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#12685236 - 03/22/18 07:58 PM 2004 Yamaha
retiredfire Offline
Green Horn

Registered: 09/24/16
Posts: 14
I have a 2004 Yamaha 225 fuel injected that has started acting up, starts and runs fine off the trailer but the longer you run it then try to idle it keeps dying, finally the only way you can get it to start is to kick it out of gear and give it full throttle. It will start but when you pull it back down to idle or go to neutral it dies again. Did a pressure test on the fuel pumps, it has two and both have the right pressure, any ideas would be appreciated.

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#12686963 - 03/23/18 11:03 PM Re: 2004 Yamaha [Re: retiredfire]
Curtbass Offline
Extreme Angler

Registered: 04/17/15
Posts: 1487
Loc: Grand Prairie, Tx
Time for service??? Fuel filters? Have injectors ever been flow tested? If not then they're way past due. Dont want injectors leaning out & seizing motor up. Way cheaper to service than pop a motor from lack of manufacturers service guidelines.
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'98 Tr20 Triton
'94 Merc 200Xri

92' ChampioN 201DCR Elite
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#12688214 - 03/25/18 08:20 AM Re: 2004 Yamaha [Re: retiredfire]
RedRanger521 Offline
Pro Angler

Registered: 01/18/04
Posts: 551
Loc: Bowie TX USA
Oxygen Sensor? I thought the OX 66 was notorious for that back then
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#12689283 - 03/26/18 06:45 AM Re: 2004 Yamaha [Re: retiredfire]
retiredfire Offline
Green Horn

Registered: 09/24/16
Posts: 14
Changed the fuel filters, injectors are probably next, where is the oxygen sensor at?

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#12689379 - 03/26/18 08:10 AM Re: 2004 Yamaha [Re: retiredfire]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11407
Loc: Littlefield Tx & Lake A. H. US...
Manual fuel pump diaphragms is where I would start.
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The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD

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#12690554 - 03/26/18 08:20 PM Re: 2004 Yamaha [Re: retiredfire]
RedRanger521 Offline
Pro Angler

Registered: 01/18/04
Posts: 551
Loc: Bowie TX USA
Not sure where the Oxygen Sensor is located. A good friend of mine ran the OX66 back then and he had to replace it about every 18 -24 months or so because it made it run like yours in the description. Sorry but I was running a Black Motor back then.

R521
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#12690853 - 03/27/18 05:55 AM Re: 2004 Yamaha [Re: retiredfire]
boatwhisperer Offline
Extreme Angler

Registered: 09/25/10
Posts: 1498
Loc: hurst, tx
o2 sensor is on the starboard side in the number 1 cylinder area
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