Ar Q wrote:

> Every morning when I start the cold engine of my old Honda, especially in
> the winter, the car started hesitantly and I can smell the unburnt gas. To
> keep the engine running, I have to keep pressing the gas pedal until rpm can
> itself sustain at 2k to 3k. When this car is new, the process took about two
> minutes and I don't need to press the gas pedal, now it takes five minutes
> or longer in cold days. The car acts normal after the five minutes of my
> morning blue is over. Also, the emission is somewhat blackish in that first
> five minutes. The emission turns to normal white steam after the rpm hits 3k
> then drops to normal 1k instantly. Does anyone know what causes the problem,
> and is it expensive to fix? Thanks.
>
>
Hmmm,
Time for a tune up.