I am new to this site and think I am in the right place to be asking questions.
I have a 88 fox that I converted the trans to a 5 speed, and slid another motor down in. Last week it was running fine. I had two injectors leaking so I replaced all of them, now I have no leaks. But I installed 24lb injectors in on a speed density system. Found out that wouldn't work and installed a mass air system on it hoping to fix it. It didn't and now it will run but idle's like there is a vacuum loose although I have thourghly checked all of them. It throws black smoke when I step on it and from what idle I do have if I step on it it will studder out at around 3500 and kicks black smoke everywhere. When I unplug the mass air it doesn't affect the idle one bit. I have even checked it with a known good sensor and the tps. Timing is also set at factory specs. Neither fixed the problem. I don't want to blow my spark plugs out while driving. Can anyone give me a hand on what I should try next.
I have a 88 fox that I converted the trans to a 5 speed, and slid another motor down in. Last week it was running fine. I had two injectors leaking so I replaced all of them, now I have no leaks. But I installed 24lb injectors in on a speed density system. Found out that wouldn't work and installed a mass air system on it hoping to fix it. It didn't and now it will run but idle's like there is a vacuum loose although I have thourghly checked all of them. It throws black smoke when I step on it and from what idle I do have if I step on it it will studder out at around 3500 and kicks black smoke everywhere. When I unplug the mass air it doesn't affect the idle one bit. I have even checked it with a known good sensor and the tps. Timing is also set at factory specs. Neither fixed the problem. I don't want to blow my spark plugs out while driving. Can anyone give me a hand on what I should try next.