GoinTopless240 wrote:1) will the engine start... if yes, according to the FSM the engine speed will not rise about 2400 rpm when the computer senses a malfunction in the MAF.
It will? or will not rise to 2400rpms? I believe your thinking about unplugging the MAF. Anyways, this is what i got from 240sx.org on the FPR
240sx.org wrote:To check:
Release the fuel pressure in the system by removing the Fuel Pump fuse and start the engine. After it stalls, crank it a few more times to release the fuel pressure.
Install the fuel pressure gauge on the inlet side of the pressure regulator, start the car and check for fuel leaks.
At idle, the pressure should be approximately:
235kPa / 2.4 kg/cm2 / 34 psi.
Disconnecting the vacuum hose, you should see:
294 kPa / 3.0 kg/cm2 / 43 psi.
After getting your yah-yahs out over that test, connect a hand vacuum pump to the regulator and start the engine. As the vacuum INCREASES, the fuel pressure should DECREASE. If this is not the case, time for a new pressure regulator.
Anyways, here is an overview of what is going on. She cranks up just fine and idles great every now and then with very little black smoke out the pipe. Other times however, she likes to idle rough and hover up and down from 1300rpms to 700rpms and that is when there is ALOT of white smoke coming out and it actually goas around the car and flows RIGHT past me in the seat. Honestly, im stumped. It also seems i lose the most gas when starting up the car. I spent a quarter tank yesterday just going to and fro school.
I'll take a video with my phone when i get home from work tonight. Hopefully a visual will be better.