Temp spike on shut down
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=26719
Printed Date: June-09-2024 at 12:48am
Topic: Temp spike on shut down
Posted By: rfarkash
Subject: Temp spike on shut down
Date Posted: June-29-2012 at 12:58am
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Damn, jinxed myself bragging how cool my engine was running earlier in the week. Got out after work today, and after pulling the kids around on the kneeboard, noticed the temp gage spike all the way on shut down. Didn't rise slowly, just went from 145 to buried in the red. Running right at 145 the entire time engine is on. After kids got in the boat, as soon as I cranked the engine, temp immediately dropped down to normal. Assuming it's a wiring/ground issue, but need some reassurance or diagnostics to run. As an aside, everytime someone is near the stern, approaching the swim platform, I kill the engine vs. pulling the neutral safety - is that SOP or overly cautious? Thanks Ron ------------- Ron 1989 Ski Nautique |
Replies:
Posted By: 89Martinique
Date Posted: June-29-2012 at 1:37am
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definitely a grounding issue. but just pulling the neutral safety doesn't mean its safe. many boats still have their prop shaft turning slowly when in neutral. our Martinique does it often. and my uncle Martinique with the slightest rev his prop shaft will turn. so it is a good idea to cut engine when someone is near the ski deck ------------- Current Boats: 1992 Supra Comp-TS6M PCM 351w HO Pro Boss Pro-Tec Ignition - Full Composite (no wood stingers!) 1989 (3rd Gen) Correct Craft Martinique B/R PCM 351w Power Plus 1984 E-Scow Keuka Lake, |
Posted By: dwcar
Date Posted: June-29-2012 at 1:39am
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Ron, I think it is overkill pulling the neutral but to each his own. Your prop should not be spinning much when at neutral if any. Also you have to stick your feet way up under the boat to get to the prop. Check you clamps on the down side of the raw water pump. put a ratchet on them. ------------- 83Ski |
Posted By: Morfoot
Date Posted: June-29-2012 at 12:41pm
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I agree with Don on this on both counts. The late 80's SN are notorius for having Gnd issues. If I look down to check the gages and I seem to running a little hotter then normal I'll turn the nav lights on, peg the needles to the right then turn it off and watch the temp gauge drop 20'F or so. Most do it unless the gnd issue has been addressed under the dash. I think killing the engine is a bit overkill everytime someone gets near the platform. If it's just a matter of changing out skiers, or picking one up cause it's time to run down the lake then I wouldn't worry about it. I've been doing it for years and it's never been a problem. The prop is a good 4Ft back from the edge of the platform and at an angle with a rudder in front of it as well so you'd REALLY have to be reaching for it with your feet to hit it. Good habit to pull out the neutral knob though while some is back there. I'm still trying to make that a habit myself if I'm gonna get out of the drivers seat and the engine is running. I definately need to change that one. ------------- "Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman" |
Posted By: Bri892001
Date Posted: June-29-2012 at 1:24pm
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This could be a little bit of heat soak too, right? Although, I agree, the gauge moving that far over is most likely ground/electrical. Here is how I added a new ground, wire, then added a ground bus to mine: http://www.correctcraftfan.com/forum/forum_posts.asp?TID=21901" rel="nofollow - http://www.correctcraftfan.com/forum/forum_posts.asp?TID=21901 |
Posted By: 89Martinique
Date Posted: June-29-2012 at 2:24pm
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yeah cc's wiring is very evil. luckily they put in two terminal blocks in our Martinique. one was barely used for a aground and the other had 2 wires on it(for the radio). So i set up a positive terminal block and a ground one. now the gauges barely move if i turn something on and the lights barely dim when they come on and something is running. I am surprised at how horrible it was. But cc makes boats. Not good electrical setups :P ------------- Current Boats: 1992 Supra Comp-TS6M PCM 351w HO Pro Boss Pro-Tec Ignition - Full Composite (no wood stingers!) 1989 (3rd Gen) Correct Craft Martinique B/R PCM 351w Power Plus 1984 E-Scow Keuka Lake, |
Posted By: Bri892001
Date Posted: June-29-2012 at 2:32pm
| I'm wondering if the price of copper was super high during the late 80s, early 90s? It seems like they really skimped during that period. It doesn't sound like the older boats have those sorts of problems. |
Posted By: BuffaloBFN
Date Posted: June-29-2012 at 6:15pm
Dirty neutral ------------- http://correctcraftfan.com/diaries/details.asp?ID=2331&sort=&pagenum=12&yrstart=1986&yrend=1990" rel="nofollow - 1988 BFN-sold "It's a Livin' Thing...What a Terrible Thing to Lose" ELO |
89Martinique wrote:Posted By: BuffaloBFN
Date Posted: June-29-2012 at 6:21pm
I mostly agree except that folks new to boats and the whole skiing thing invariably go looking for something to put their feet on. For someone experienced like 'foot, I barely slow down. 
Let those shorts catch one time and...off to Eric's with the tranny. Or at least we hope that's the worst of it. ------------- http://correctcraftfan.com/diaries/details.asp?ID=2331&sort=&pagenum=12&yrstart=1986&yrend=1990" rel="nofollow - 1988 BFN-sold "It's a Livin' Thing...What a Terrible Thing to Lose" ELO |
Posted By: rfarkash
Date Posted: June-30-2012 at 12:33am
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Electrical gremlins confirmed. Tonight on the lake did a little experiment. Only ignition switch on, temps fine, no spike on shutdown. Turned on Nav lights, as soon as engine off, needle starts to climb. As soon as nav light turned off, needle back to normal. Looks like I'll be crawling around under the dash in the near future to rewire ground  Ron ------------- Ron 1989 Ski Nautique |
Posted By: ultrarunner
Date Posted: June-30-2012 at 12:46am
Anyone getting on the platform or getting off, key off and on the dash. |
Posted By: rfarkash
Date Posted: June-30-2012 at 2:11am
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BTW - noticed your username is Ultrarunner - see you in Vermont July 21? Ron ------------- Ron 1989 Ski Nautique |
Posted By: ultrarunner
Date Posted: June-30-2012 at 2:53am
| Ahhh.....that's a good race. Haven't done that one, but it's on the list in the next couple of years...Good luck to ya! |
Posted By: SNobsessed
Date Posted: June-30-2012 at 10:29am
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+1 for engine off anytime some one is on platform or climbing onto it. My kids wouldn't have it any other way. Helps with not breathing CO also. There really isn't a reason to be in a hurry anyway, out there to relax & have a good time. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: lakedog55
Date Posted: July-01-2012 at 1:11am
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When you shut the boat off The gauge is going to read hot, no water flowing through the motor, Kinda of like your car. When you shut it off it will get hotter. I think a lot of boats do this ------------- Lakedog55 |
Posted By: levinmark
Date Posted: July-01-2012 at 4:44pm
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Our 96' will heat up a bit when shut down. As soon as she is fired back up, temp goes back to normal with the fresh circulation of water. I always lift the doghouse when we are going to relax for a bit after some runs to let her cool down to. I also shut it down any time someone is getting on or off the platform. Better to be safe than sorry. ------------- levin |