12. FUEL SYSTEM LIKE 200i TROUBLESHOOTING Engine won't start Battery voltage too low Fuel level too low Pinched or clogged fuel hose Faulty fuel pump operating system Clogged fuel filter (fuel pump) Clogged fuel injector Faulty spark plug or wrong type Cut by ECU due to angle detect sensor or incorrect function Engine stall, hard to start, rough idling Intake air leak Fuel contaminated/deteriorated Pinched or clogged fuel hose Idle speed misadjusted Backfiring or misfiring during acceleration Ignition system malfunction Poor performance (drive ability) and poor fuel economy Pinched or clogged fuel hose Faulty fuel injector 12-5