Section 10 (Engine Controls - Trouble Shooting - No Codes - EEC-V (Bi-Fuel)): Symptoms: Backfires

WARNING: This page is about a different car, the 2000 Ford Pickup, 2000 Ford F550 Super Duty, 2000 Ford F450 Super Duty, 2000 Ford Contour, and 2000 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Check secondary ignition system. See TEST JB under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V (GASOLINE) article.
Check fuel delivery system. See TEST HC under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V (BI-FUEL) article.
Check engine mechanical condition. Check compression, camshaft, valve train components, etc. and repair as necessary. See appropriate article in ENGINES.
Check exhaust system. See TEST HF under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V (GASOLINE) article. If no concern is found, see TEST Z under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V article and check for intermittent faults.