recently, my 280zx seems to be stumbling when i try to drive it in the morning. i step on the gas and there's just no power coming out of it... not too fun trying to drive across a busy street with no light or sign. this seems to only happen in low rpms. it's like once i get past a threshold, it runs great. i've done a small tuneup on the car since i got it last month- plugs, wires, dizzy cap, and rotor. replacing the air filter very soon. oil was done right before i got the car.

while writing this, it occured to me that i should replace the fuel filter. other than that, what could my problem be?

 

do you let it warm up in the morning?????

 

change out your fuel filter first.. and the fuel pressure regulator as well.. you might also want to check your AFM.. take off the rubber boot and spray some carb clraner to loosen up a sticky air flap.. i had a simillar problem with my car a few years back and it turned out to be a dirty afm. you might also look for any vacuume leaks as well...