Hello greetings to all in the forum ... I am anodaded recently we rebuild a engine to a 3 -clindos 800cc chevrolet spark The balea caps and are good those of crankshaft were scratched a little and I do not understand why if everything got new ... I would appreciate an aid because before that we thought it was the oil pump and we also changed it because it did not have a year of having put on and turned on the light also now put on a new bomb and it is also giving that问题...谢谢。