Engine Fuel Systems
The fuel systems of diesel and petrol engines are treated by a single addition of XADO revitalizant gel for fuel equipment into the fuel tank. The purpose is restorative repair and wear protection of fuel equipment components without disassembly, under normal operating conditions.
Units covered by the method
24Method
What is treated
- Serviceable fuel systems of any type.
- Fuel systems that have no components with 100% wear or mechanical damage.
- Fuel systems of diesel engines — it is recommended that the treatment be carried out with fuel matching the season.
When treatment is not performed
- Fuel systems having components with 100% wear or mechanical damage are not subject to treatment.
- Additional (non-standard) filtering devices may reduce the effectiveness of revitalization.
Preparation
- Prepare the required quantity of XADO revitalizant gel for the fuel equipment of diesel and petrol engines in accordance with tables 24.1 and 24.2, depending on the engine displacement.
- To achieve maximum effectiveness of the high-pressure fuel pump revitalization, before treating the fuel system of a diesel engine it is recommended to flush the fuel system with “Complex fuel system cleaner for diesel engines Verylube JET 100*” or with the complex fuel system cleaning agent “DIESEL-LUX”.
- To achieve maximum revitalization effect, before treating the fuel system of a petrol engine it is recommended to flush the fuel system with the complex cleaner “Benzobak” or with “Complex fuel system cleaner for petrol engines Verylube JET 100*”.
- Carry out the treatment after the fuel containing the fuel system cleaner has been used up.
What the reports on these components showed
- Increased electric power consumption2 cases · median 18 %, 3 values
- Loss of compression67 cases · median 13 %, 115 values
- Elevated vibration17 cases · median 40 %, 8 values
- Increased fuel consumption30 cases · median 12 %, 20 values
- Increased clearances and backlash12 cases · median 26 %, 2 values
- Elevated operating temperature4 cases · median 6 %, 4 values
- Oil pressure drop18 cases · median 26 %, 8 values
Consolidated register of the evidence base →
Dosage rates
| Compound | Rate | How and when |
|---|---|---|
| XADO revitalizant gel for the fuel equipment of diesel engines | Engine displacement → tubes (9.0 ml) or aerosol cans: up to 5 l — 1; 5–15 l — 2; 15–30 l — 3; 30–75 l — 4; 75–100 l — 5; 100–140 l — 6; 140–175 l — 7; 175–200 l — 8; 200–225 l — 9; 225–260 l — 10; 260–300 l — 11 | Add into the fuel tank containing a minimum amount of fuel. |
| XADO revitalizant gel for the fuel equipment of petrol engines | Engine displacement → tubes (9.0 ml) or aerosol cans: up to 5 l — 1; 5–15 l — 2; 15–30 l — 3; 30–75 l — 4; 75–100 l — 5; 100–140 l — 6; 140–175 l — 7; 175–200 l — 8; 200–225 l — 9; 225–260 l — 10; 260–300 l — 11 | Rate for industrial engines. Add into the fuel tank containing a minimum amount of fuel. |
| XADO revitalizant gel for fuel equipment (double rate) | Double the recommended rate | In case of severe wear of fuel system components (over 50%). |
| Complex fuel system cleaner for diesel engines Verylube JET 100* | 250 ml per 50 l of diesel fuel | Added into the fuel tank to flush the fuel system before treatment. |
| Complex fuel system cleaning agent “DIESEL-LUX” | 1 tube of 10 ml per 20 l of diesel fuel | Added into the fuel tank to flush the fuel system before treatment. |
| Complex cleaner “Benzobak” | 1 tube of 10.0 ml per 20 l of petrol | Added into the fuel tank to flush the fuel system of a petrol engine before treatment. |
| Complex fuel system cleaner for petrol engines Verylube JET 100* | 250 ml per 50 l of petrol | Added into the fuel tank to flush the fuel system of a petrol engine before treatment. |
Treatment stages
- Prepare the required quantity of XADO revitalizant gel for fuel equipment as per tables 24.1 and 24.2 depending on the engine displacement and add it into the fuel tank containing a minimum amount of fuel. The treatment is carried out in one stage.
- Fill the tank with fuel.
- Operate the engine in the normal mode.80 engine hours of operation or 4000 km of mileage
After treatment
- Revitalization is considered complete after 80 engine hours of operation or 4000 km of mileage.
Points to watch
- A characteristic sign that revitalization has begun is an improvement in the operation of the mechanism (reduced noise level, vibration and exhaust smoke) as early as after 10 hours of engine operation.
- If after 10 hours of operation (or 500 km of mileage) no improvement in the operation of the mechanism occurs, the most likely cause is an erroneous diagnosis.
- Additional (non-standard) filtering devices may reduce the effectiveness of revitalization.
- In case of severe wear of fuel system components (over 50%), the recommended rate must be doubled.
Compounds for these units
- Revitalizant gel for diesel enginesIndustrial diesel engines — tractor, locomotive, marine and generator sets.
- Revitalizant gel for petrol enginesFour-stroke petrol engines with an oil system up to 30 l.
Reports on this unit
- SE UkrNTC “Energostal” · 2013↑ 2–13% — compression by cylinder of the petrol GAZ-52, 7.1–9.6 → 8.5–9.8 kgf/cm² (single maximum 32 %)
- SE UkrSTC “Energostal”, pilot plant · 2013↑ 35.4% — compression in the fourth cylinder, 6.5 → 8.8 kgf/cm²
- Transservice LLC · 2013↑ 2.5atm — compression across the cylinders, 28–29 → 31 atm
- PJSC Novokramatorsk Machine-Building Works · 2013↑ 0.2bar — compression in the weakest cylinder, 8.0 → 8.2 bar; the other cylinders changed within 0.5 bar
- ChAAP “Promin” · 2012↑ 3.9–8.3% — compression across the cylinders, 28.7–30.5 → 31.0–32.5 kgf/cm²
- PTP Pavlogradpogruztrans · 2012↑ 25–36% — compression of the worn cylinders, controller position 5, 22–24 → 30 kgf/cm²
- * Verylube JET 100 — diesel fuel system flush; now XADO RED CLEANER (diesel)
The XADO product range has changed since the instruction was issued. Check application details and dosage for the current products with a XADO technical specialist.
Source: Instructions for the use of XADO revitalizant gels IE-24.6-25612000-005-2008, pages 63–65.