If you want to adjust them due to lifter chatter, don't do it. They all have a tendancy to chatter with a few miles on them. My '94 Cherokee has 200,000 + miles on it and it sounds like a Diesel truck. but she runs great
Yes, to access the tappets(lifters) you have to remove the cylinder head.
1990 will require an OBD1 reader
Doesn't have one.
The 1990 Jeep Cherokee electric fan relay switch is located on the firewall in the engine compartment. The fan relay switch will be on the passenger side of the firewall.
Top driver side of the bell housing.
They are hydraulic and are not adjustable.
They are not adjustable, the lifters self adjust to control valve lash.They are not adjustable, the lifters self adjust to control valve lash.
They are hydraulic and are not adjustable.
This should have a hydraulic clutch and would not be adjustable
The lifters are not adjustable. The head has to be removed to access.
i dont think they do, the lifters are right under the intake manifold
You don't. If you have valve clatter you have worn valve train parts starting with camshaft, lifters, push rods, rocker arms, rocker arm pivots and valves.
You shouldn't be able to, if you are getting too much noise it may be time for new lifters, but a 4.0 will go quite a while after it starts making lifter noise.
You have to remove the cylinder head to access the lifters.
The valves on a 1995 Jeep are not adjustable. The engine uses hydraulic lifters.
You have to remove the cylinder head(s) to access the lifters.You have to remove the cylinder head(s) to access the lifters.
The valves are not adjustable on a 1998 Jeep.