mga sir/ma'am,

I have an issue with my 89 maxima, tumukod kasi one time, nung pinagawa ko, dukot yata yung ginawa ng mekaniko, pinalitan yung bearing sa may cam gears (or one of the gears sa bandang ibaba) yata yun, looks like 4 plates with small holes yung bearing eh..

tumakbo naman afterwards after gawin, kaso everytime I accelerate/decelerate lalo na kapag nsa 1st gear going to 2nd gear and 3rd gear, tapos ang rpm eh pumapalo na sa 3k-4k, you'll hear the knocking sound...

pinatingnan ko sa gumawa dati, di daw kailangan ng overhaul, sa racker/rocker arm daw galing yun, sa iba naman, overhaul na daw and immediately quoted 31k++, labor, parts and machine shop

pero kapag 4th gear and 5th gear wala yung knocking sound

so medyo nalilito tuloy ako...

ano kaya problema???

thanks