Guys, could I please get some advice? I recently put my engine back together after I upgraded the injectors and got the valve covers painted.the problem I'm having is when I turn the car on the idol is a little rough but it won't exceed 3000 rpm.I'm assuming there is a leak somewhere so I do a test to check for leaks in what I found was that its leaking near the harmonic balancer (the crank pulley). when I pull the mass airflow sensor plug it allows me to exceed the 3000 rpm limit with a car does turn off. I'm only get one code and that's the knock sensor. I have 5 MAY'S lying around, either their all bad or that's not the problem I don't know what to do now? Please help, thank you