1976-1985 mercury classic 50

[branlan]

My motor is a 4 cylinder 2 stroke and the top 2 cylinders aint firing too hot. the bottom 2 are firing good but the top 2 have a real light orange flame. i have already eliminated the coils and i haave also replaced the wires coming from what i think is my trigger to my switch box. how is the easiest and best way to find out if i need to replace the trigger, switch box, or stator? please help me

 

[Laddies]

Re: 1976-1985 mercury classic 50

A simple stator test is to swap the red and red/white wires and the blue blue/white wires on the box if the spark problem stay the same you have a triigger/switch box problem if it changes to the other 2 cyls you have a stator problem. Test the trigger by swapping lead at the switch box to see if the problem moves or not, if it goes with the swapped wire it's the trigger if it don't move it's the box. If you have test equipment we can help with specs.

 

[Laddies]

Re: 1976-1985 mercury classic 50

After typing you info twice and the site not posting it, it keeps stalling out let one of the mods try to help you sorry.

 

[branlan]

Re: 1976-1985 mercury classic 50 sparks weak

Re: 1976-1985 mercury classic 50 sparks weak

Thank you for the info. i swapped the blue wire with the red wire and the red/white with the blue/white and none of the cylinders would fire. what does this mean? i also swapped the wire from the trigger to #1 cylinder with the wire to #4 cylinder and nothing changed. so then i took the #4 green wire and moved it down to the #1 spot and then the problem changed to #4 cylinder. do i need a swith box and a trigger or what? please help!

 

[Laddies]

Re: 1976-1985 mercury classic 50

You don't swap colors, just the solid and striped wires of the same color.

 

[branlan]

Re: 1976-1985 mercury classic 50

ok thank you. i miss understood. what about the trigger? do i just swap the wires from the trigger to the switch box or them and the wires to the coil? thank you again for all the help.

 

[Laddies]

Re: 1976-1985 mercury classic 50

Yes