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the nissan z24 has a chain guard on either side of the chain
facing the chain the guide on the left is the chain guide and the one on the right is a guide as well it is a straight guide and when fitted should protrude slightly above the block face
it is held on the block by 2 bolts
there is also a small guide separate and above the adjuster bolted with one bolt in the head
the chain tensioner is below the lh guide and the bolts are tensioned to 53-89 inch pounds
ref to page 775 autodata timing gears and chains
Sounds like oil pressure.Try thicker oil and if the problem presists than
Check tension on chain and rotate by hand to see if everything lines up and there is no slack /
when installing oil pump ,ensure the oil ports line up/
check oil pressure with gauge
Camshaft sprocket timing alignment pins - J 36008 or equivalent
Camshaft sprocket wrench - J 39579 or equivalent
Fig. 1: View of the DOHC engine "timed position'' - 2.3L and 2.4L engines
Fig. 2: View of the SOHC engine "timed position'' - 2.3L engine
Remove the timing chain guides. There are usually three.
Raise and safely support the front of the vehicle.
Make sure all of the slack is above the tensioner. Gently pry off timing chain tensioner spring retainer, then remove the spring.
NOTE: On the 2.3L engine two styles of tensioners are used. Early production engines will have a spring post and late production ones will not. Both styles are identical in operation and are interchangeable.
Remove the timing chain tensioner shoe retainer.
Make sure all the slack in the timing chain is above the tensioner assembly; remove the chain tensioner shoe. The timing chain must be disengaged from the wear grooves in the tensioner shoe in order to remove the shoe. Slide a suitable small prybar under the timing chain while pulling shoe outward.
If difficulty is encountered while removing chain tensioner shoe, proceed as follows:
Lower the vehicle.
Hold the intake camshaft sprocket with a camshaft sprocket wrench - J 39579 or equivalent holding tool and remove the sprocket bolt and washer.
Remove the washer from the bolt and re-thread the bolt back into the camshaft by hand. The bolt provides a surface to push against.
Remove intake camshaft sprocket using a 3-jaw puller in the 3 relief holes in the sprocket.
NOTE: Do NOT try to pry the sprocket off the camshaft or damage to the sprocket or chain housing could occur.
Unfasten the tensioner assembly attaching bolts, then remove the tensioner.
CAUTION The tensioner piston is spring loaded and could fly out causing personal injury. Use care when removing.
Matchmark the timing chain outer surface for reassembly purposes.
If equipped, remove the chain housing to block stud, which is actually the timing chain tensioner shoe pivot.
Remove the timing chain.
Inspect the parts for wear, then replace if necessary. Some scoring of the timing chain shoe and guides is normal. Clean the old sealant off of the bolt with a wire brush. Clean the threaded hole in the camshaft with a round nylon bristle brush.
To install:WARNING Failure to following installation procedures can result in severe engine damage.
Install the intake camshaft sprocket onto the camshaft with the marked surface showing. Install the sprocket retaining bolt and washer. Use an adhesive compound 12345493 or equivalent on the bolt. Tighten the bolt to 52 ft. lbs. (70 Nm), while holding the sprocket with tool J-36013, J 39579 or equivalent, if removed.
Install tool J 36800 or equivalent, through hole(s) in the camshaft sprocket(s) into the holes in the timing chain housing. This positions the camshafts for correct timing.
Fig. 3: Placing the camshaft sprockets onto the marked surface of the camshaft
If the camshafts are out of position and must be rotated more than 1?8 turn in order to install the alignment dowel pins:
The crankshaft must be rotated 90°clockwise off of TDC in order to give the valves adequate clearance to open.
Once the camshafts are in position and the dowels installed, rotate the crankshaft COUNTERCLOCKWISE back to TDC.
NOTE: Do NOT rotate the crankshaft clockwise to TDC, or valve and piston damage could occur. WARNING The side of the timing chain that was marked must be facing outward when installed.
For DOHC engines only, install the timing chain over the exhaust camshaft sprocket, around the idler sprocket and around the crankshaft sprocket.
Remove the alignment dowel pin from the intake (DOHC only) camshaft. Using dowel pin remover tool J 39579 or equivalent, rotate the intake (DOHC only) camshaft sprocket counterclockwise enough to slide the timing chain over the intake (DOHC only) camshaft sprocket. Release the camshaft sprocket wrench. The length of chain between the two camshaft sprockets will tighten. If properly timed, the intake camshaft alignment dowel pin should slide in easily. If the dowel pin does not fully index, the camshafts are not timed correctly and the procedure must be repeated.
