Ignition system help
#1
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I thought my problems were solved, but they are not. Motor still down on power.
To refresh memories, I replaced the old points distributors with Mallory "Ready to Run" Magnetic breakerless distributors.
Today I ran some more test. Voltage across the coil with wires hooked up and keyed on is 4 volts. When I go to positive side of coil to engine block I get 11.5 volts. But 4 volts from + side of coil and - side of coil.
Also measured the coils resistance from + side and - side and its 2.5 OHMS. The coils are original merc point style coils. Do the coils have too much resistance for electronic ignition?
To refresh memories, I replaced the old points distributors with Mallory "Ready to Run" Magnetic breakerless distributors.
Today I ran some more test. Voltage across the coil with wires hooked up and keyed on is 4 volts. When I go to positive side of coil to engine block I get 11.5 volts. But 4 volts from + side of coil and - side of coil.
Also measured the coils resistance from + side and - side and its 2.5 OHMS. The coils are original merc point style coils. Do the coils have too much resistance for electronic ignition?
#2
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I did that change once. From old merc points to Mallory MBI.
I removed an external resistor.
Maybe your boat has a "resistor wire?"
(I know that many older mercs had a resistor wire.)
I was very happy with mine. It was an SBC.
I removed an external resistor.
Maybe your boat has a "resistor wire?"
(I know that many older mercs had a resistor wire.)
I was very happy with mine. It was an SBC.
#3
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Oh yeah.... I had to buy a new coil.
Almost forgot.
It was a mallory and it was very shiny and pretty.
They sold it to me when I bought the MBI.
Same exact shape and size as my original coil.
Almost forgot.
It was a mallory and it was very shiny and pretty.
They sold it to me when I bought the MBI.
Same exact shape and size as my original coil.
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mcprodesign
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07-01-2024 07:43 AM