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#11705251 - 07/05/16 11:27 AM fl 200 won't reach WOT
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
my new, 1 yr old fl200 has worked flawlessly untill Saturday. while getting on plane it hiccuped and started running slow. will idle fine, just barely gets on plane and won't go over 4000 rpm. changed the fuel/water separator and the primary bowl filter on the engine, both were clean, but changed em anyway. made no difference. both of the better shops around here say it will be 2-3 weeks before they can get to it and we were planning on taking the boat to Rockport on the 28th. any ideas?
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#11705307 - 07/05/16 11:52 AM Re: fl 200 won't reach WOT [Re: smooth move]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10537
Loc: Littlefield Tx & Lake A. H. US...
Whats an fl200? I would check to see if all plugs are firing and cylinders hitting first. Googled fl200 and it shows to be some kind of paternity test.
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#11705394 - 07/05/16 12:31 PM Re: fl 200 won't reach WOT [Re: gary purdy]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
Originally Posted By: gary purdy
Whats an fl200? I would check to see if all plugs are firing and cylinders hitting first. Googled fl200 and it shows to be some kind of paternity test.
the in line 4 cyl yamaha. it runs smooth, no missing, just acts like it won't take full throttle. checked the linkage it getting full throttle travel.
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#11705593 - 07/05/16 02:27 PM Re: fl 200 won't reach WOT [Re: smooth move]
bronco71 Offline
Extreme Angler

Registered: 02/05/06
Posts: 1049
Loc: Farmers Branch/Sulphur Bluff
I'm not too familiar with that engine but since you replaced the filters my guess would be the Oxygen sensor....


Edited by bronco71 (07/05/16 02:28 PM)

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#11705895 - 07/05/16 04:49 PM Re: fl 200 won't reach WOT [Re: smooth move]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
it just happened all of a sudden while getting on plane. under warranty, but everyone's full up right now, so i might not be taking the boat on vacation. i could live with it as it is for a few days, but i'm scared it would hurt the engine. it's very slow to get on plane and i don't hardly ever run over 35-38 mph anyway.
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#11705922 - 07/05/16 05:05 PM Re: fl 200 won't reach WOT [Re: gary purdy]
Ol Man River Offline
Extreme Angler

Registered: 06/16/11
Posts: 1226
Loc: Orange, Texas
Originally Posted By: gary purdy
Whats an fl200? I would check to see if all plugs are firing and cylinders hitting first. Googled fl200 and it shows to be some kind of paternity test.


Yamaha site shows a F200 which is an inline four stroke.

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#11705934 - 07/05/16 05:10 PM Re: fl 200 won't reach WOT [Re: smooth move]
Ol Man River Offline
Extreme Angler

Registered: 06/16/11
Posts: 1226
Loc: Orange, Texas
As already mentioned, I would check for fire at all cylinders first. May only be firing on half which would explain lack of power. If that's the case, it would be an electrical issue.

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#11706065 - 07/05/16 06:24 PM Re: fl 200 won't reach WOT [Re: gary purdy]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
Originally Posted By: gary purdy
Whats an fl200? I would check to see if all plugs are firing and cylinders hitting first. Googled fl200 and it shows to be some kind of paternity test.

i may be dyslexic.
F200
LF200
F225
LF225
OWNER’S MANUAL
LIT-18626-06-76
69J-28199-16
U.S.A.Edition
ZMU01690
Read this owner

s manual carefully before operating your outboard motor.
U69J16E0.book Page 1 Thursday, June 9, 2005 10:54 AM
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#11706192 - 07/05/16 07:36 PM Re: fl 200 won't reach WOT [Re: smooth move]
bronco71 Offline
Extreme Angler

Registered: 02/05/06
Posts: 1049
Loc: Farmers Branch/Sulphur Bluff
There is an FL200 service manual for sale here....it does exist. Web search shows bad oxygen sensor causes reduced rpm on that engine.

FL200 MANUAL

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#11706254 - 07/05/16 08:01 PM Re: fl 200 won't reach WOT [Re: bronco71]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
Originally Posted By: bronco71
There is an FL200 service manual for sale here....it does exist. Web search shows bad oxygen sensor causes reduced rpm on that engine.

FL200 MANUAL

i hope it's that simple. thanks for the replies.
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#11724351 - 07/15/16 11:08 AM Re: fl 200 won't reach WOT [Re: smooth move]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
Well, it was a bad throttle body. Steve at Meeks says it's the first one he's seen fail. lucky me. it's covered under warranty. he also said that i had carbon build up in the cylinders and is doing a de-carb. engine only has 84 hrs on it. is this normal. if it carboned up that fast, wouldn't that be a defect and be covered by warranty? he says i'm not running it hard enough. i cruise at around 4000 rpm. that seems hard enough to me.
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#11724870 - 07/15/16 03:41 PM Re: fl 200 won't reach WOT [Re: smooth move]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10537
Loc: Littlefield Tx & Lake A. H. US...
You need to start adding a carbon cleaner.
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#11724895 - 07/15/16 03:51 PM Re: fl 200 won't reach WOT [Re: gary purdy]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
[quote=gary purdy]You need to start adding a carbon cleaner.
[
/quote]
i will, but DANG, at 84 hrs.
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#11725212 - 07/15/16 07:30 PM Re: fl 200 won't reach WOT [Re: smooth move]
Curtbass Online   content
Angler

Registered: 04/17/15
Posts: 484
Loc: Grand Prairie, Tx
Gary, could carbon buildup have been caused by the defective throttle body that was replaced ? Decarb being done & replace throttle body may take care of all of it. I still run sea foam through mine every 3 or four tanks. Older Rude 200.

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