Fig. 4: Place the timing chain over the exhaust camshaft and around the idler sprocket and around the crankshaft sprocketDOHC engines
Leave the alignment dowel pins installed.
Raise and safely support the vehicle.
With slack removed from chain between intake camshaft sprocket (camshaft sprocket for SOHC engines) and crankshaft sprocket, the timing marks on the crankshaft and the cylinder block should be aligned. If marks are not aligned, move the chain one tooth forward or rearward, remove the slack and recheck the marks.
If equipped, tighten the chain housing to block stud. The stud is installed under the timing chain. Tighten to 19 ft. lbs. (26 Nm).
For vehicles through 1991, reload timing chain tensioner assembly to its "zero'' position as follows:
Assemble restraint cylinder, spring and nylon plug into plunger. Index slot in restraint cylinder with peg in plunger. While rotating the restraint cylinder clockwise, push the restraint cylinder into the plunger until it bottoms. Keep rotating the restraint cylinder clockwise but allow the spring to push it out of the plunger. The pin in the plunger will lock the restraint in the loaded position.
Install tool J-36589 or equivalent, onto plunger assembly.
Install plunger assembly into tensioner body with the long end toward the crankshaft when installed.
For 1992-98 vehicles, reload timing chain tensioner assembly to its "zero'' position as follows:
Form a keeper from a piece of heavy gauge wire. See the accompanying figure.
Apply slight force on the tensioner blade to compress the plunger.
Insert a small prybar into the reset access hole, then pry the racket pawl away from the ratchet teeth while forcing the plunger completely in the hole.
Install the keeper between the access hole and the blade.
Fig. 5: View of reloading the timing chain tensioner assembly to its "zero'' position - 1992-98 vehicles
Install the tensioner assembly to the chain housing. Recheck the plunger assembly installation. It is correctly installed when the long end is toward the crankshaft.
Install and tighten timing chain tensioner bolts. Tighten to 89 inch lbs. (10 Nm).
Install the tensioner shoe and tensioner shoe retainer. Remove the special tool J-36589, then squeeze the plunger assembly into the tensioner body to unload the plunger assembly.
Lower vehicle enough to reach and remove the alignment dowel pins.
Rotate crankshaft clockwise (normal rotation) two full rotations. Align the crankshaft keyway with the mark on the cylinder block, then reinstall the alignment dowel pins. The pins will slide in easily if the engine is timed correctly.
WARNING If the engine is not correctly timed, severe engine damage could occur.
Install the timing chain guides and, if equipped, the crankshaft oil slinger.
Install the timing chain front cover. For details, please refer to the procedure located in this section.
Connect the negative battery cable, then start the engine and check for oil leaks.
first of all take out tappet pan cover,turn engine clockwise until #1camshaft are closed(intake and exhaust lobe are opposite each other)on the crank shaft pulley there is a little cut it should line up on the front plate 0 if not the pulley damper is off just make sure #1 camshaft lobes are closed. now on the realease the two tensioner bolt on cylinder head (tensioner located above deisel pump on the cylinder head) take it out unbolt front plate pull sprocket out ,chain unbolt guide. now when putting back chain all slack to go on tensioner side .when you take the tensioner in your hand there is somthing holding back the teeth press with fingers and push the teeth inn hook it with hook now put on tensioner turn engine 1revulusion to see spining free
To replace the water pump, you will need to remove all the drive belts. Then there are 2 black covers on the front timing cover. One cover is for the chain tensioner, the other is for access to the water pump. I would recommend you replace the tensioner the same time you do the water pump. The reason is, you need to remove that tensioner so the chain has slack. When the chain has slack, you can then unbolt and pull the water pump out. It could get stuck, so there are bolts that you need that you would use to run in to pop the pump free.
If your only hearing it for a couple seconds, it's just the vehicle building up oil pressure and pumping up the timing chain tensioner. Over time the timing chain stretches and it takes a little longer for the tensioner to take out the slack.
all you need to do is just back up on the chain and it will give you the space you need to remove thw water pump you may all so need to first see is you have water in your oil if not then it not you pump can you tell what color your oil is ?
no adjustment neccesary. There is a timing chain tensioner, which you will simply push back in to its body. once you do that, there should be a small hple somewhere on the body of the tensioner. That' sthere so you can piut a paper clip into it to keep the tensioner from coming out. Once you lock that in place you can remove the tensioner and than the timing chain.Once you get it all back together, just pull back on the pin and the tensioner will come out and put tension on the chain. good luck.