Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grandee Cheroki
+ Jeep Grand Cherokee brand Cars
+ Settings and routine maintenance
+ Ryadny six-cylinder engine
+ V8 Engine
+ Procedures of the general and major maintenance of the engine
+ Systems of cooling, heating and air conditioning
- Power supply system and production of the fulfilled gases
   General information
   Procedure of dumping of pressure of fuel
   Check of pressure of fuel and functioning of the fuel pump
   Removal and installation of a fuel tank
   Cleaning and repair of a fuel tank - the general information
   Repair and replacement of fuel lines
   Removal and installation of the fuel pump
   Check of serviceability and replacement of the block of the fuel level sensor
   Removal and installation of assembly of an air purifier
   Replacement of a cable of gas
   System of injection of fuel - the general information
   Check of serviceability of system of injection of fuel
   Serviceability check, removal and installation of the case of a throttle
   Check of serviceability and replacement of a regulator of pressure of fuel
   Serviceability check, removal and installation of injectors of fuel
   Check of functioning and replacement of components of system of stabilization of turns of idling (IAC)
   Service of system of production of the fulfilled gases - the general information
+ System of electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of gear shifting
+ Automatic transmission
+ Transfer case
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of onboard electric equipment
+ Governing bodies and operation receptions
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Check of serviceability and replacement of a regulator of pressure of fuel

See the prevention at the beginning of the Section Procedure of dumping of pressure of fuel.


Models of 1995 вып. are equipped built in in the block of the fuel pump/fuel level sensor with a pressure regulator (see an illustration) therefore on these models there is a possibility of check of only adjusted pressure of fuel.

Check

 PERFORMANCE ORDER

  1. Dump pressure in a power supply system (The section Procedure of dumping of pressure of fuel).
  2. Disconnect a negative wire from the battery.
  3. Establish a manometer (The section Check of pressure of fuel and functioning of the fuel pump).
  4. Start the engine and check it on leaks around shtutserny connections of a manometer.
  5. Walk on a vacuum hose from a regulator of pressure of fuel to the inlet pipeline. Disconnect a hose from the pipeline and connect to its union the vacuum gage. Start the engine and make sure available depression. Remove the vacuum gage and connect into place a hose.
  6. Disconnect a vacuum hose from a regulator of pressure of fuel and connect instead of it the manual vacuum pump. Consider manometer indications in the presence of depression on a regulator and in the absence of that (see illustrations "Connect the vacuum pump..." and "... and then having created it..."). With increase in depth of depression pressure of fuel should fall. Compare results of measurements to requirements of Specifications.
  7. Connect to a regulator a vacuum hose and measure pressure of fuel at single turns of the engine, again having compared results to requirements of Specifications. Disconnect a vacuum hose and track change by pressure - it should jump up to the maximum admissible value immediately after a detachment hoses. If changes in indications of a manometer did not occur, replace a regulator.
  8. If pressure of fuel is too low, press the line of return of fuel (installation of a special flexible insert as the line can appear metal probably is required) and track change of indications of a manometer. If pressure did not rise, the fuel pump is faulty or passableness of the line of supply of fuel is broken. In case of sharp pressure jump replace a regulator.
  9. If the measured pressure of fuel is excessively high, stop the engine and dump pressure in a power supply system (The section Procedure of dumping of pressure of fuel). Disconnect the line of return of fuel and blow it, checking on passableness. If passableness of the line is not broken, replace a pressure regulator.

Replacement

 PERFORMANCE ORDER

  1. Dump pressure in a power supply system (The section Procedure of dumping of pressure of fuel).
  2. Disconnect a negative wire from the battery.
  3. Disconnect vacuum and fuel hoses from a pressure regulator, then give bolts of its fastening.
  1. Give fixing bolts (shooters) (the engine in volume of 5.2 l is shown) and...

... remove a pressure regulator from the fuel highway.

  1. Remove a regulator.
  2. Installation make upside-down. Do not forget to replace a sealing ring. Before installation grease a new ring with pure impellent oil.
  3. After completion of installation of a regulator check system on existence of leakages of fuel.