1972 40 hp merc....want fire

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COACH_J

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i have a 40 hp mercury that for what ever reason want or has quit firing on both cylinders, any help would be grateful, what controls the fire or what can i check first......thanks
 
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Laddies

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Re: 1972 40 hp merc....want fire

Here's the test from CDI
scan-1.jpg
 
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COACH_J

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Re: 1972 40 hp merc....want fire

ok thanks i will run to town and pick up a ohm meter
 
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COACH_J

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Re: 1972 40 hp merc....want fire

ok what i found, was everything was up to specs, what i did was unhook the kill switch, the dealer had installed a cpl weeks ago, took their word it was test run.....no kill switch, motor cranks right up, but want cut off, could this be in the switch, now im not trusting the dealer who worked on it, to carry it back, is it away i can trouble shoot the switch?
 
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Laddies

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Re: 1972 40 hp merc....want fire

Use the ohm meter to track the problem down, hook 1 wire to ground and just work backwards till you find the problem
 
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