if it is a vortec, there is a fuel line under the upper intake that goes from the manifold to the injector. check it for cracks and leaking or the injector itself.
EGR Valve
my 1990 300zx is idling rough what could cause this?
I would suggest a new set of plug wires.
My 1986 Honda Accord Dx just started idling rough and dieing at turns and stops it is a carburated 2.0 witha maunal transmission
If you have replaced plugs and wire most likely one of your coil pack usually run about $50
Rough idling is whenever the vehicle's motor "misses" or does not fire causing an imbalance and a loss of rotation reducing the motor's power and causing excessive shaking.
Rough idling and sometimes kills the motor. It could also trip the check engine light to come on.
Motor is idling rough.
Yes it could and it will cause rough idling and a missing when giving it gas.
It feels rough, really rough.
mars feels rough and bumpy
timing off
why is my ford sport trac run rough at idling. Being that the check engine light is on, start with having the codes read. Your local auto parts store can help with that at no cost.