Are carburators better than fuel injectors?

Question

i heard that injectors just make your engine start easier and that carburators give u a steady fuel flow

Answer 1

injectors are far supieior to carburation. they are cleaner burning, save milage , produce better horsepower, and more dependable. for streetabilty injection. in drag racing top fuel and funny's dont allow Fuel injection i dont think they allow pro stock injection either. one thing that may be an issue is metering the injection for every engine may be too difficult so carbs work easier

Answer 2

It depends upon who you ask.  I have rebuilt carbs for years and still do on occasion and Ive studied and repaired fuel injected engines for many years also....so here is MY opinion since you asked just anyone...

Carburators are more user friendly for modification to your needs and what you are trying to do.  They dont require reprograming or as many sensors obviously.  Thus if you were rebuilding some engine or car to your ideal design, a carburator would be the most convienient route in fuel supply.

However with fuel injection you have a MORE PRECISE control of your fuel trim (that is why an engine starts easier after cold or sitting a long time with FI rather than a carb).  Also the idea is to "atomize" the fuel as fuel does not burn but only the fumes off a drop of petro.  Thus the smaller you can break up a measured volumn of fuel the more surface area and the more fume burning area you have, then guess what.....better mileage!  So I perfer the better control, better atomization, better mileage, easier more reliable starts ups, etc with fuel injected models.  Oh, another thing is there are less moving parts, linkage, gaskets, o-ring seals, etc to go bad then on the carburators.   One last thing,  atmospheric pressure.  This has a great effect on carburated engines on the atomization of the fuel, and its air/fuel ratio making it richer or leaner supply to the engine.  (The higher the atmospheric pressure the richer the carburator).  FI is unaffected due to a sensor called a baro-sensor or map-sensor which measures the atmospheric pressure and compensates the rich-lean ration via fuel injector on/off time (duty cycle).

The carbs would give you a more steady fuel flow but are you really going to notice the 1/10 sec. pulsations of an invector?

Hope this helps....

Answer 3

carburetors are better for racing ,but for every day driving fuel injection is a lot better and more efficient also,some carbureted cars will start faster than fuel injected cars will though it all depends on the carb and who adjusted it,good luck.

Answer 4

Depending on the state of tune of the car, and the quality and regularity of maintenance performed on it, carburettors can achieve performance almost as good as electronic fuel injection.

Ultimately, you will never get exactly the same performance out of an engine using carburettors compared to the exact same car using a fuel injection system.

Carburettors go out of tune over time, whereas fuel injectors do not.

Having been brought up with e.f.i., I find carburettors to be unnecessarily complicated. With fuel injection, you just hookup your laptop, fire up the tuning software and fiddle around with the inector pulse widths and timing until you get the exact air/fuel ratios you want. Then you forget about ever having to touch them again, until years later when an injector dies or the pressure regulator craps itself. Then it's just a simple parts swap out, and you're on your way again.

Answer 5

in my opinion carburetors are easier to work on and rebuild.  fuel injection is supposed to be the latest and greatest.  I don't think you can buy a car with a carburetor anymore.  the fuel injection system actually calculates how much fuel to use according to how much acceleration is applied. carburetors are not that sophisticated.  they have a couple of adjustments the biggest one is air/fuel mixture.

Answer 6

Fuel injection is far superior to a carburetor.

All a carburetor uses to meter fuel is engine manifold vacuum drawing fuel through a predetermined o*****e (jet).

Electronic fuel injection sprays fuel under high pressure directly at the open intake valve.  The amount of fuel is regulated by a computer using several sensors located on the engine and a predetermined fuel curve programmed into the computer.  This is a much more accurate way of delivering fuel to the engine.

As an example, many 60s through 70s small block V8s produced the same performance as a V6 does today.  The modern 4 cylinders give the same performance as the old 6 cylinders did.

Anyone who remembers driving a carbureted engine remembers how much a cold engine would stumble in traffic.  They were very easy to stall.  With a modern fuel injected engine you can simply start it and drive off, even if it is well below freezing, and it won't miss a beat.

Today, carburetors are mostly used for racing and hot rod applications.  They are more easily regulated and inspected by the racing sanctioning body.  They are more easily tuned by armatures.  And they are less expensive than fuel injection.

A properly tuned fuel injection system will almost always out perform a properly tuned carburetor.