2002 90Ttlra No Spark

[pjhaddock]

I don't understand it either. But I can unplug the yellow wire and it stops cranking after 1-2 seconds. Immediately plug it back in and it cranks for as long as I want. Immediately unplug it again and it stops after 1-2 seconds. Nothing else touched other than the yellow wire. I'll put the meter on it tonight and see.

[pjhaddock]

It gets even more weird. I hooked everything up front back up and If I plug the harness back in, I can crank with the key or the remote trigger as long as I want. Unplug the harness and only 1-2 seconds before it stops on its own (I have to use the trigger of course). I did keep the trigger engaged once it stopped this time and it will start again for 1-2 seconds on it's own, stop, crank 1-2 seconds, stop, and keep doing that. With the harness plugged in I don't have spark, doesn't matter if the yellow wire is connected or not. Unhook the harness and with the yellow wire unplugged I have spark. The kill switch wire is ok (no continuity to ground unless I pull the lanyard) but I kept the white wire unplugged anyway. I think I give up and am going to take it to the dealer.

[99yam40]

Give an update when you find out the fix.

But I would check voltage on the crank position sensor.
you checked everything else

[pjhaddock]

Wanted to give an update. While waiting 3 weeks for a repair shop I decided to just buy a new CDI. Figured worst case I can sell it for most of what I paid for it if it doesn't work. Well the boat is running now. Fired right up. Thanks for the help.

[99yam40]

Glad to hear it is up and running.

you checked everything you could.
and got some weird readings sometimes.

I still would like to know what the yellow wire being unplugged does to things.

but I guess the manual did point to the CDI, I was just trying to help you get others to validate it.

enjoy the boat now

[exeter27]

Congratulations. And thanks for giving an update. Still lots of time for boating. Enjoy knowing that you fixed it yourself and saved a bunch of $$

[pjhaddock]

Well I guess I jumped the gun and unfortunately it turns out that it's not fixed. Doing this now. Even if I give it some throttle. So frustrated...

https://youtu.be/NRLDu46Dh0M

[99yam40]

Well at least you now have equipment to check voltages to see what they are doing.
write them all down and save them for the future also.

maybe what you are seeing now is a lean sneeze that kills the motor.
hard to tell what is happening just watching a video

[pjhaddock]

I'm stupid yam. I switched #1 & 3 cylinders on the CDI. I was checking TDC and when I did # 3 it said #1 on the flywheel, so I knew then. Running great now. Will go for a ride tomorrow afternoon hopefully to fully test.

[99yam40]

I would still take some voltage readings to save for when you may have problems again to compare things to

[pjhaddock]

Will do. Thanks again for the help. Hopefully I won't be posting any more problems. Lol

[pjhaddock]

So I just got to take it out. Everything is fine unless I run over 3000 RPMs or so for longer than about 15-20 seconds. After that it starts to bog down and lose power. If I run back and start squeezing the bulb it will come back. But after squeezing the bulb a few times or so, the bulb collapses almost like suction. I put a new fuel water separator on it already.

[99yam40]

You have a restriction in the fuel line or tank.
does the tank have a vent?
or a pick up screen?
how about a anti siphon valve?
or pinched line?

[pjhaddock]

Not sure if it would matter but I unscrewed the filler cap and it didn't change anything. Only thing I've touched in the fuel system since it ran good was change the filter. The filter housing looks to be the original (15 years old) and is pretty corroded. Oh, and I've seafoam shocked it. 1g gas to 1 can seafoam. When I unhooked the fuel line from the motor side of the filter there was a clear lining on the inside of the hose that was loose so I cut a few inches off. I'm gonna start with new fuel line and primer bulb I think, and take a gas can to run direct from if it still starves to see where the problem is. Weather is supposed to suck so might not get to tomorrow.

[99yam40]

sounds like the line is falling apart