04-05-09, 06:07 PM | #1 |
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tach ? 4 1fast of zook
at idle my tach works fine and all the way up 1900 r's. after that when the vibration comes on it shuts down. Whats the prob and where do i start looking ?
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04-05-09, 06:16 PM | #2 |
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loose wire either in the tach or under the hood. depends on moter where but look at the #1 sparkplug wire would be the second place i would look....
zooker
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04-05-09, 06:26 PM | #3 |
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there is a lil blk box on top of the motor, looking at the motor it to the rt hand side level w/ the flywheel. The top rhs red wire is broken what does this wire do
The motor is a 40 mariner 2 carb made in japan 6E9 L 412818 No loose wires under the dash
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04-05-09, 06:54 PM | #4 |
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what year mariner??
zooker
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04-05-09, 06:57 PM | #5 |
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the motor is a 1984
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04-05-09, 06:58 PM | #6 |
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it's a yamaha built mariner... bet the red wire is the problem..
zooker
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04-05-09, 07:04 PM | #7 |
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yes , zactly
thios is the motor that 1FAST and i were gonna try to hot rod at the beginning of last summer, we just couldnt find parts, cmon you remember?
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04-06-09, 05:57 AM | #8 |
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Look under dash and see if you have the same wire at the tach. A loose or broken wire is goona mean no tach at all...........it either is gona work or not. Does the tach run up to 1900 and then fall off or hold at that rpms?????
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04-06-09, 07:01 AM | #9 | |
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Quote:
Gonna make a few phone calls today and find out bout the red wire
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04-06-09, 02:08 PM | #10 |
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is there a simular box and wire on the other side of the motor? V-6s have a box on top of each head by fly wheel if one box is going out you can plug it in to the other side.
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04-06-09, 02:45 PM | #11 |
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nope, the wires are just held there to keep them from getting caught in the fly wheel
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04-06-09, 02:52 PM | #12 |
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Turns out the red wire is the wire that is possed to go from the rectifire to the battery, and is for the charging sys. The tach runs off the alternator and it is very rare that the charging systen goes out on these motors. The mechanic i talked to on the phone this morning said he knew for a fact that the alt was good because i was getting a signal to the tach. i was told that the red wire deffanatly needs to be hooked up, and more than likely i have a bad tach. bummer for me, what does a mariner tach cost?
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04-06-09, 05:13 PM | #13 |
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$30 or so..
zooker
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04-06-09, 05:45 PM | #14 |
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04-08-09, 04:04 PM | #15 |
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no tach needed! as y'all know i reconnected the red wire, well i got the boat on the water today and prob solved it WAS the red wire
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