To use it on petrol engines you will have to use either the t-piece after the fuel filter or find a cap in the fuel that one of the adapters will fit. 25PCS Diesel Injector Seat Cleaning Brush Tool Engine Injectors Cleaner Kit UK.
eBay
VDO Water Temperature Gauge/Oil Pressure Gauge/Voltmeter/Oil Temperature Gauge/Fuel Gauge 52mm 12V 24V Optional
Aliexpress UK
Suitable for Petrol fuel types. Comprehensive fuel pump pressure test kit of adaptors and fittings for modern Schrader test port fuel injection systems.
eBay
Adjustable FPR AN6 Fitting EFI Fuel Pressure Regulator For 7MGTE MKIII with Hose Line Fittings Oil 100psi Gauge Universal
Aliexpress UK
Suitable for Petrol and Diesel fuel types. Comprehensive fuel pump pressure test kit of adaptors and fittings for modern Schrader test port fuel injection systems.
eBay
Digital Pressure Gauge 400bar 1000bar Air Liquid Fuel Oil Water Digital Pressure Manometer M20*1.5 Pressure Gauge
Aliexpress UK
Suitable for Petrol and Diesel fuel types. Comprehensive fuel pump pressure test kit of adaptors and fittings for modern Schrader test port fuel injection systems.
eBay
Adjustable Fuel Pressure Regulator Car Accessories Vehicle Refitting fuel Supercharger Universal with Gauge Kit Blue/Red/Black
Aliexpress UK
TU-114 Fuel Pressure Gauge Auto Diagnostics Tools For Fuel Injection Pump Tester. 1x Pressure Tester Set. Kit includes copper adapter. Comprehensive kit of adaptors and fittings for modern Schrader test port fuel injection systems.
eBay
1/2 Inch Fuel Line Fuel Pressure T-fitting Adapter For Fuel Pressure Gauge Sensor Car Accessorie T-fitting Adapter Connector
Aliexpress UK
Suitable for Petrol and Diesel fuel types. Comprehensive fuel pump pressure test kit of adaptors and fittings for modern Schrader test port fuel injection systems.
eBay
Fuel Pressure Regulator Adjustable Vehicle Refitting Fuel Supercharger Universal Fuel Pressure Regulator With Gauge Kit
Aliexpress UK
Suitable for Petrol and Diesel fuel types. Comprehensive fuel pump pressure test kit of adaptors and fittings for modern Schrader test port fuel injection systems. supplied in blow moulded storage case.
eBay
10IN1 Boost Gauge Water Temp Oil Temperature Oil Pressure Tacho Speed Air/Fuel Ratio Exhaust Gas Temp Fuel Pressure with Sensor
Aliexpress UK
Suitable for Petrol and Diesel fuel types. Comprehensive fuel pump pressure test kit of adaptors and fittings for modern Schrader test port fuel injection systems.
eBay
1/2" 3/8" Fuel Line Pressure T‑Fitting Adapter For Fuel Pressure Gauge Sensor Barbed Push Lock T-Fitting Adapter
Aliexpress UK