rocky w

1999 Lexus GS 400 166k miles. I have a Ticking noise that is coming from the drivers side valve cover. Sounds like a lifter but when I take the valve cover off the noise isnt as loud. Ive owned for a year and the noise has always been there.hasn't got any louder from day one Im wanting to sell it now but I want to fix the problem first. any clues to check

jcat_350

try adding some lucasoil fuel system cleaner to your tank when you fill up next, it could be just a noisy injector. Had a few of those myself (01 gs3 with 129k) and it quieted the motor right down.

habeeb89

iTrader: (3)

I too would try some good fuel injector cleaner, such as the Lucas and see if that works.

RI-Lex

iTrader: (4)

the injectors on our cars, are known to be on the loud side.

rocky w

Its not the injectors. I unplug each one as it was running, noise is still there. If it was one of them it would of stop.

habeeb89

iTrader: (3)

Maybe valves chattering, have them re-adjusted, that is what I would think if it's not the injectors.

rocky w

I just checked them. now I need to find out where they need to be. they average .008 and a couple .014. does any one know what the valve lash should be. Thanks