway). Quote Link to comment Share on other sites More sharing options...
WickedWild Posted May 20, 2007 Author Share Posted May 20, 2007 Bad injector, $20 for an Altima injector and it's all good. Quote Link to comment Share on other sites More sharing options...
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