Rocker arm needs to be replaced

Hi Edward , sounds not right , lol . You have to remove the whole Rocker shaft with it rockers before you can remove or replace the rocker arm rod .

In engines with rocker arm valve systems, the procedure I'm familiar with is to remove a rocker arm cover, and (one at a time!) while the engine is running, slowly back off the rocker arm retainer nut or bolt just until you hear the lifter tapping, then tighten it a quarter turn. If you can identify a lifter that is already tapping, tighten its rocker arm slowly until it stops tapping, then adjust it. Do not over-tighten! This can damage the engine.

Listen carefully to how the engine sounds; if it starts to stumble when you tighten a loose rocker arm, you've gone too far. If you cannot get the engine to run well without tapping, you may have too much wear in the valve train and may be due for a head overhaul, or you don't have adequate oil pressure in the lifters in question.
Repeat until all rocker arms are done. Replace the rocker arm cover using a new gasket, then (in a V-engine), repeat the procedure on the other side of the engine.

Wearing safety goggles, or better yet, a transparent face shield, is strongly recommended. Sometimes oil will squirt out a considerable distance from the lifter side of the rocker arm during adjustment, and the direction is not readily predictable.

You did not list the year make and model but, What did you do to them? Did you set the lash correctly? Does the motor sound like it has compression?

Your going to need a air pressure regulator or better yet if the ECM found fault price it and replace it

1. Start the engine, and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
2. Remove the cylinder head cover.
3. Set the No. 1 piston at top dead center (TDC).
4. Move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A should move independently of the secondary rocker arm B.
1. If the intake secondary rocker arm A moves freely, go to step 5.
2. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, then check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
3. Repeat step 4 on the remaining intake secondary rocker arms with each piston at TDC. When all the secondary rocker arms pass the test, go to step 6.
4. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm2, 57 psi).
5. Inspect the valve clearance.
6. Install a 10 x 1.0 mm adapter to the inspection hole, then connect the air pressure regulator
5. With the specified air pressure applied, move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A and secondary rocker arm B should move together. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, and check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.

1.5 and 1.8 engines:
* Install the rocker arm and shaft assemblies. Tighten the rocker arm shaft retainer bolts to 23 ft. lbs. (32 Nm).
* Check valve adjustment and install the valve cover. Tighten the valve cover bolts to 16 inch lbs. (1.8 Nm) for the 1.5L engine or to 29 inch lbs. (3.3 Nm) for the 1.8L engine.


2.0 engine
* Lubricate the rocker shaft with clean engine oil and install the rockers and springs in their proper places.
* Install the rocker shaft assemblies on the engine. Tighten the bolts gradually and evenly to 21-25 ft. lbs. (29-35 Nm).


2.4 engine



Fig. Rocker arm shafts and components-2.4L engine



* Fit the rocker shaft springs from above and position them so that they are at right angles to the plug side. Install the rocker springs before installing the exhaust side rocker shaft and rocker arm assembly.

* Install the exhaust side rocker shaft assembly in the engine. Tighten the rocker shaft mounting bolts gradually and evenly to 23 ft. lbs. (32 Nm).
* Remove the lash adjuster retaining tools.
* Install the rocker cover and tighten the mounting bolts to 30 inch lbs. (3 Nm).
* Reinstall the spark plug wires to the spark plugs.


Hope helps.

Sounds like a rocker arm is out of adjustment or one of the rocker arms are worn more than the rest. If you find one loose rocker arm and the rest are tight then the entire rocker assembly will need to be removed and the one rocker arm will have to be replaced. Thats on a V6 and V8 models . Now on the four cylinder you have to remove the timing belt cover,unbolt the timing belt and hold tension on it to keep the belt from jumping off the crankshaft gear. Remove the rocker arm cover and you will have to remove the cam to get to the roller rocker arms. There is alot of work to do to get this job done. If you do not have all the tools to do this with, then it would be better to take the truck to a mechanics shop for repairs. Hope this will help you.

First, your engine has rocker arms, if you have a 4 cylinder you have 8 rocker arms, and if it is a 6 cylinder you have 12 rocker arms. Now if it is indeed a rocker arm making the noise, the cause is most likely a bad lifter or a worn cam shaft.

It is not you rocker arms. It is your control arms in the back end. They are more commonly refered to as trailing arms. What happens is the bushings go bad. Nissan accualtly put out a TSB about this issue. Your rear suspension has 4 control arms. Two top, two lower. It is common for the Lower's to go out at around 100,000 to 125,000 they normally run about 115.00 a piece. I would just replace the lower ones. The uppers don't normally go out. The tall tell to this problem is about anything past 25 Mph you suddenly let off the gas it sways. Then you go to excell and it does the same thing. Almost feals like the rear dif is trying to come out from under you. What happens is the bushings go bad so when it has any slack the rear end goes out of allignment. Very easy fix costly if you don't do it yourself.

it could be a rocher arm, or it could be the timing chain tensioner, mostly it the rocker on those they make it sound like the motor is going to blow, to have the rocker checked and adjusted i beleive is about $180.00. good luck.

are the pushrods hollow or solid