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See ENGINES Faulty High Speed Operation Low fuel pump volume Replace fuel pump Leaking valves or worn Replace valves and/or springs, See ENGINES Incorrect valve timing Reset valve timing,See ENGINES Intake manifold restricted Remove restriction Worn distributor shaft Replace distributor Faulty Acceleration Improper fuel pump stroke Remove pump and reset pump stroke Incorrect ignition timing Reset ignition timing, See TUNE-UP Leaking valves Replace valves, See ENGINES Worn fuel pump diaphragm or piston Replace diaphragm or piston Intake Backfire Improper ignition timing Reset ignition timing, See TUNE-UP Faulty accelerator pump discharge Replace accelerator pump Improper choke operation Check choke and adjust as required Defective EGR valve Replace EGR valve Fuel mixture too lean Reset air/fuel mixture, See TUNE-UP Choke valve initial clearance too large Reset choke valve initial clearance Exhaust Backfire Vacuum leak Inspect and repair
2008 Honda Civic EX GENERAL INFORMATION Trouble Shooting - Basic Procedures
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