I just put my '41H back together. I had the head off (3 cracks in the
head between the dome and coolant holes), but left the block,
magneto, distributor, governor, etc alone while I was working on
the engine.
With the new head/valve job installed, I set the valve lash, put
everything else back on and went to start the engine. I also couldn't
locate Champion D18Y spark plugs, so substituted NGK AB-6 plugs
(supposedly they are interchangeable)
The battery had been drained, so the charger was hooked up. The
engine cranked normally, but refused to fire. The distributor cap
looks pristine (as does the rotor) and the wires are in good shape.
I pulled two plugs and held them up against the block while I
cranked the starter. No spark.
I pulled the coil wire from the distributor and held it up against the
block. Weak spark.
So, is my problem a suddenly bad coil?
Art
head between the dome and coolant holes), but left the block,
magneto, distributor, governor, etc alone while I was working on
the engine.
With the new head/valve job installed, I set the valve lash, put
everything else back on and went to start the engine. I also couldn't
locate Champion D18Y spark plugs, so substituted NGK AB-6 plugs
(supposedly they are interchangeable)
The battery had been drained, so the charger was hooked up. The
engine cranked normally, but refused to fire. The distributor cap
looks pristine (as does the rotor) and the wires are in good shape.
I pulled two plugs and held them up against the block while I
cranked the starter. No spark.
I pulled the coil wire from the distributor and held it up against the
block. Weak spark.
So, is my problem a suddenly bad coil?
Art