Tapping sound - lifters? Rockers?
 

i am having a annoying tapping sound.
could it be the rockers?
When the valve is in the closed position is there suppose to be any clearance between the rocker and the valve?
i also have a few lifters that bleed out really fast, What can/should i do about this? new lifters? leave it alone?
Maybe not having any pre-load on the lifters is causing the bleed out?
Also how do i pre-load the the valves that are loose? New rockers? Longer push rods?
thanks for your help

Stock long block 165K Miles

Is it a stock top end, heads, cam and rockers? If so, there should not be any play between the rockers and valve.

yes its a stock long block.

OK assuming there is play between the rockers and Valves/pushrods
What should be the next step in correcting it?
thanks for the help.

To The Top

adjustable rockers and or longer push rods...

Injectors can be noisey, what type of oil are you using? If i switch from 5w20 to 20w50 then the lifters make a racket untill the top end is supplied after about 45sec to a min from starting it.

i am using 10w40 with ZDDPLUS