LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Fuel System Preliminary Checks >> Engine Cranks But Will Not Start
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Cranks But Will Not Start

  1. Check fuel tank contents and fuel gauge accuracy. Check for dirt, water or other contamination in fuel.
  2. Check ignition system for strong secondary current at spark plugs. If no spark exists or is weak, repair ignition system problem first.
  3. Check fuel lines and fittings for leaks. If no leaks are found, check fuel delivery system for proper pressure and volumes. Reset inertia switch if necessary.
  4. Check for a defective fuel injector or coolant temperature sensor. Ensure TPS is not sticking.