detergent Troubleshooting

Detergent not dispensing on the Nilfisk C 135.7

Source: iFixit — repair guides & answers Confidence: 60% Verified Aug 9, 2026

The pressure washer does not dispense detergent, often due to a blocked siphon.

How to fix Detergent not dispensing

Check the siphon

Clean the detergent siphon tube.

Source: iFixit — repair guides & answers Confidence: 60% Verified Aug 9, 2026

Difficulty: ★ Est. 5 min

Refill the detergent

Refill the detergent reservoir.

Source: iFixit — repair guides & answers Confidence: 60% Verified Aug 9, 2026

Difficulty: ★ Est. 2 min

Parts needed: Nilfisk C135.7 Detergent

Replacement parts for the Nilfisk C 135.7

Nilfisk C135.7 Nozzle Nilfisk C 135.7 Pump Oil Nilfisk C 135.7 Pump Seal Kit Nilfisk C 135.7 Water Inlet Filter Nilfisk C135.7 Spray Gun Nilfisk C135.7 High-Pressure Hose Nilfisk C135.7 O-Ring Set Nilfisk C135.7 Detergent

← All Nilfisk C 135.7 error codes

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