2004 Tige 22V Won't Turn Off With Ignition

(wakeborder5) · (wakeborder5) **Join Date: Jun 2002** 07-09-2014, 6:02 PM

I posted this on tigeowners.com as well, but there are a lot of knowledgeable people on here and was hoping I

I finally got my boat from the guy storing it (he's an idiot -- and i also have a hurt knee and wasn't in a hurry to get it and tempt myself with riding). When I fired it up, I went to turn it back off a moment later and the key did not shut the engine down. I then went to the perko and switched it to off -- still running. Then I went to the ignition and turned the key as if starting the engine -- this caused a quick screetching noise from the starter and then the engine turned off.

I figured it's not the ignition because the gauges turn on/off with the key. My understanding from my research is that the engine didn't turn off as I expected when I turned off the Perko because the alternator feeds the engine when it's running and the batteries aren't needed at that point. Is that true?

I gather that this is an issue with the solenoid not accepting the ignition signal to shut off.

Does it seem like this is a solenoid issue?
Does anyone have any instructions or the manual for changing this? I have the Mercruiser 350 Mag and am not sure where it's located.
Should I check something else before the solenoid? What kind of diagnosis can I do?

Thanks!

(kronoss) · (kronoss) **Join Date: Oct 2010** 07-09-2014, 9:35 PM

make sure the engine is not overheating. This can cause the engine not to turn off right away due to spark plugs being flaming hot.

(wakeborder5) · (wakeborder5) **Join Date: Jun 2002** 07-10-2014, 5:22 AM

It was not hot out and the boat had not been started previously, was not revved, nor was it on for more than 30 seconds, so I believe that should rule out the engine overheating

(jbird) · (jbird) **Join Date: Jun 2011** 07-10-2014, 6:17 AM

I wonder if the ignition relay sticking could cause that? I had a sticking fuel pump relay that would continuously run when the engine was off, I swapped the ignition relay for it to diagnose! Although, on mine, disabling power at the perko would shut it off, just a thought!

(wakeborder5) · (wakeborder5) **Join Date: Jun 2002** 07-10-2014, 11:53 AM

I noticed today that I missed one of the negative cables when hooking up the battery that feeds a grounding distribution block for several things under the dash. I don't know if it was that or if something finally came to life after the long, cold winter, but it fired up and turned off without problem this time. Thanks for the input!