Key Switch? |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Posted: June-06-2015 at 5:37pm |
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My 98 sport turns over and starts immediately but won't stay running as soon as I let go of the key.. If I hold it on start it will run fine, as soon as I let it go to run, it dies. I've checked the killswitch and that is fine. Anything else to look at first, oror replace the key switch because it's probably bad?
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'63 American Skier - '98 Sport Nautique
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Get the VOM out and make sure you are getting 12 volts out of the R terminal when the key is in the run position. If not, then change the key switch. Report back. Don't change parts without testing first becoming just a "parts changer"!
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Pete, I didn't have the meter handy so I changed out the cap and rotor, plugs, ignition relay, exhaust risers, and just to be safe I replaced the drain plug. Mr. Brainard, I think I've been around here a few minutes, long enough for you to know I'm not a "parts changer"! Give me a little bit of credit! Thanks for the suggestion. Right after I posted this our guests showed up so I wasn't able to do any troubleshooting, will get to it tomorrow. Had to take them around the lake in the Glastron, oh well. |
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'63 American Skier - '98 Sport Nautique
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DrCC
Grand Poobah Joined: April-12-2004 Location: at home Status: Offline Points: 2867 |
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Ah, some 007 stylin' an profilin' !!
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tryathlete
Platinum Member Joined: April-19-2013 Location: Lake Villa, IL Status: Offline Points: 1797 |
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While you're swapping out the drain plug (ok
Humor attempt over), I had a similar problem, start, then stall. All I did was bleed some air out of the pressure test port on the fuel line (Shrader valve). It Must have gotten into the system when the fuel filters were changed. It solves the problem for me. |
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2008 MasterCraft 197TT
1996 Nautique Super Sport 1988 Waterlogged Supra Mariah |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Good to know, thanks for the suggestion.
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'63 American Skier - '98 Sport Nautique
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ArtCozier
Platinum Member Joined: April-25-2012 Location: Orlando FL Status: Offline Points: 1023 |
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If it's a GT40, there is a diode in the harness where the ignition wire comes off the start relay to feed the ignition circuit. If that diode fails, it will behave as described. I would investigate the kill switch circuit thoroughly before getting into the harness.
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"Art"
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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David, Sorry but I didn't mean to offend you in any way but you did give me the impression you were going to change out the switch before testing.
Knowing you from being on CCfan for all the years, it did surprise me! Have you had a chance to look for the problem yet? |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Pete, no offense taken! I'm actually pretty hard to offend.
This was one of those weekends where the kids events never seemed to end, had no time to get to the boat. Looked a bit this morning, found that my cheapo Radio Shack multi meter won't read resistance, changed the battery for a new one and still nothing. But, I have power to one side of the kill switch, not the other, so hopefully that's the issue. I have to leave now but will get back to it tonight, it's possible the 2 leads are connected to the wrong prongs on the kill switch, there are 4 available, I think one pair are for 2-stroke's. I can't see well enough so have to get a mirror to see if the prongs are marked on the switch. I'm wondering if when the upholsterer had that coaming pad off this winter to put the new skin on he may have pulled the leads from the kill switch and put them back on the wrong studs. I'm hoping it's that easy .... |
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'63 American Skier - '98 Sport Nautique
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Sleepyone
Groupie Joined: September-05-2014 Location: Brandon Ms Status: Offline Points: 91 |
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was it the drain plug ?
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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I don't think so, but I installed a drain plug relay to take the load off the plug just in case. |
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'63 American Skier - '98 Sport Nautique
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Haha, it could be as easy as what you're saying. That kill switch needs to be in order for the fuel pumps to run.
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Great idea but I hope the relay contacts are rated at 30A. The plugs really pull the juice! |
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74Wind
Grand Poobah Joined: August-02-2011 Location: Georgia Status: Offline Points: 2101 |
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Pete I would have thought you'd advise the plug be installed with proper alignment.
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1974 Southwind 18
1975 Century Mark II |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Just wanted to wrap this one up a few weeks later.
It was the kill switch, wires were attached to the wrong terminals. Like I said above I'm assuming the upholsterer had to disconnect it and reconnected it wrong. But, while I was at it with the meter it seemed to me that the switch was hit and miss even with the lanyard connected, like the plunger wasn't activating it early enough in the stroke. The boat has run fine since but I just got a new kill switch in and will replace this one shortly. |
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'63 American Skier - '98 Sport Nautique
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s_kelley2000
Senior Member Joined: December-03-2012 Location: Boylston, MA Status: Offline Points: 141 |
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How is the condition of the safety lanyard itself? Is it really faded? When I first got my boat the lanyard was really faded to a pink color and the plastic had weakened to the point where it could not consistently hold the kill switch button in. Once I figured out that was the problem, a few rounds of duct tape made it thick enough to get through the weekend and then a new lanyard solved the problem permanently.
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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It is faded and almost looked like some stress around the bend in the plastic. I'm going to toss this one now that I have the new one that came with the switch. I keep a spare lanyard in the tool box as a just in case, though I made up a short jumper wire with female spade connectors at both ends while I was waiting for the new switch to arrive, will put that in the tool box as well.
Maybe a new lanyard would cure the switch, but for the few bucks a new switch cost I'm happier just changing it out. |
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'63 American Skier - '98 Sport Nautique
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s_kelley2000
Senior Member Joined: December-03-2012 Location: Boylston, MA Status: Offline Points: 141 |
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Your description of the lanyard sounds very similar to mine. Glad your switch came with a new one. I didn't want you to change out the switch only to have the same problem and start chasing fuel pump breakers, etc.
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ArtCozier
Platinum Member Joined: April-25-2012 Location: Orlando FL Status: Offline Points: 1023 |
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When you're in a pinch with these lanyard switches, a penny inserted between the button and the plastic finger that holds it down will cause the finger to hold the button down a bit more firmly. I've done this many times. The rich folks can use a dime.
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"Art"
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