There is fire to the coil and to distributor but no fire from distributor to spark plug. Installed new distributor, but still won’t start.
Jun 9, 2021 at 12:36 PM
Will not start
1994 GEO TRACKER
PACHYAUTO63
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Hi,
If you remove the coil wire from the distributor cap, do you see spark when cranking the engine? If you do, either there is no distributor rotor or the distributor isn't turning.
I attached a schematic below showing how the system works. Power comes from the battery to the + on the coil. From there, power is grounded via the ECM. When the ECM removes the ground, power finds the next easiest path to ground, and that is to the spark plugs. The signal (removal of ground) is initiated by the signal rotor/camshaft position sensor (which is in the distributor).
Take a look at the schematic below. I highlighted power to the coil and how it grounds through the ECM. I used a red pen showing where the power goes after the ground path is lost.
Did the new distributor come with a new signal rotor and cam sensor?
Let me know.
Joe
If you remove the coil wire from the distributor cap, do you see spark when cranking the engine? If you do, either there is no distributor rotor or the distributor isn't turning.
I attached a schematic below showing how the system works. Power comes from the battery to the + on the coil. From there, power is grounded via the ECM. When the ECM removes the ground, power finds the next easiest path to ground, and that is to the spark plugs. The signal (removal of ground) is initiated by the signal rotor/camshaft position sensor (which is in the distributor).
Take a look at the schematic below. I highlighted power to the coil and how it grounds through the ECM. I used a red pen showing where the power goes after the ground path is lost.
Did the new distributor come with a new signal rotor and cam sensor?
Let me know.
Joe
Image (Click to enlarge)
Jun 9, 2021 at 10:14 PM