i have a 1990 nissan pick up D21 4 cylinder, it would turn over but not start, whats wrong?
abrahm asked:
I ruled out fuel problems and used a spark tester, found a very weak spark and checked the distributor cap and rotary head(they were corroded) so i changed them. now the spark tester wil flash once or twice then stop(it wont flash again until you shut the battery of and start it up again) any ideas?
I ruled out fuel problems and used a spark tester, found a very weak spark and checked the distributor cap and rotary head(they were corroded) so i changed them. now the spark tester wil flash once or twice then stop(it wont flash again until you shut the battery of and start it up again) any ideas?

Lately I have been seeing worn out Dist shafts and internal bushings. Sounds like a bad distributor to me. Grab the rotor and wiggle it to see if there is play in the shaft.