Merc 3.0L no spark at coil.

[Chobes]

Thanks all in advance for your responses!

1986 3.0L Merc 140. Has no spark at Coil. I stored for winter just uncovered and charged battery. cranked motor and no fire or sputter, checked fuel and it is squirting for the carb so assume it is not a fuel issue. Put my spark tester across the #1 plug and nothing. checked voltage at (+) terminal on coil have 10+ volts. checked it on the (-) terminal and get same voltage. so I am getting the juice I need. Next i put my spark tester on coil and grounded it. No spark! even jumpered 12V directly from battery to the (+) terminal on coil.

New coil? just replaced it last year! did I miss something?

Time to switch to electronic ignition? if so Any suggestions on which make of electronic ignition?

Thanks for your time!

 

[Bondo]

Re: Merc 3.0L no spark at coil.

Ayuh,.... Change the Points, they tell the coil when to fire,...

 

[Chobes]

Re: Merc 3.0L no spark at coil.

Thanks, I think that is my next step. Just hooked up an old engine analyzer and it was reading that the points were open the whole time i was cranking the motor. . isn't she a beauty! off to store first thing tomorrow!