well, i was replacing the transfer pump and i think i flooded the engine trying to start it as there was probably air in the lines which i thought would clear out. eventually the car started but there started to be a ticking noise coming from the valve cover which i believe to be the lifters (it was very loud). i'm not saying replacing the pump caused the lifters to make noise, i'm just explaining what i did. the noise started from one day to the next.
just changed the oil yesterday, 20w50, it makes less noise. the car has 35000m, and though verified by the DMV i'm not positive its the actual mileage. the car has a fuel issue i've been trying to address until the tick noise started! not sure what you mean by " Is it really hyd lifters and not solid?" but based on other videos online, it sounds like the hydro lifters/tick. I also thought it could be an exhaust leak/crack, but the engine is relatively unused. i'm thinking of going for a cam and lifter upgrade, yes.
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