Stalls when shifting into FWD |
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cool hand
Newbie Joined: July-06-2010 Location: Brownsburg, IN Status: Offline Points: 17 |
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Define easily? Should I be able to spin it and how many rotations should it spin if I were to try and give it a wing?
Maybe i could get a turnover resistance using a small torque wrench. Havent checked, will try and check tonight. |
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Lucas Clark
1992 Sport Nautique |
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79nautique
Grand Poobah Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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it will have a small amount of reistance but not much and it should be uniform for 360 degrees and it doesn't matter how many turns. If it sticks or has more resistance in one area verses another then the alignment is off and needs adjusted.
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akabulla
Gold Member Joined: November-15-2008 Location: United States Status: Offline Points: 649 |
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Throw some water on the strut bearing and you should be able to rotate it with one finger.
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cool hand
Newbie Joined: July-06-2010 Location: Brownsburg, IN Status: Offline Points: 17 |
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Ok, update time again.
Took it out lake freeman saturday and the engine ran good. If anything then engine seems to keep running better. However, in the water I was checking the resistance on the prop and there seems to be a lot. Definitely doesn't spin freely in neutral. Using my feet to spin the prop (neck deep in water), I could spin it with my feet, but it was fairly hard to rotate. Resistance seems the same both directions, but it I had to push with my foot fairly hard to get it to rotate at all. |
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Lucas Clark
1992 Sport Nautique |
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kapla
Grand Poobah Joined: March-27-2008 Location: BA, Argentina Status: Offline Points: 6148 |
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definetely looks like you need to work on the alligment..
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<a href="">1992 ski nautique
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cool hand
Newbie Joined: July-06-2010 Location: Brownsburg, IN Status: Offline Points: 17 |
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Spent a few minutes looking at it lastnight again. It seems to spin harder counterclockwise than clockwise. I read Erics alignment thread a couple times familiarizing myself with that process.
It looks like to really have good access to this stuff I need to pull the back seat that section of floor. |
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Lucas Clark
1992 Sport Nautique |
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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figure the boat is 18 years old and probably never aligned, I think you'll be surprised
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"the things you own will start to own you"
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WakeskateNW
Groupie Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Can anyone confirm that it was a misaligned shaft causing stalling when shifting from neutral into forward? I am having the same issue in my '89; shifts perfect into reverse but stalls half the time when going into forward.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10606 |
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Well, Cool Hand hasn't logged in since Dec 2 2010 so I don't think you'll be getting an answer from him. I think I'd start by looking at making sure the throttle and shift cable and carb are adjusted correctly before assuming that an out of alignment shaft will cause your problem. It's gonna be out of alignment whether it's turning frontwards or backwards. You didn't mention whether you have a tough to turn shaft.in your boat. Being an 89 You would have a PCM transmission with a 1:23 to 1 fwd ratio and about a 1.8 to 1 reverse ratio but the slightly higher load due to the gearing difference when you put it in fwd is not the problem unless you have tuneup issues or like mentioned earlier, cable adjustment problems. |
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WakeskateNW
Groupie Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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swam under the lift today after my set to give the prop a spin, and I am happy to report my prop spins freely both directions with one finger. My idle was a little low but bumped it up to 10 with the engine warm. Still has the stalling issue so turning focus to carb tuning and cable adjustment.
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phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6147 |
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Likely a vacuum leak or too lean air/fuel idle mixture. Start tuning and buy a cheap vacuum gauge. Vacuum should be at least 15 inches idling in gear pushing against the trailer. Also, check initial ignition timing. Retarded timing can make it lazy at idle.
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WakeskateNW
Groupie Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Last night after running the boat hard across the lake I had a moment of clarity about my issue after paying close attention to the temp gauge. Following my hunch I pulled the thermostat housing and whaddyaknow?.... no thermostat!
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MechGaT
Senior Member Joined: March-09-2015 Location: Chattanooga Status: Offline Points: 271 |
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Help me out, how does the lack of a thermostat cause a problem shifting into fwd?
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'92 Sport Nautique
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WakeskateNW
Groupie Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Well the water in my lake is currently ice cold glacier run off and the engine couldn't warm up to a temperature it liked during normal operating conditions. it was just acting cold blooded all the time and apparently it was just enough to stall the engine. Unfortunately the local nautique dealer gave me the 160 stat instead of the 143 one I asked for but when operating at 180 degrees the shift issue is gone. Going to get the correct thermostat later this week and hopefully will see the temp gauge reading in the 160 range.
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MechGaT
Senior Member Joined: March-09-2015 Location: Chattanooga Status: Offline Points: 271 |
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OK. I didn't realize no t-stat would cause that noticeable of a problem.
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WakeskateNW
Groupie Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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I bet most boats wouldn't have an issue running without a thermostat. My boat definitely prefers being warm. Perhaps that points to other underlying issues I haven't discovered yet.
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Dreaming
Platinum Member Joined: May-21-2010 Location: Tacoma, WA Status: Offline Points: 1870 |
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WSNW - don't look too hard for a problem that is not there... Not operating an engine at temperature can have all kinds of different performance effects. get your thermostat in, and see if that corrects the issues you are having. Summer is coming!... supposed to hit 70 this next week
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