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Sorry for the delay. I haven't been able to work on the engine until now. I acquired some used OEM switch boxes, and with them on, I now have good spark in all cylinders. So it seems the switch boxes were a problem.
Only thing now is that when I DVA test the output at the green wires , I get...
As an update, last night I picked up an online spark tester. With this I could see that there is spark on all cylinders, but weak on all 6. I get 0.5 -5 volts on 4 coils, and about 130v on other two coils. I tested voltage at the output from the switch box and got similar numbers. Could all...
Hi all. Hoping to get some input on the problems I'm having with my 1984 Mercury 90 hp inline 6, with ADI.
Last year I had a problem where I couldn't get it to start unless I sprayed premix into the carbs, and then it would run, but basically couldn't get it above an idle.
I found that there...
