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Originally Posted by tsupra89
i think that you need to def check fuel pressure more then spark what sounds to me like its flooding the cylinder. supras come with a stock fuel pressure regulator and yours might have gone bad and when you are gunning it as i would expect that the fuel pressure regulator is malfunctioning and its causing it to flood the cylinders. hook up a fuel gauge and see the fuel pressure and make shure its around what it should be. the rev it up to 4 grand and see if it increases. thats what i would check first.
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This not how you test the fuel pressure. Also, it would be impossible to 'flood' the engine with fuel at 4000rpm because of a bad FPR.
"Starve" the engine would be the results.
Start here:
http://auto.howstuffworks.com/fuel-injection.htm