jim don't seem to be online..
you need to take out the #1 plug,,,hold your finger on the plug hole...have your help to bump the starter till you feel air[compression]start to come out of the hole....then hand turn the engine until the mark on the harmonic balancer is on [o]..now you have the #1 piston up on the compression stroke...now,install the distributer to where the rotor is pointing to the #1 plug wire terminal...now it is in time.....when doing this,sense the gear will turn with the oil pump..just put 2 bolts in the pump so you can remove it easy till you get everything aligned up....this is a little slow..but you will get it
When checking ignition timing on air conditioner equipped trucks, make sure that the air conditioner is OFF when proceeding with the check. Refer to Idle Speed And Mixture Adjustments.
CAUTION Automatic transmission equipped models should be shifted into D for idle speed checks. When in Drive, the parking brake must be fully applied with both front and rear wheels chocked. When racing the engine on automatic transmission equipped models, make sure that the shift lever is in the N or P position.
FIG : Fig. 4: 1981-88 Z20, Z22, Z24 and Z24i Engines Engine firing order: 1-3-4-2 Distributor rotation: counterclockwise
See Figures 1 to 14REMOVAL
To remove the distributor, proceed in the following order:
FIG : Fig. 6: Exploded view of the distributor-1986-88 Z24i engines
See Figures 4, 5 and 6
All Four Cylinder Gasoline Engines
See Figures 1, 2 and 3
The oil pump is mounted externally on the engine, eliminating the need to remove the oil pan in order to remove the oil pump.
Fig. Fig. 1: Removing the oil pump-4-cylinder gasoline engines
Fig. Fig. 2: Aligning the punch mark on the spindle with the hole in the oil pump-4-cylinder gasoline engines
Fig. Fig. 3: The projection on the top of the oil pump, drive spindle located in the 11:25 O'clock position. The smaller crescent formed by the notch faces forward-4-cylinder gasoline engines
Fig. Fig. 4: Removing the oil pump assembly
Fig. Fig. 5: Removing the oil pump mounting gasket
Fig. Fig. 6: View of the oil pump gear and drive spindle
it may have jumped time on the chain
the valves wont hit the pistons on this engine...it should be ok.......this may help
FIG : Fig. 3: Timing chain and sprocket alignment-Z20, Z22, Z24 and Z24i engines
All 4 Cylinder Gasoline Engines
See Figures 1 thru 18
The factory refers to the pins as links, but in American terminology this is incorrect. Count the pins. There are two (2) pins per chain link. This is an important step! If you do not get the exact number of pins between the timing marks, valve timing will be incorrect, and the engine will either not run at all or will run very badly.
Z20, Z22, Z24 and Z24i engines do not use the pin counting method for finding correct valve timing. Instead, set the timing chain by aligning its mating marks with those of the crankshaft sprocket and camshaft sprocket. The camshaft sprocket should be installed by fitting the knock pin of the camshaft into its No. 2 hole. And the No. 2 timing mark must also be used.
FIG : Fig. 1: Crankshaft sprocket removal-all 4-cylinder gasoline engines
FIG : Fig. 4: Installing the timing chain tensioner-all 4-cylinder gasoline engines
: Fig. 5: Crankshaft sprocket installation-Z20, Z22, Z24 and Z24i engines
Fig. Fig. 6: Removing the camshaft gear retaining bolt
Fig. Fig. 7: View of the camshaft gear retaining bolt
Fig. Fig. 8: Removing the camshaft gear and timing chain
Fig. Fig. 9: Removing the timing chain tensioner mounting bolts
Fig. Fig. 10: View of the timing chain tensioner assembly
Fig. Fig. 11: Removing the timing chain assembly oil thrower
Fig. Fig. 12: Removing the oil pump drive gear
Fig. Fig. 13: Marking the oil pump drive gear for correct installation
Fig. Fig. 14: Marking the timing chain if necessary
Fig. Fig. 15: Removing the crankshaft sprocket
Fig. Fig. 16: Removing the timing chain guide bolt
Fig. Fig. 17: Removing the timing chain guide
Fig. Fig. 18: Cleaning the timing chain case cover area
L16, L18 and L20B Engines
When the timing chain stretches excessively, the valve timing will be adversely affected. There are two camshaft sprocket locating holes provided to correct the valve timing. Actually there are three sets of holes and timing marks on the camshaft sprocket; the third hole and timing mark are for 6 cylinder Datsun engines and in the case of the Datsun pick-ups, these are obviously ignored.
If the stretch of the chain roller links is excessive, adjust the camshaft sprocket location by transferring the camshaft set position of the camshaft sprocket from the factory position of the No. 1 to the No. 2 as follows:
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