Lifter adjustment?

puppyduks · #1 (**permalink**) 05-25-2009, 04:34 AM

Can the lifters be successfully adjusted on the 4.0l OHV engine? My truck is a 2000 but had a rebuilt engine put in in 2005. The lifters are starting to tap at 87,000 miles.

kernel-panic · #2 (**permalink**) 05-25-2009, 02:12 PM

The 4.0 OHV engines had non-adjustable lifters. The tapping is from wear on the pushrods / rocker arms. You can buy the replacement sockets for the rocker arms and new pushrods and install them.

Lead Head · #3 (**permalink**) 06-02-2009, 11:18 PM

They are hydraulic lifters, and self adjust, but it is fairly common for 2.9/4.0 OHV engines to have premature lifter failure. If its a knock or a rapping then its the lifters collapsing, but if its "clicking/light tapping" like noise, then its probably valve train wear like it was said.