Is electronic fuel injection better than carburetor?
The electronics used in the system will calculate this information and constantly adjust. This type of controlled fuel injection results in a higher power output, greater fuel efficiency and much lower emissions. One of the main issues is that these systems are sophisticated and will cost much more than a carburetor.
How do I know if my carburetor needs Rejet?
A clean spark plug means you can skip the rejet. A black, sooty-looking spark plug means you’re running rich with too much fuel in your mix. If you see white residue, that means you’re running lean with too much air. In both cases, you need a rejet.
What’s better carburetor or fuel injection?
While the carburetor may have been around for over a century, fuel injection is a clearly superior alternative, delivering better power, fuel economy and lower emissions.
Does main jet affect idle?
The main jet does not effect the jetting for starting and idling. It plays no part on low RPM or mid RPM jetting either. The safest way to get the main jet setting as near correct as possible is to richen the main jet setting up until the engine begins to lose power and not rev to as high of RPM as before.
When do you need a smaller jet in a carburetor?
When the operating altitude of the engine will be 2000 feet higher than your normal altitude, you’ll need to insert a jet one or two sizes smaller than the size currently installed in the carb, which reduces the amount of fuel entering the engine to match the reduced level of oxygen in the air.
How is the jet gasket on a carburetor identified?
Unbolt the fuel bowl bolts from the metering block of the carburetor. Pull the bowl away from the carburetor, preserving the bowl gasket. The jet (s) are now exposed and can be identified by their center orifice, screwed into the metering block.
What kind of jetting does a Holley carburetor need?
When it comes to calibration, Holley carburetors are base line jetted at sea level at 70 degrees F. A few specific carburetors require stagger jetting, but for the most part, the factory installed jets will be within a couple of numbers of being right.
Where are the Jets located on a 4160 carburetor?
The jets are accessed by removing the fuel bowls on each end of the carburetor. But there is an important exception: 4160 carburetors (such as most O-3310’s and O-1850’s) do not have replaceable jets on the secondary side. In place of the jet block is a special metering plate.