What is a pilot jet?

[ravelcop]

Guys,

A taxi driver told me once to install a pilot jet on my carburetor to decrease my van's fuel-consumption. I'm interested but somehow skeptic, I would want to solicit the following info from you guys:

1. how it works
2. what are the real benefits
3. negative effects
4. how would i know if the mechanic is good in doing this
5. estimate cost

Please guys, i really need your inputs. My dad has already decided to push through with it this coming weekend and I would want him see for himself first what experts has to say about it. Thanks

[box_type]

dalawa yung jetting sa loob ng carb, isa dito (secondary) pinapalitan ng mas maliit ang butas, kaya mas konti gaso pumupunta sa makina

[BoEinG_747]

di ba ito ang sinasabi nakakatipid

pero sakal ang takbo ...

kasi nga pinaliit ang jet na dinadaanan ng gaso..

so it means the lesser the gas that flows in the jet .

the lesser the power the machine u have ....IMO

[vinj]

It entails changing the primary and/or secondary jets of the carb to smaller ones. It lessens fuel consumption but it will also affect performance and this may be dangerous in some cases (highway passing, climbing mountain roads, etc.) so better think it over pretty well beforehand.