I would say the most common problem is a clogged fuel filter.. A regular addition of fuel system cleaner like STP Injector Cleaner, or Techtron fuel system cleaner can help keep your injectors clean. It can also cause an injector to stick open and send too much fuel into the engine. Make sure you follow your manufacturers recommendations as to when you should change the fuel filter. Your car will feel sluggish and sometimes refuse to run if there is enough water in the gas. Octane rating tip!!!! Putting super in the tank will not get you any more performance or gas mileage unless specifically recommended by your cars manufacturer.. This is only necessary when you let your injectors get to a point where they can not be cleaned by a store-bought product. Symptoms include sputtering at high speeds or engine not starting at all. Gas stations, which are not affiliated with one brand of gas, tend to get whatever is left at the end of the day from the delivery truck.

 

Next most common problem is the fuel pump failing. The fuel injector is basically a tiny electric valve, which opens and closes with an electric signal. Regular use of a good in-tank cleaner will keep you from having to pay for this service. The engine will not run right, plus the water will promote rust in the fuel system. Instead of a carburetor to mix the fuel and air, a computer controls when the fuel injectors open to let fuel into the engine.. Fuel pump: On newer cars the fuel pump is usually installed in the fuel tank. When you fill up at a gas station the gas travels down the filler tube and into the tank. Over time deposits and tiny particles lodge themselves in the injectors. By injecting the fuel close to the cylinder head the fuel stays atomized ( in tiny particles ) so it will burn better when ignited by the spark plug. I have experienced this when I purchased gas at some no-name gas stations. Most modern electric fuel pumps can be heard when you turn the key on. This information should be in your owner’s manual. While simple in operation, they tend to need frequent tuning and rebuilding.

 

If you don't hear the pump running and your car will not start, it could be your fuel pump. Carburetors: A carburetor takes the fuel and mixes it with air without computer intervention. While the fuel filter does a good job of filtering the fuel, it's not perfect. Fuel injectors: Most domestic cars after 1986 and earlier foreign cars came from the factory with fuel injection. Let's look at the major parts of the fuel system, Fuel tank: Basically a holding aluminum high pressure die casting led street light housing parts tank for your fuel. One day them might get Texaco, and Exxon another. Older cars have the fuel pump attached to the engine or on the frame rail between the tank and the engine. This can clog and injector and prevent it from delivering the fuel the engine needs. Also water mixed with gas will cause problems with your engine. Most gas stations, department stores and all automotive parts stores will have a good cleaner available. In the picture below you can see the injectors towards the outer part of the intake. Where do you buy your gas? Believe it, or not, it can make a difference.. Fuel injectors have tiny openings, which clog easily so filtering the fuel is the only way to prevent this. I recommend doing this every 3 months to keep your injectors performing like new. Mechanics also offer a cleaning service where they actually disconnect the fuel line and flush cleaner through the engine.

 

This is why most newer cars have done away with carburetors in favor of fuel injection. Always buy from a well know national brand service station.. This has resulted in lower emissions and better fuel economy. Fuel pumps mounted to the engine use the motion of the engine to pump the fuel Fuel filter: Clean fuel is critical to engine life and performance.. Add it to your empty tank right before you fill up and it will clean as you drive. DO IT. Last but not least are dirty injectors. Always check the ignition system first, if that's ok then the next suspect is the fuel filter. If this is operating correctly then the pump will have to be replaced. If your owners manual says put in 87 octane.The fuel system feed your engine the gasoline/diesel it needs to run. You are throwing money out the window if you are filling up on Super or Premium and you only need Regular. If the pump is in the tank or on the frame rail then it is electric and is run by your cars battery. Filters can be before or after the fuel pump, sometimes both. In the tank there is a sending unit, which tells the gas gauge how much gas is in the tank. If anyone of the parts in the system break down your engine will not run. The first thing a mechanic will check is the relay, which sends power to the pump

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