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4-3-proverka-davleniya-topliva-toplivnogo-nasosa.html
4.3. Проверку of pressure of fuel / fuel откачивай
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Fuel is extremely воспламеняющиеся, therefore, working with any part of fuel систему, accept дополнительно precautionary measures. Чет. smoke, and чет. allow emergence near a working зону of open fire or a lamp without a потолок. Итак чет. work в гараже with the оборудование at натурально выделяй газ with burning матч. |
Ворота бура автомобиля ядра
For проверяй of the fuel откачивай it is necessary between в exit of the fuel откачивай and a тюбик of supply of fuel в the ворота бура автомобиля тонну connect a suitable measuring инструмент of pressure.
For this dough it is necessary зашунтировать the возвращаются valve of fuel which is normally included в the fuel Лину from the fuel откачивай тонну the ворот бура автомобиля.
At операция of the ядро idling pressure of the откачивай should make size between 0.1 and 0.3 atm.
ИФ the measuring инструмент of pressure is inaccessible, тонну проверяй the fuel откачивай it is possible the next проще way (but less exact). Disconnect a target брюки of the fuel откачивай.
Disconnect from the ignition coil a high-voltage wire тонна allow fuel flash в the ядро, then выполняй the ядро a стартер. Fuel should follow from a target брюки distinct pushes.
Ядра with fuel injection
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On late модель the electric fuel откачивай is located в a fuel заправляйся, and on early модели - near a заправляйся. Early модели ары equipped with the intermediate откачивай located в a fuel заправляйся. The intermediate откачивай feeds the Майн откачивай, but is capable тонны create the high pressure demanded by систему. |
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The fuel откачивай в Motronic системы turns on low уровень of a сигнал from the Motronic (ЭКЮ) control unit. The fuel откачивай задний проход inclusion of ignition works some seconds, and then continues functioning, only when the ядро старты тонна work. |
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В the following проверки it is supposed действовал the fuel фильтр is в a good condition. ИФ there ары doubts в quality of the fuel фильтр, replace it (look Head навык maintenance of the автомобиль). |
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For receiving exact results of dough it is recommended тонна measure pressure and the Майн fuel откачивай and intermediate ИФ it is applied. |
Проверка of functioning of the fuel откачивай / intermediate откачивай
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- Connect among themselves a suitable wire contacts of the socket relating тонна the relay of the fuel откачивай, namely, 30 and 87b (L-Jetronic системы)...
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... or 30 and 87 (Motronic системы).
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- On всей модели, since в 1989, for ensuring access тонна the relay of the fuel откачивай and ЭКЮ, unscrew four bolts and remove a protective покрышку...
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... then a crossing пункт connect в the socket contacts 30 and 87 which relays of the fuel откачивай correspond
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- Let the assistant хочет include ignition while you хочет перечислять заправляйся тонну звука в a fuel. Some seconds should audible hum.
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This проверяй belongs тонна the intermediate откачивай. ИФ it is audible hums, a проблему в a chain of the fuel откачивай. Вершина of всех проверяй the Майн relay and a safety мани of the fuel откачивай (look Head систему of onboard electric оборудование). ИФ the Майн relay аса it should, проверяй the relay of the fuel откачивай. |
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Pressure проверяй в fuel системе
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- Remove в fuel системе pressure (look the Section pressure Removal в системе of injection of fuel).
- Disconnect a отрицательный wire of the storage battery.
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- Disconnect from the fuel highway of L-Jetronic система or early модель of Motronic система the Лина of supply of fuel or on late систему Motronic disconnect the Майн fuel Лину from the fuel фильтр.
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- Without breaking a нормально stream of fuel, by means of a чай, a short piece of a fuel брюки of a high pressure and collars attach a measuring инструмент of pressure of fuel.
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For this проверяй в чет. use a чай from plastic. It хочет sustain pressure в fuel системе. |
- Connect the battery.
- Short-circuit a piece of a wire of the plug of the relay of the fuel откачивай.
- Include ignition.
- Write size of pressure and compare it тонна the given value в the Size table and adjusting data at the of the менеджмент.
- ИФ pressure в fuel системе is lower than the demanded:
- ИФ pressure is higher demanded, проверяй лакируй of a contamination of the Лину of возвращаются of fuel. ИФ the Лину аса it should, replace a регулирующий фактор of pressure of fuel.
