Malfunction: Engine power too low (Opel Kadett D)

Conditions required to perform the test: normal readings on the tachometer, tire sizes correspond to the serial model, wheels rotate freely (brakes, wheel bearings), the clutch and clutch play must be adjusted, the running-in period must be completed (approximately 5000 km). To determine the maximum speed, it is recommended to drive exactly 1000 m in both directions on a level surface and determine the maximum speed using a stopwatch.

Malfunction	Reason/Remedy
Full throttle position not reached on fuel pump	Check the gas supply process, the gas pedal path is too short, the pelvic cable adjustment is not in order
The engine does not reach maximum speed	Check and adjust the maximum speed
The air filter is clogged	Clean or replace
The fuel filter is clogged	Replace
Air in the fuel system	Let the air out
The fuel lines are faulty	Check the fuel lines (intake, return flow, injection, tank ventilation). Fuel lines are dirty. Clogged with ice or wax (only in winter). The injection pipes are pinched at the joints (minimum 0 2 mm) or kinked. Injection lines not connected in order of cylinder firing. Fuel line clogged. Tank filter clogged
Defective injectors	Fuel dripping from injectors, injector needles sagging or broken, incorrect fuel injection pressure, poor quality fuel, defective seals under injectors, leaky seals
The moment of start of fuel supply is shifted	Check the fuel injection start time setting
The fuel pump is faulty	To test install a new fuel pump
There is a mechanical fault in the engine	Check compression, leaky seals and cylinder heads, reduction of the conditional passage of exhaust pipes
Fuel hoses are mixed up	The fuel suction line is connected to the drain pipe of the tank. Connect the pipes correctly. With 8/83, both the suction hose connector and the fuel suction hose are painted blue