1998 Nissan Versa Vanette Cargo 2.3 Diesel, Timing mark position at TDC (1) for mechanical fuel injector pump. (old head cracked new head is being fitted)

If the timing is off on your Nissan pickup D21, here are some steps you can take to fix it:

1. Before adjusting the timing, make sure that the engine is at top dead center (TDC). This means that the number 1 piston is at the top of its compression stroke. You can verify this by using a piston stop tool or by removing the spark plug for the number 1 cylinder and inserting a long screwdriver or similar tool to feel for the piston.
2. Once you have verified that the engine is at TDC, you can align the timing marks on the crankshaft and camshaft sprockets. The timing mark on the crankshaft sprocket should be aligned with the mark on the engine block, and the timing mark on the camshaft sprocket should be aligned with the mark on the cylinder head.
3. Next, reinstall the oil pump shaft and distributor so that they are correctly timed with the engine. The oil pump shaft should be aligned with the mark on the crankshaft, and the distributor rotor should be pointing towards the number 1 cylinder on the distributor cap.
4. Finally, reassemble the timing chain cover and any other components you removed during the timing adjustment.
5. After reassembly, start the engine and use a timing light to verify that the timing is correct. If necessary, make small adjustments to the distributor position until the timing is correct.

If you are not confident in your ability to perform these steps, it may be best to take your truck to a professional mechanic to ensure that the timing is set correctly.

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cracking an injector line relieves pressure to that injector and if it made no difference it could be from a couple of things
if no fuel dripped from the nut then there is air in that line and it should be left loose until fuel drips from the nut
if you have fuel dripping from the nut and there is no difference then that indicates a faulty injector
cracking 2 and 4 and the engine stopped indicates that 3 also is in trouble
Basically I would be taking the injectors back to a specialist diesel shop for a re-calibration and new tips rather that reconditioned tips
next --when dealing with injectors and injector pipes , if the pipes have been removed and allowed to sit around for a while , they can collect dust from the fuel still in the pipes and so before fitting they should be blown out with compressed air as that small speck of dust can jam the injector needle and prevent operation
The engine is running (albiet at low performance ) but it is running so that would indicate that any mechanical work done is ok and the problems are in the fuel deliver system--injectors and pump
if the pump has been removed the low performance could also be from pump timing so have that rechecked
if it is an inline pump ( where all the pipes come out of the top ) there is a simple procedure to check and adjust the timing accurately and if it is a rotary ( distributor) type pump with the lines from the back end , thee is a special tool and a dial gauge that is used to set the timing accurately
SO being a dealer and a reputation for reliable equipment is essential for your business I would suggest that you now bring in an accredited specialist diesel fitter to tune the fuel system
as to the stop system , a cable is as good as a solenoid as it only stops the fuel and is not part of the problem

if you know where the timing marks are supposed to be the use the old method of cam/crank timing to check and adjust to where the marks will be. Remove no 1 injector and turn the engine over until no 1 piston is coming up on injection stop when you reach TDC. mark on flywheel of harmonic balancer. If there is valve clearance ot both rockers turn the engine another 180 degrees and bring the piston to TDC again. watch the rockers and if you turn back a few degrees or turn forward a few degrees you will see ( in the forward direction) the exhaust valve closing and at the same time the inlet valve will be opening. This is known as valve rock. As you move the piston bacvk and forward over TDC you will see the valve movement. set on TDC and check the timing marks with the positions indicated. Remove and reposition the cam shaft gear to achieve the correct mark alignment or pull the cam shaft out just enough to realign the teeth to the mark. At the most you will be about 1 tooth out. The pump timing will be out 180 degrees as you are setting the valve timing on the induction stroke and you will need to turn the engine 180 degrees to compression stroke for the pump timing marks to line up. the injection mark on the flywheel is what you are looking for and when it is at the correct number of degrees as indicated by injection / lightning flash sign then the marks for the pump should be just about lined up

If the pump has been removed for servicing then I would say that the pump injector timing is off. It has to be set on injection mark and not tdc.. Have a professional injector mechanic check the timing.

Remove the three bolts retaining the upper chain guides and lift it from the cylinder head.

To allow access to the camshaft sprocket bolts, unbolt the upper timing chain cover and carefully pry the cover away from the cylinder head

Set the number one piston at TDC on the compression stroke by aligning the timing marks on the crankshaft damper.

Fig. 6: The number one cylinder is at TDC when the timing marks are aligned as shown (clikc image for zoom)

Check that the mating marks on the sprockets are aligned as shown in the illustration. If not, the crankshaft should be rotated another 360°.

Fig. 7: It may be helpful to paint marks on the chain and sprockets if the marks are not easily visible

Remove the camshaft position sensor. Mark the position of the sensor before removal to help keep the ignition timing correct.




Fig. Line up the mating marks on the lower timing chain with the marks on the sprockets

Hope this helps.

Hi, I have pasted instructions below from autozone.com. The instructions call for the use of special tools. You can improvise with alternate tools, but please make sure your timing is right before closing the cover. Please let me know if you have questions, and thanks for using FixYa.

1.9L Diesel Engine
Some special tools are required to perform this procedure properly. A flat bar, VW tool 2065A is used to secure the camshaft in position. A pin, VW tool 2064 is used to fix the pump position while the timing belt is removed. The camshaft and pump work against spring pressure and will move out of position when the timing belt is removed. It is not difficult to find substitutes but do not remove the timing belt without these tools.

WARNING Do not turn the engine or camshaft with the timing belt removed. The pistons will contact the valves and cause internal engine damage.

1. Disconnect the negative battery cable and remove the accessory drive belts, crankshaft pulley and the timing belt cover(s). Remove the camshaft cover and rubber plug at the back end of the camshaft.
2. Temporarily reinstall the crankshaft pulley bolt and turn the crankshaft to Top Dead Center (TDC) of No. 1 piston. The mark on the camshaft sprocket should be aligned with the mark on the inner timing belt cover or the edge of the cylinder head.
3. With the engine at TDC, insert the bar into the slot at the back of the camshaft. The bar rests on the cylinder head to will hold the camshaft in position.
4. Insert the pin into the injection pump drive sprocket to hold the pump in position.
5. Loosen the locknut on the tensioner pulley and turn the tensioner counterclockwise to relieve the tension on the timing belt. Slide the timing belt from the sprockets.
   
   
   

   Fig. Use the VW tool to lock the camshaft at TDC for timing belt replacement-Volkswagen 1.9L Diesel engines
   
   
   
   

   Fig. Locking the injection pump with the VW tool as shown-Volkswagen 1.9L Diesel engines
   

To install:

1. Install the new timing belt and adjust the tension so the belt can be twisted 45 degrees at the halfway point between the camshaft and pump sprockets. Tighten the tensioner nut to 33 ft. lbs. (45 Nm).
2. Remove the holding tools.
3. Turn the engine 2 full revolutions to return to TDC for the No. 1 cylinder. Recheck belt tension and timing mark alignment, readjust as required.
4. Install the belt cover and accessory drive belts.
   NOTE If the belt is too tight, there will be a growling noise that rises and falls with engine speed.

isusu engine?? have you looked for a 8mm hole in timing gear that corresponds with a hole on plate behind then lock it in with a bolt ,remove bolt after tightening belt .DONT FORGET THIS ???.....if you cant find anything do it with no timing marks easy --- piston no 1 at tdc valves closed spin pump till fuel comes out of no 1 injector feed and lock it all together,indirect diesel is 6/8 ,,,,,direct injection is 12/16,,,,and turbo is 18/22 btdc