Hi Jon, Just to be clear, are you talking about no spark on ONE plug, or no spark on ALL plugs? Can I assume no spark at all? Was there a prior thread you posted where you discussed some of this with Farley? For what it's worth, I'm pretty sure the neutral/safety switch in the control box doesn't even allow the engine to turn over when it's open, so the you might be spared another trip into the B...B...B...booooooxxxxx! There's definitely a chance it could be the kill circuit (black and yellow wire) since she fires when the red plug is disengaged (which opens the kill circuit therefore preventing the kill circuit from preventing spark). ps - forgive my pathetic sense of humor. Just felt the need to respond to that portion of your opening post.
Hi Jon,Chances are it is the key switch and its the easiest thing to eliminate in early diagnostics of a no spark condition. They are probably original and are shorting to ground and need to be replaced. If I remember your boat you have side by side mounted standard boxes? I would replace both keyswitches since you are going to have to split them apart anyway. When you're inside the boxes, closely inspect the wiring from the harness to the switches and look for black or green contamination of the wires. You may need to cut back the wiring a considerable amount to find some nice copper again before you make your new splices to the new switches. I don't remember if the harness wiring was tin or nickel plated in those days which would be great for a clean splice. The only place the black and yellow ignition kill circuit would come in contact with ground is in the kill switch innards. Have you ever gotten a shock from the boxes? That may point us in a different direction like a broken black and yellow touching the box case and giving you a taste of ignition energy!
Quote from: "fitz73222"Hi Jon,Chances are it is the key switch and its the easiest thing to eliminate in early diagnostics of a no spark condition. They are probably original and are shorting to ground and need to be replaced. If I remember your boat you have side by side mounted standard boxes? I would replace both keyswitches since you are going to have to split them apart anyway. When you're inside the boxes, closely inspect the wiring from the harness to the switches and look for black or green contamination of the wires. You may need to cut back the wiring a considerable amount to find some nice copper again before you make your new splices to the new switches. I don't remember if the harness wiring was tin or nickel plated in those days which would be great for a clean splice. The only place the black and yellow ignition kill circuit would come in contact with ground is in the kill switch innards. Have you ever gotten a shock from the boxes? That may point us in a different direction like a broken black and yellow touching the box case and giving you a taste of ignition energy!yep, yep, side by side boxes...never gotten a shock from the box...I will open them up tomorrow and look for corrosion, I think i have a source for two switches, I'll make that call...I'll post findings when i get the boxes open thanks Farl!
Quote from: "Rhojo"Quote from: "fitz73222"Hi Jon,Chances are it is the key switch and its the easiest thing to eliminate in early diagnostics of a no spark condition. They are probably original and are shorting to ground and need to be replaced. If I remember your boat you have side by side mounted standard boxes? I would replace both keyswitches since you are going to have to split them apart anyway. When you're inside the boxes, closely inspect the wiring from the harness to the switches and look for black or green contamination of the wires. You may need to cut back the wiring a considerable amount to find some nice copper again before you make your new splices to the new switches. I don't remember if the harness wiring was tin or nickel plated in those days which would be great for a clean splice. The only place the black and yellow ignition kill circuit would come in contact with ground is in the kill switch innards. Have you ever gotten a shock from the boxes? That may point us in a different direction like a broken black and yellow touching the box case and giving you a taste of ignition energy!yep, yep, side by side boxes...never gotten a shock from the box...I will open them up tomorrow and look for corrosion, I think i have a source for two switches, I'll make that call...I'll post findings when i get the boxes open thanks Farl!Hey John,Did you go inside the boxes for a look?
