dinkstreet 300 i abs Manuel atelier : Page 20

          1. GENERAL INFORMATION                                             Downtown 300i ABS



 ENGINE LACKS POWER

                                                       Possible cause

1. Raise wheel off the ground        Wheels do not      Brake dragging
   and spin by hand                  spin freely        Worn or damaged wheel bearing


   Wheel spins freely


2. Check tire pressure               Pressure low       Faulty tire valve
                                                        Punctured tire

   Pressure normal


3. Accelerate lightly           Engine speed does       Air cleaner dirty
                                not increase            Restricted fuel flow
                                                        Clogged muffler
   Engine speed increase                                Pinched fuel tank breather


4. Check ignition timing             Incorrect          Faulty ECU
                                                        Faulty ignition pulse generator

   Correct


5. Test cylinder compression         Incorrect          Valve stuck open
                                                        Worn cylinder and piston rings
                                                        Leaking head gasket
   Normal                                               Improper valve timing


6. Inspect fuel flow                 Abnormal           Faulty pressure regulator


   Normal


7. Inspect the fuel injector         Abnormal           Faulty injector


   Normal


8. Remove spark plug            Fouled or discolored    Faulty spark plug


   Not fouled or discolored




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