Dear, first of all greetings ...... I have a small problem with Kia Frontier 2.7, this presents the following problem, it has a noise close to the pump as a kind of bell ... and the truck does not exceed the 80 km/h I will take out the injectors and send them to check and they were all ok, please someone can guide me a little if you have passed in advance thanks ...
As a general rule, it can cause the bullibrated injectors, the injected pump itself and finally damte damage in the connecting rods if you already carried to calibrate the injectors to which pressure they calibrated them that is very important and after all this check the tuning pump to 10 degrees before the top point Greetings from Nicaragua
It is known about cases that; With original pump, generic incentors were placed, but of spray less than the flow delivered by the pump. Result: a fuel setback, which reacts against each promoter of the injection pump causing that characteristic noise.- ergo, the pump mechanism resent, spoiled.