my z hesitates at low rpm but it slowly picks up speed 1987 300zx?

[vonc05]

my 1987 300zx picks up speed slowly new injectors fuel rail harness all new no mis fire what could it be?

[nghtrain88]

all cars make more horsepower at higher rpms

[vonc05]

It seems like it don't want to pick up speed but it seems to be in a strain then it frees up an takes off!

[nghtrain88]

how about basic maintenances such as spark plugs/coil packs all firing in spec? dirty air filter? clean throttle bodies? if so have you done a compression test to make sure all cylinders check out? my car seemed to lag at lower rpms as well when i first got it and i soon found out on #6 cylinder the connector was not plugged into the coil pack so it was running on 5 cylinders

[AZNiNjARaVeR]

I had a similiar problem with my 1991 300zx na.It was my injector connections and injectors needed cleaning because they were all corroded and i had my spark plugs changed to NGK's because supposedly the bosh ones suck for the engine LOL

[nghtrain88]

yeah, stick with NGK plugs. also use some diaelectric grease on the connectors to keep moisture out and ensure good contact.. also use a fuel injector cleaner occasionally

[jeramie411]

ngk all the way