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This is my first post, so if this violates any rules, I am sorry just let me know how to correct the issue.
I am working on an 85 Johnson 70hp VRO engine that I pulled from a parts boat that I bought. The motor cranked up and ran fine when I got the boat and after a couple times running it in my driveway (trying to tune and clean the carbs) I noticed that it wouldn't start one time. It lost spark, and I couldn't figure it out, so I went inside and sat down for a while to rest and when I went back out and tried again, it had spark so I ran it and finished what I was doing.
Now, I've installed the motor on another boat and once again I have no spark. This time though, sitting inside and coming back out isn't helping matters. So I started with the ignition wiring, and checked, double checked, and triple checked my ignition switch wiring everything seemed fine.
So I've disconnected my kill switch wire from the back of the ignition switch and this didn't change anything. Then I disconnected the kill switch wire up near the power pack, still didn't change anything. Next, I tested the kill switch wire for ground on both the powerpack side and the boat side of the wire where I separated it near the powerpack and found that the powerpack side of the wire is grounded, whereas the boatside of the wire is not.
This has been completely new to me, as I am not a boat mechanic, I mainly work on trucks. Is it accurate for me to assume that the powerpack has failed? I know that the killswitch wire should not be grounded because that's what kills spark.
Are there any other steps I can take to try and debug this?
I am working on an 85 Johnson 70hp VRO engine that I pulled from a parts boat that I bought. The motor cranked up and ran fine when I got the boat and after a couple times running it in my driveway (trying to tune and clean the carbs) I noticed that it wouldn't start one time. It lost spark, and I couldn't figure it out, so I went inside and sat down for a while to rest and when I went back out and tried again, it had spark so I ran it and finished what I was doing.
Now, I've installed the motor on another boat and once again I have no spark. This time though, sitting inside and coming back out isn't helping matters. So I started with the ignition wiring, and checked, double checked, and triple checked my ignition switch wiring everything seemed fine.
So I've disconnected my kill switch wire from the back of the ignition switch and this didn't change anything. Then I disconnected the kill switch wire up near the power pack, still didn't change anything. Next, I tested the kill switch wire for ground on both the powerpack side and the boat side of the wire where I separated it near the powerpack and found that the powerpack side of the wire is grounded, whereas the boatside of the wire is not.
This has been completely new to me, as I am not a boat mechanic, I mainly work on trucks. Is it accurate for me to assume that the powerpack has failed? I know that the killswitch wire should not be grounded because that's what kills spark.
Are there any other steps I can take to try and debug this?
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