So, I went back to the boat today and rechecked voltages as was suggested. I got the following readings:
battery voltage: 12.2 V
coil '+' terminal: 11.3 V and 9.3 V while cranking
I also got the battery tester that Hanley suggested and the battery was good(!). I then fully charged the batteries and my readings got better (I did wait about 20 min after charging was complete):
battery voltage: 12.8 V
coil '+' terminal: 11.9 V and 9.9 V while cranking
But I still have the same problem. The spark from the coil lead is still weak. I see some when I hold it really close to the cylinder head (probably less than 1/8").
So, I think the battery is good and can be ruled out. Wires were replaced by the previous owner about 3 years ago. That leaves coil and EI module as possible suspects. Right? What shall I try to test next? Any advise would be greatly appreciated.
battery voltage: 12.2 V
coil '+' terminal: 11.3 V and 9.3 V while cranking
I also got the battery tester that Hanley suggested and the battery was good(!). I then fully charged the batteries and my readings got better (I did wait about 20 min after charging was complete):
battery voltage: 12.8 V
coil '+' terminal: 11.9 V and 9.9 V while cranking
But I still have the same problem. The spark from the coil lead is still weak. I see some when I hold it really close to the cylinder head (probably less than 1/8").
So, I think the battery is good and can be ruled out. Wires were replaced by the previous owner about 3 years ago. That leaves coil and EI module as possible suspects. Right? What shall I try to test next? Any advise would be greatly appreciated.
Comment