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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 12-29-2015, 05:39 PM   #1
kyral
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SR20det goofy injectors and running rich

I just bought an Sr20det redtop (with coilpacks idk if that makes a difference) hatchback, and it runs a little rich.

I went to change my plugs and noticed that cylinders 1 and 2 use red injectors and cylinders 3 and 4 were using a light purple injector.

once i pulled the spark plugs it was obvious that this was atleast part of the issue

Spark plug 1 and 2 had light carbon build up and cylinders 3 and 4 had excessive carbon build up that left everything black on the tip of the plugs

obviously i need to get a set of matching stock injectors but it almost looks like the red low flow injectors might run at a better fuel ratio, but my fear is that when it gets into boost it might run lean

I Know the purple are the stock 370cc




Last edited by kyral; 12-31-2015 at 05:48 AM..
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Old 12-30-2015, 04:04 PM   #2
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