Detect Water in Fuel After Temperature Swings

Cost Savings

Checklist Tasks

• Inspect fuel tank cap seal for cracks or moisture to block condensation entry.
• Use fuel-water test paste on dipstick to detect water at the tank bottom.
• Check fuel filter bowl for cloudiness or droplets, which signal water separation.
• Drain a sample from tank’s lowest point into a clear container to spot water layers.
• Examine fuel lines for sweating or frost to catch internal condensation.
• Test for phase separation in ethanol blends by looking for distinct layers in sample.
• Replace fuel filter if water is found, as saturated filters may let water pass.
• Add fuel system water remover if water is confirmed, following label instructions.
• Inspect fuel injectors for corrosion or pitting to prevent water-related damage.
• Check for rough idling or hesitation after cold nights to catch early water signs.
• Monitor dashboard warning lights for fuel system alerts caused by contamination.
• Log temperature swings and checks in records for future reference.