Question about 1985 Nissan Stanza

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Why does it sound like a lifter knocking? i know that one of the shaft mounted rocker arms is loose, could that be the problem and what can i do to fix it?

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It sounds like a lifter ,because that is what it is . that is why the rocker is loose because the hydraulic lifter is not pumping up all you can do is replace the lifter and keep your oil clean with regular oil changers and filters

Posted on Sep 09, 2009

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I have 2004 mercury verado that is making ticking sound - I thought it was oil, but some one told me that it could be the lower unit... Any suggestion ? Thanks!


knocking is normally the lower unit
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if there is amiss the it could be a spark jumping

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Ok so ik I'm posting allot haha but does anyone know where or how to adjust lifters just found out mine r just now needed adjustment in near mount Vernon WA or a price at least haha


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.

Apr 03, 2015 | Cars & Trucks

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I have a 98 Dodge Dakota sport 2.5 liter plenty of oil pressure have a knocking sound lifters and rocker arms Plus time and change ok what could be the problem


Sounds like the crank shaft bearings on the piston rod shafts wore out just a guess. Good luck have a mech look at it as I don't want to tell you wrong as I am not there.

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2002 mitsubitshi eclipse gt lifters knocking


IF you are sure that it is the lifters then pull them and have a leak down test done on them. If they fail have them replaced . Check rocker arm bushes and shaft for wear as well as the noise may be there and not the lifters.

Mar 29, 2014 | Cars & Trucks

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Motor knock sounds like rocker arms or lifters?


If your engine is knocking the sound with be at the bottom of your oil pan but if you have lifter or rocker arm problems the sound will be at the top of your engine. One other thing you said your car has 315k it might be time to change your oil pump.

Mar 25, 2013 | Chevrolet Silverado 2500HD Cars & Trucks

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1996 4.3 w engine knock. Don't hear it cold unless rev engine. Can hear it best on pass side engine, on intake more than rocker cover. Gets much worse as engine warms up. Does this engine have a balance...


It sounds like you have a lifter that is sticking or the nut that holds the rocker arm has come loose. In eighter case you need to remove the valve cover to see if its the nut tightten to 20 ft lbs If its the lifter you can try to free it and make it move but to replace it you need to pull the head off Be sure this not an exhust that you are hearing they can sometimes sound similar especialy if the exhust manifold has a small crack in it. That can be repaired with out removeing the manifold

Dec 18, 2010 | 1996 GMC Jimmy

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I replaced the lifters in my 2000 galant 2.4 L and i need to know what to torque the rocker arm shafts to.


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

fa2bc50.jpg

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.

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1 Answer

Lifters are knocking and there is a missing in


lifters tick and noise is upper end of engine if lifters are making noise could be from a bad valve,bad lifter ,push rod ,oil pressure,rocker arm - need to take do compression test find out if valve problem and which cylinder is problem also take off valve cover and check for proper oiling of valve head and look to see if and are damaged or loose-------a knocking sound usually comes from lower end of engine,rod knock etc.and thats usually rebuild of engine

Nov 22, 2009 | 1994 Isuzu Trooper

2 Answers

How to tighten rocker arms


If it's knocking,It's not a rocker arm (They tick) Knock are usually rod or rod bearings or a bad balance shaft and you can't adjust those.

May 11, 2009 | Nissan Maxima Cars & Trucks

2 Answers

Roker Arms


sounds like your lifter are damaged if your rocker are loose you may need to replace cam and lifters

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