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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 10-08-2012, 11:40 PM   #1
Natedoggsk8
 
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Rb25 s2 running very rich an no power

I have an rb25 in my s14. stock turbo, isis intake manifold, big front mount, q45 throttle body, open exhaust and downpipe with a Mines ecu. Recently replaced the plugs, oilchange, and an over all visual check up. I bought this car in april with all these mods and all the work already done. I havnt changed a thing accept what i've mentioned engine wise.

Tonite as I was driving somewhere I decided to light up the tires get the car a little sideways, nothing big really but as I straightened out the car died. I cranked it back up and it didnt want to stay idle. I give it some gas and decide to just start going cuz the car does this from time to time once warmed up. As I start to go I can only barely hit the gas without it bucking and sputtering ( basicly running terrible ). when I pull over in a parking lot I turn the car off, collect my thoughts then cranked it back up. It barely wants to idle but it will and I walk to the back of my car and I smell gasoline bad and see a bunch of black smoke. I go under the hood and nothing visibly has changed. I'm really not sure where to begin. I went back earlier after searching the forums for ideas. I tried to crank it and it seemed to run fine for about 1-2 secs then died. Cranked it again and it was back to the way it was. I know one thing is for sure that the new spark plugs I put in were gapped to .28 as I always have done but I'm pretty sure after the short trip to that parking lot after this occured that I need new plugs or need to clean these. It was sending black smoke out the exhaust and the smell of gasoline very strong
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Old 10-09-2012, 05:05 PM   #2
godsmack
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Did you check to see if you had a boost leak?
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Old 10-17-2012, 07:15 PM   #3
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Nate, did you ever find out the problem? I'm having the same issue. One guy is telling me it's a tune issue but I'm leaning more towards something else.
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Old 10-17-2012, 10:08 PM   #4
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if you popped off one of your boost pipes, it will do that. It happened to me before. Go check that and your maf. Make sure everything is sealed good
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