Ok, I'm running out of ideas here. My car is running rich as hell. There's a nice big black spot of soot on my parking lot wall from my exhaust, and anytime I flog my car in first or second I fumigate the poor bastard behind me. That and my fuel economy blows and that's breaking the bank. I also have a funky idle, where it's usually smooth, but every "fourth beat" is rumpy.
I've swapped with a known good AFM, that didn't help any. Same with ICV. I've replaced just about all the vacuum hoses, that helped a bit. Last time I pulled my spark plugs out, they were covered in black soot, cleaned them out and that helped some. All injector O-rings have been changed, as well as my intake manifold gasket. All of this has helped the problem little by little, but it's still running a tad weird. I think my exhaust manifold gasket needs changing because I can literally hear it leaking, but would that lead to these symptoms?
Also, I don't know if it's related or not, but my throttle response is horribly slow. At first I thought it was slack in the cable, but I adjusted that and it's not that. It's almost like if when I initially depress the pedal, the throttle body doesn't smoothly open at the start and kinda just jolts open after enough pressure is applied. This is also affecting driveability, as in any gear, between 1400 and 2000 rpm, if only partial throttle is engaged the car will buck like mad. Full throttle is no problem though.
Any thoughts?
I've swapped with a known good AFM, that didn't help any. Same with ICV. I've replaced just about all the vacuum hoses, that helped a bit. Last time I pulled my spark plugs out, they were covered in black soot, cleaned them out and that helped some. All injector O-rings have been changed, as well as my intake manifold gasket. All of this has helped the problem little by little, but it's still running a tad weird. I think my exhaust manifold gasket needs changing because I can literally hear it leaking, but would that lead to these symptoms?
Also, I don't know if it's related or not, but my throttle response is horribly slow. At first I thought it was slack in the cable, but I adjusted that and it's not that. It's almost like if when I initially depress the pedal, the throttle body doesn't smoothly open at the start and kinda just jolts open after enough pressure is applied. This is also affecting driveability, as in any gear, between 1400 and 2000 rpm, if only partial throttle is engaged the car will buck like mad. Full throttle is no problem though.
Any thoughts?
Comment