Idle speed problems
| Malfunction | Reason/Remedy |
| Unstable turnover | Check and adjust idle speed with engine warmed up |
| Difficulty in moving the gas pedal | Adjust |
| The fuel line between the injection pump and the fuel filter is loose | Fasten the clamps |
| Poor fuel supply | Dirty fuel filter. Fuel injection and return lines are dirty, kinked or pinched at the connection points |
| The injectors are faulty | Check Injector insulators are faulty |
| Fuel injection timing is out of adjustment | Adjust |
| The injection pump is faulty | Replace |
| Mechanical engine faults | Check, measure compression |
(Text copied from a web portal OpelBook.ru)
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