how do i know if my stator went bad or the coils,or the power packs,everything was fine and we where flying along and it just stoped 1978 johnson 85 hp,i have no spark coming out of coils
Normally, the engine is stopped immediately by grounding the powerpacks. This is done either by turning the ignition key to OFF, or by pulling the emergency lanyard. Either of theses would cause the negative ground in the ignition to close with the black and yellow kill wire.
You can test for spark by disconnecting the large red plug at the engine and jumping the starter, or by disconnecting th black and yellow kill wire at the powerpacks and starting normally. In either case, you will have to stop the engine by choking it if it starts.
Re: lost spark out on water today 78,85hp johnson,no lanyard
Did the starter motor turn the engine? It needs minimum 250-300R RPM to spark.
The ignition switch is a kill switch, when you turn the key to off, it grounds the powerpack; that's how they work. Many remotes have the emergency lanyard. Sorry I can't see your setup from here.
Re: lost spark out on water today 78,85hp johnson,no lanyard
First visually inspect the wiring harness connecting the amphenol plug to the remote control. Any trouble spots here? Clean the plug, grease the edges, then reapply.
You can then test the continuity of the wiring harness with an ohmmeter to test for breaks that you may not visually locate. Do not let 12 volts ride that black/yellow wire.
Did you try disconnecting the black/yellow wire and testing for spark as Ezeke advised?
Re: lost spark out on water today 78,85hp johnson,no lanyard
i did not find yellow and black wire no where on motor,i will check for wiring breaks with ohm meter,the key was on when i pluged red plug back in.i dont see any visual marks or brakes in wires
Re: lost spark out on water today 78,85hp johnson,no lanyard
The black wire with a yellow tracer runs from a large M post on your ignition switch through the main wiring harness and the red plug and then to the two powerpacks.
The black and yellow wire is split beyond the large red plug and each piece runs to position D in a 4 wire amphenol plug leadind to each powerpack.
Since the engine ran with the red plug disconnected, the short is not in the black and yellow wires beyond the large red plug at the engine end.
The black and yellow wire is being grounded by the ignition switch or by a short within the wiring harness between the red plug and the ignition switch.
Start by inspecting both sides of the large red plug for possible corrosion.
Be careful in testing the wiring that no voltage rides the black and yellow wire or it will kill the powerpacks. In other words, disconnect the battery and use an ohmmeter.
