So I have a 1997 40th Anniversary that I just did an engine rebuild on at 300k. Car ran fine when engine was removed, but will not start now that everything is back together.
At first it had no spark, now it has very weak spark.
Some parts were replaced during the build: cap, rotor, wires, CKP sensor.
Wiring harness has been continuity tested for all ignition related circuits.
Car is not setting any codes.
Coil has been replaced, still weak.
Main relay replaced with known good.
Igniter has been swapped for known good, still weak spark.
Fusible links have been tested, and bypassed. Still weak spark.
Grounds triple checked, and then new auxiliaries added. Still weak spark.
Distirubtur, coil, igniter, PCM all check out using factory specs. OBD plug gives me 160rpm while cranking. Injectors fire. Spark is so weak my timing light doesn't detect it, but a clean plug in a lead shows very weak, and yellow.
Engine timing verified, distributor timing verified, compression and leakdown great.
What am I missing?
At first it had no spark, now it has very weak spark.
Some parts were replaced during the build: cap, rotor, wires, CKP sensor.
Wiring harness has been continuity tested for all ignition related circuits.
Car is not setting any codes.
Coil has been replaced, still weak.
Main relay replaced with known good.
Igniter has been swapped for known good, still weak spark.
Fusible links have been tested, and bypassed. Still weak spark.
Grounds triple checked, and then new auxiliaries added. Still weak spark.
Distirubtur, coil, igniter, PCM all check out using factory specs. OBD plug gives me 160rpm while cranking. Injectors fire. Spark is so weak my timing light doesn't detect it, but a clean plug in a lead shows very weak, and yellow.
Engine timing verified, distributor timing verified, compression and leakdown great.
What am I missing?