Tuning carbs is very important for the maintenance of cars. The carburetor is one of the most important parts of your engine. It is the component that blends the fuel with air into a gas suspension, in order to be utilized by the internal combustion engine of your car. When you press the accelerator, it increases the flow of air, and therefore the amount of fuel that is mixed with the air.
Sometimes, possibly due to overuse or to old age, the carburetor may stop working properly. Or they just want to make their car’s performance better. At this point, tuning carbs can increase the carburetor’s optimal performance.
Before tuning your carburetor, you have to make sure your car is prepared for it. Most things need to be replaced or renewed. This includes getting a new air filter, just to make sure that the air is clean and the system is not clogged up and it’s running properly. You will need to get fresh gasoline for your engine. This is because gasoline breaks down over time so you will want new and fresh gasoline to be running optimally when you tune your carburetor.
Your carburetor is a relatively simple device, compared to more modern electronic fuel injection systems. On every carburetor, there is a sight hole to check if the level of fuel is optimal. If you don’t see the fuel reaching up to the base of the sight hole, then chances are the fuel level is low. The solution to this problem is easy: merely fix the float and adjust it so the fuel level goes up.
Don’t ever turn the primary float bowl to secondary. Don’t turn the secondary bowl into primary either. That will basically screw up the levels of your carburetor. The secondary is usually lower, in order to keep the carburetor fuel from spilling when you are pushing on the brakes too much.
Gasoline overflow is also dependent on the internal pressure. In order to do tuning carbs successfully, the pressure must be around 4psi to 7psi.
If the carburetor is dripping with fuel and the gasoline level is spilling, this is not as much a problem of the float level but of the seat assembly and needle. At this point, no amount of carburetor tuning can really help. There is nothing much you can do but totally replace the carburetor itself.
If fuel is left sitting too long while the car is on idle, then the fuel tends to start becoming stale. To remedy this, idle circuits are installed on the carburetor to keep the fuel flowing even if the engine is on stand-by. This circuit is completely adjustable according to your needs, and the metering is performed by three functions: Idle air bleeds, feed restrictions and mixture screws.
These are just some things you need to consider when tuning carbs. Carburetor tuning can be very good if done properly. It effectively optimizes the performance of your engine to your desired needs. Try tuning your car’s carburetor and see how effective the results could be as long as you do it correctly.