My Jeep has a ticking/knocking sound that is.

If you are only replacing the lifters (note: there are 8 of them on the 4 cylinder) Figure 200 in parts and aprox 4 hours labor

It will have 12 lifters (2 per cylinder) Figure another 80 for parts and the same for labor.

C'MON J AND N!

LET'S SORTA TRY A EZier OPTION----I'M SURE YOU WILL AGREE WITH!

BEFORE WE DO MAJOR SURGERY!

.....................AND IF YOU'RE UP TO UNDERSTANDING MY RURAL ROUTE COUNTRY BOY LINGO

MAYBE GIVE THIS SOME THOUGHT....... SEE MY LINK

UNDERSTANDING WHAT IS GOING ON WITH HOW THE TAPPETS WORK, WILL GIVE YOU A BETTER OUTLOOK ON WHAT TO DO--I SORTA TRY TO EXPLAIN IT REALLY SIMPLIFIED IN MY LINKS

https://www.2carpros.com/questions/1983-ford-falcon-hey-ther-got-noisy-lifters-dne-oil-change-put-mbl8-they-still

USUALLY ONE OIL CHANGE CYCLE MAKES A DIFFERENCE--DO IT 2 OIL CHANGES IF YOU WISH---IF THAT DON'T DO IT--SURGERY MAY BE AN OPTION (I HAVE ONE MORE MINOR SURGERY TO DISCUSS, BEFORE YOU CHANGE THE TAPPETS) (HYDRAULIC LIFTERS)

I ALSO USE LUCAS OIL STABILIZER. I USE IT EVERY OIL CHANGE....SURE IT'S ABOUT $10 OR SO FOR A QUART (NOT THE SYNTHETIC)

I DRIVE MY CJ EVERY DAY. I REBUILT THE OLE 258 ENGINE IN 1995, IT'S STILL GOING STRONG, HOLDS A STEADY 21Hg OF VACUUM AT IDLE. NOW WITH OVER 200K, I FORESEE IT LASTING MUCH LONGER!

MY TACTIC WAS 30W HD --1ST 500 MILE BREAK IN OIL CHANGE ---30 HD TILL THE 1ST REAL 3000 MILE OIL CHANGE (STILL BREAKING IN)----20/50 HAVOLINE TILL THE 4TH OIL CHANGE (I FIGURED THE RINGS WERE AS SEATED AS THEY EVER WOULD BE BY THEN)THEN 20/50 HAVOLINE AND LUCUS OIL STABILIZER TILL NOW ..................I THINK THE ADDITIONAL $5 OR SO REPLACING A REGULAR QT W/ LUCUS HAS KEPT ME FROM DOING SURGERY!

MINE'S "ONLY" 35 YEARS OLD---I'M SURE YOU'RE USING A LIGHTER OIL---BUT THE OIL STABILIZER WILL WORK FOR YOU TOO.

NOW HERE'S A "MINOR SURGERY" OPTION---PAY ATTENTION TO THE "CHANGING" ONLY THE 1 OR 2 "PROBLEM CHILD" PUSH RODS

https://www.2carpros.com/questions/1978-gmc-c2500-ticking-coming-rebuilt-engine

IN THE END WHAT THIS ADDS UP TO IS, YOU HAVE CHANGED THE POSITION OF THE INNER PLUNGER INSIDE THE TAPPET WITH THE "SLIGHTLY LONGER" PUSHROD---THE "RE-POSITIONING" MAY MAKE THE TAPPET(S) SEAL BETTER--AND NO MORE TAPPY TAPPY!

SO TO RE-HASH

MMO MAY DO IT FOR JUST A FEW BUCKS AT OIL CHANGE TIME!

FINDING THE "PROBLEM CHILD AND SWAPPING IT'S PUSH ROD FOR ONE MAYBE .010" LONGER (JUST BY REMOVING THE VALVE COVERS AND TAKING A ROCKER ARM LOOSE)

I WOULD HOPE YOUR V-6 WOULD BE EZ TO ACCESS THEM

ANY QUESTIONS--FEEL FREE IF MY LINGO IS HARD TO UNDERSTAND

THE MEDIC