Out of time or spark plug wires installed incorrectly. The distributor may be worn out.
Only if you experience excessive "pinging" at acceleration
1342
90000 mpg
A '79 datsun pick up would have came with a 2.0L L20B engine.
From what I understand it's in the alternator.
from this site http://www.mpgomatic.com/2007/10/08/super-cheap-high-mpg-cars-1978-1981/ it shows that the Datsun PICKUP 2WD does 39/48
A bad spark plug will cause a 1982 Datsun King cab pickup not to fire. A clogged fuel filter will also prevent it from firing.
Backfiring in any motor is either badly out of time or a burnt valve.
58ft/lb
27 mpg hwy
I get 27 mpg
1800.00