help lifter sound
Thread Starter
Intermediate
Joined: Aug 2008
Posts: 32
Likes: 0
From: Tronto ON
help lifter sound
i need help my 1981 vett is making a tapping loud tapping sound and it is back firing now and it hass no power ,i tryed to tightn the lifters but one of my pushroads where bent ,how do i ajust them.
this is the first time me doing this help pls.
this is the first time me doing this help pls.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
You need to do a lot more work than just adjusting the rockers. You have a bent push rod and you need to find out why.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
? ran the heck out of it (hi rpm) .... pumped up lifters & floated valves ... bent a pushrod or two ... maybe even had a valve or two hit piston(s)?????
Better look to see if any of the 16 lifters has puked its thin wire retainer out the top of each lifter.
Better look to see if any of the 16 lifters has puked its thin wire retainer out the top of each lifter.
Thread Starter
Intermediate
Joined: Aug 2008
Posts: 32
Likes: 0
From: Tronto ON
thanks for the input
i think out of a random act of stupidity i tightened it to tight when i was trying to get the tapping nose out of the car .
replaced all the push rods and it runs great now thanks a lot for your input guys .
replaced all the push rods and it runs great now thanks a lot for your input guys .
Instructor
Joined: Aug 2006
Posts: 159
Likes: 5
From: New jersey
sounds like the cam is wiped, or lifther, either way it bent your pushrod. if cam wore on one of the lopes, it frozed the lifther then bent rod, if lifther frozed first, it wore the cam then bent rod....either way, the rod wont bent on its own. one way to check cam. take off one valve cover then run motor, look to see if all the rockers are moveing the same height, if one isnt going as high, then that lope is worn on the cam. be sure to check both sides. i know this cuess i just went tro this, have to change cam lifthers rod's. good luck
Thread Starter
Intermediate
Joined: Aug 2008
Posts: 32
Likes: 0
From: Tronto ON
replaced pushrods
when i replaced the push rods ,i watched all the lifter's very closely to see if the where all working and the oil was pumping out the top of them .
i was covered in oil after but all seamed fine and where moving about the same height and oil was spraying out of the top of them .
but it runs well now .
i was covered in oil after but all seamed fine and where moving about the same height and oil was spraying out of the top of them .
but it runs well now .