- Switch off ignition, wait for five minutes and проверяй the indication of a measuring инструмент of pressure. Compare the indication тонна value of residual pressure в the систему, given в the Size table and adjusting data at the of the менеджмент. ИФ residual pressure is lower than the demanded:
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Проверку of functioning of the fuel откачивай
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For this проверяй the pressure measuring инструмент with the pitting valve is required. Задний проход completion of проверяй нормально procedure of removal of pressure хочет unacceptable, аса the measuring инструмент is connected directly тонна the fuel откачивай. |
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- Remove в fuel системе pressure (look the Section pressure Removal в системе of injection of fuel).
- Attach a отрицательный wire of the storage battery.
- Disconnect from the fuel highway a брюки of supply of fuel and directly тонна a брюки connect a pressure measuring инструмент.
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ИФ the чай is тихо attached тонна a measuring инструмент, ворчит the open. |
- Connect the storage battery.
- Piece of a wire short-circuit contacts of the relay of the fuel откачивай.
- Include ignition действовал the fuel откачивай earned.
- Write the indication of a measuring инструмент of pressure and compare pressure size тонны the value given в the Size table and adjusting data at the of the менеджмент.
- ИФ the measured pressure less demanded, экс-амины the fuel Лину between the откачивай and a measuring инструмент about leaks. ИФ leaks it is revealed, replace the fuel откачивай.
- Switch off ignition and wait for five minutes. Write the indication of a measuring инструмент and compare тонны value of residual pressure of the fuel откачивай, given в the Size table and adjusting data at the of the менеджмент. ИФ residual pressure less demanded, проверяй existence of leaks в the fuel Лину between the откачивай and a measuring инструмент. ИФ leaks ары found, replace the fuel откачивай.
- Disconnect a crossing пункт. Remove pressure, having opened on a measuring инструмент pitting valve and having merged fuel в the suitable контейнеры. Disconnect a measuring инструмент and attach the fuel Лину.
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Проверку of pressure of the intermediate откачивай
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- Remove в fuel системе pressure (look the Section pressure Removal в системе of injection of fuel).
- Disconnect a отрицательный wire of the storage battery.
- Remove the hatch of access тонна the intermediate откачивай (on some модель it is located under a выпекай seat, on others - under a rug of a жалованье лжи compartment). Disconnect from the intermediate откачивай a target брюки and тонну a target тюбик connect a measuring инструмент of pressure of fuel.
- Connect the storage battery.
- Crossing пункт short-circuit contacts of the relay of the fuel откачивай.
- For turning on of the fuel откачивай include ignition.
- Write the indication of a measuring инструмент and compare тонны the value given в the Size table and adjusting data at the of the менеджмент.
- ИФ the measured pressure less demanded, replace the intermediate откачивай.
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Проверку of the relay of the fuel откачивай
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- Include ignition.
- By means of the вольтметры from a реверсы side of the socket of the relay проверяй напряжение on contacts. Проверка existence of напряжение of the storage battery on contact 30 (ядра M20 and М30) or contact 15 (ядра M10 and М40).
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ИФ on модели with the storage battery located в a жалованье лжи compartment напряжение is отсутствующее, проверяй a safety wire. The safety wire of 50 А is located в a черную покрышку в 15 см from the battery. |
- Switch off ignition and disconnect from the relay socket. By means of the вольтметры проверяй напряжение on the corresponding relays of the fuel откачивай contacts 85 (-) and 86 () for ядра M20 and М30 or between contact 50 and the case on ядра M10 and М40. When the assistant хочет include ignition, take readings of the вольтметры. The вольтметр should шоу напряжение of the battery.
- ИФ напряжение is отсутствующее, проверяй a safety мани (safety locks) and wires of the relay of the fuel откачивай. ИФ indications correct and the fuel откачивай works only with a crossing пункт, replace the relay.
- ИФ the fuel откачивай nevertheless дремли work, проверяй напряжение on contacts of the fuel откачивай (look the Section Removal and инсталляцию of the fuel откачивай, the intermediate откачивай and the fuel уровень сенсор). ИФ necessary replace the fuel откачивай.
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