Car Repair World

Misfire - Engine Miss My Car Engine Misfires while starting or running Vehicle Runs Rough Helpful Information An engine tune up is necessary at manufacturers recommended intervals to maintain proper engine run-ability. A misfiring engine will cause, low gas mileage, low power output, increased emissions and possible internal engine damage if left untreated. Typically an engine misfire under load, will be a problem with the ignition system, while low engine speed problems will be a vacuum, fuel management or compression issue. When retrieving trouble codes, only consider related codes to a specific misfire problem, like an ignition coil failure code. If a trouble code is present and doesn't pertain to the immediate problem like an EVAP code, ignore it until a later time, when the engine is  running properly these codes could cycle out. Step by step guide on how to troubleshoot and repair an automotive engine cylinder misfire, this information pertains to most non elect...

Engine Misfires Car Runs Rough For Part 1 Click The Link Step 12  - If the compression test is okay along with a wet spark plug, the  ignition coil needs to be tested. Test Ignition Coil Output Step 13  - Spark plug wires are designed to transfer an electrical charge from the coil to the spark plug, when these cables wear, they can short circuit causing a misfire. Shorted Spark Plug Wires Step 14  - A fuel injector regulates the amount of fuel which is consumed by the engine, if the  injector operation  has failed the cylinder will misfire. Test Fuel Injector Operation Step 15  - A random misfire is can be associated with broken or dilapidated vacuum hoses or tubes on and around the engine causing a  vacuum leak , these hoses are typically connected to the engine intake manifold and supply engine vacuum to various accessories such as the brake system. If an intake gasket fails or a vacuum line that is close to an int...