Author Topic: HECK OF A RIDE.THROTTLE PROBLEMS  (Read 5782 times)

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Offline terry

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HECK OF A RIDE.THROTTLE PROBLEMS
« on: June 26, 2010, 10:00:49 AM »
WE HAD THE BOAT OUT LAST NIGHT AND WERE RUNNING IT AROUND ARE LOCAL LAKE AND I HAD IT WIDE OPEN AND WENT TO SLOW DOWN AND THE BOAT KEPT FULL SPEED,I HAD TO PULL THE KEY TO SHUT IT DOWN.THE THROTTLE MOVED FREE WITH NO BINDING TO NEATUARL,BUT WHEN I WENT TO START THE BOAT IT REVED TO LIKE 5000 RPM.I WORKED THE CONTROLS AND GOT IT TO WERE IT IDLED AT 900 RPM THEN IT RAN FINE.HAD IT HAPPEN TWICE WHILE OUT.I CHECKED ALL MY LINKAGE,THROTTLE,CARBS ETC FOR BENT OR BROKEN PARTS,OR ANYTHING THAT MAY OR COULD CAUSE BINDING,I FOUND NOTHING.I WAS TOLD THAT JOHNSON USES PLASTIC ARMS WITH SPRINGS TO ADVANCE THE FLYWHEEL?WAS TOLD A SPING MAY BE STICKING.THAT MAY MAKE SENSE WITH THE THE BOAT AT 5000 RPM IN NEATURAL.EACH TIME THIS HAPPEN I WOULD WORK THE CONTROLS BACK AND FORTH TILL I COULD GET IT WERE IT WOULD COME BACK TO 900 RPM.ANYONE GOT ANY IDEAS.THANKS
terry/sandee - 1978 cvx 16 deluxe-modified 2000 100hp johnson.78 cvx16-140 mercury.87 stratos vt rocket 225 Yamaha v-max.

Offline DanR

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Re: HECK OF A RIDE.THROTTLE PROBLEMS
« Reply #1 on: June 26, 2010, 01:34:47 PM »
I have an idea, change that spring!
1974 CV16
2001 GX205
1978 Venture bass boat

Offline Rich_V174SS

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  • 1967 V174 Crestflite SuperSport Modified
Re: HECK OF A RIDE.THROTTLE PROBLEMS
« Reply #2 on: June 26, 2010, 05:20:43 PM »
I would also check that throttle cable to make sure it's pulling your throttle linkage closed. Have someone hold the linkage on the engine while you move the throttle control to make sure the cable is pushing and pulling without slipping. I've seen control cables go bad like that and I've seen control boxes go bad too. Check them both.
1967 V174 Crestflite SuperSport Modified
1987 Mercruiser 190 3.7LX/Alpha One

1970 V176 Swinger
1983 Mercury 115

Offline Rosscoe

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Re: HECK OF A RIDE.THROTTLE PROBLEMS
« Reply #3 on: June 26, 2010, 06:22:22 PM »
Yikes!
Not a good feeling! I wouldnt run it again until you find out the problem. :o
Ross
61 Surflite 1964 90HP Johnson project
67 V163 Bayflite Super Sport  1989 100HP Merc
67 V164 Bayflite 120HP
67 V174 Crestflite Rat Rod
71 V175 Crestflite 350ci -Jet
73 GT 160
84 CVX 17  83 115 Merc
88 CVX-23 350 Mag

Offline 74CV16

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Re: HECK OF A RIDE.THROTTLE PROBLEMS
« Reply #4 on: June 28, 2010, 04:42:31 PM »
this is why I drive a Mercury! 8)

are you able to grease your throttle leakage?  That's where I would look........that and the flywheel issue.
Go fast or go home!

Offline Eric_Michael

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  • '83 CVX-16 / 175 HP
Re: HECK OF A RIDE.THROTTLE PROBLEMS
« Reply #5 on: June 29, 2010, 12:27:39 AM »
I have an idea, change that spring!

Uhhh, after an experience like that....

Change your shorts.  Then change the spring!   :o

Offline Rosscoe

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Re: HECK OF A RIDE.THROTTLE PROBLEMS
« Reply #6 on: June 30, 2010, 08:53:07 PM »
I have an idea, change that spring!

Uhhh, after an experience like that....

Change your shorts.  Then change the spring!   :o

Yeah the shorts first!  ;)
Ross
61 Surflite 1964 90HP Johnson project
67 V163 Bayflite Super Sport  1989 100HP Merc
67 V164 Bayflite 120HP
67 V174 Crestflite Rat Rod
71 V175 Crestflite 350ci -Jet
73 GT 160
84 CVX 17  83 115 Merc
88 CVX-23 350 Mag