I have 1986 nissan 2.4 z24 motor I need the vaccum lines layout for the motor. I need a picture... Hayes manual is bad...

It is 37 years old. When were the big end bearing replaced last?

https://www.google.com/search?q=1986+Nissan+D21+Z24+engine+knocks

and

https://www.google.com/search?q=symptoms+of+worn+connecting+rod+bearings

..

1986 Nissan 720 King Cab with 2.4 Naps Z engine (Carb ...

community.ratsun.net > Technical > Engine

Jul 1, 2009 - 14 posts - ‎5 authors
1986 Nissan 720 King Cab with 2.4 Naps Z engine (Carb based) ... Just yesterday it made a real weird loud panging noise (Kind of ... If you dont surface the head it will usually form better to the bad block deck giving you as much as another 100k !!!!!!!! before it ... Also the z24 HATES head gasket coating.

Idle problem? - Engine - Ratsun Forums - Ratsun.net

community.ratsun.net > Technical > Engine

Nov 17, 2009 - 14 posts - ‎6 authors
I am new to this forum along with Datsun/Nissan trucks. ... doing a lot of reading and trying to become more familiar with the Nissan 720 /z24 engine. ... also if the mixture is out of adjustment it can cause the same symtoms also.the ... Listen near the back of the carb and you should hear a light clicking sound.

nissan hardbody engine rattle - YouTube

nope

its in a haines repair manual

Check this diagrams....



Fig. 9: Emission control system vacuum diagram-1984 Z20 (49 States & Canada)




Fig. 10: Emission control system vacuum diagram-1984 Z24 (49 States & Canada except High Altitude)





Fig. 11: Emission control system vacuum diagram-1984 Z24 (49 States High Altitude)




Fig. 12: Emission control system vacuum diagram-1984 (Calif. w/MT)




Fig. 13: Emission control system vacuum diagram-1984 (Calif. w/MT)


Hope helps (remember rated this).

check fuel filter ,possible tune up ,carb rebuild

For the 2.4L (Z24) SOHC:

Firing Order:
1-3-4-2

Cylinders
P__
u|.|.| Intake Side
l |.|.|....1....2.....3....4......|
l |.|.| Exhaust Side
e
y

Distributor:
.....1.....2
3................4
4................3
.....2.....1
Rotation:
Counterclockwise

internal vacuum leak in carb. replace with weber carb you will be very happy

truck normally has a vacuum hose routing diagram on under side of hood on drivers side.also look for metal tag on center of engine compartment fire wall which gives you a motor id @ and trk model # you can then know what engine vacuum diagram you need.i have a diagram for an 86 720 series Z24 carb engine that can be copied off of truck..chris