what sort of fuel system? carburettor or electronic injection?
I have 1998 a Lincoln town car with the same problem.. It idles rough when you start, then smooths out once it warms up and you give it gas. From what I am reading its either an oxygen sensor or you have vacume leak in one of your hoses by the manifold.
a longer cam shaft will make a car idle rough
I have 200,+ miles on the car. I change the plugs and wires yet it runs rough at idle and runs smooth at crusing speed. What can i do?
Check fuel and spark
it is in auto gear
The car will start but it will run rough and will probably overheat and cause worse problems.
I had the exact same problem. I own a 1984 Mazda RX-7 GSL-SE and what i did was bought a new starter. A new starter actually will start a flooded RX-7. But if you dont want a new starter then push the car and the car will start. now the rough start is related with the seals and oil. the oil is low or bad and/or you need new seals.
I get the gist of the question. Could be a plugged fuel filter or a plugged catalytic converter. Try the fuel filter first as it relatively cheap.
after start car smell gas why?
No it does not take a gallon of gass to start a car. To start a car it doesn't use any gas.
it depends on many things. if is an old car carburated and it is rough at idle, then mixture could be a factor.
vacuum leak