Car Repair World

Carburetor Working Of Automotive Carburetor Common Problems The main problem with a carburetor is dirty fuel, this can cause the carburetor to malfunction. To check a carburetor air/fuel mixture a gas analyzer is needed. This will measure the carbon monoxide, hydrocarbon and oxygen content of the exhaust. During a normal smog inspection the fuel/air mixture is tested and a report is generated. When a tune up is performed the spark plug insulator can indicate a lean or rich mixture. Brownish grey is the desired color and confirms proper mixture. Black and sooty means the mixture is too rich while white to light grey confirms a lean mixture. Visit -   Spark plug inspection Basic maintenance Changing the air filter and fuel filter will keep dirt/debris from entering the internal workings of the carburetor. Air and fuel filters should be changed at regular intervals. Visit -   Fuel filter replacement   Visit -   Air filter replacment Article describes how...

How To Replace Vehicle Fuel Pump Helpful Information Some manufacturers provide an access door to service the fuel pump, be sure to research this information before beginning. To test for a fuel pump failure a  fuel system pressure test  must be performed. Sometimes the the driveshaft must be removed along with the fuel tank. The automotive engine is designed to operate on a specific fuel system pressure which is vital to  engine performance . To maintain a constant pressure, the  fuel pump  is located in the fuel tank and is comprised of an electric motor coupled to a small internal vein style pump. Fuel pumps have a pressure relief valve that allows fuel to bypass while recalculating inside the fuel tank. Direct injection fuel pumps utilize an internal pressure regulator, while having only one liquid fuel line routed to the engine as opposed to two, (pressure and return lines.) When the ignition key is turned the fuel pump relay engages while suppl...

How To Replace Vehicle Fuel Filter Helpful Information A fuel filter is used to keep fuel clean to avoid malfunctions of the fuel injectors and fuel pressure regulator. Best Practices All sealing "O" rings should be in good condition and free from nicks. Check for fuel leaks. Step by step guide on how to replace an automotive fuel filter, this guide pertains to most vehicles. Difficulty Scale: 3 of 10 Tools and Supplies Needed Fuel line release tool Replacement fuel filter Sockets Screw driver set Protective gloves and eyewear Fluid catch basin Before beginning, place the vehicle on level ground, in park with the emergency brake on. Step 1 -  Locate fuel filter of the system which is either under the car or hood. Removing Fuel Filter Mount Step 2  - Next, a fuel line release tool is needed to remove the line from the fuel filter. Fuel Line Release Tool Step 3  - Take the tool and install it on the fuel line between the filter and ...