car cuts out at 4000 rpm

[mrnickleye]

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.

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