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1996 225 HP LOSING RPM'S GREATER THAN...

Discussion Forum at MarineEngine.com » Yamaha Outboard » 1996 225 HP LOSING RPM'S GREATER THAN 4000 « Previous Next »

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Marcos Osorio
New member
Username: mrio

Post Number: 1
Registered: 10-2009
Posted on Wednesday, October 14, 2009 - 03:37 pm:   Edit Post Delete Post View Post/Check IP

My yami seems to loose power/rpms after 4000rpms and runs back up then down. When its doing that I squeezed the fuel bulb and then it runs better but when I stop ir returns to the influx of RPMs. I lose anywhere from 300-600 rpm's. I changed both filters. I might have to change the bulb, but don't think its that. This is a 6 carb and dont think it has an o2 sensor. Please Help I would like to go out this week. LOL Thanks
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Rollie Rose
Advanced Member
Username: profisher

Post Number: 554
Registered: 12-2008
Posted on Thursday, October 15, 2009 - 01:23 am:   Edit Post Delete Post View Post/Check IP

Fuel pumps? Check the plugs for washing from to much fuel bypassing a bad diaphram.
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JUST-IN-TIME
Senior Member
Username: justintime

Post Number: 6993
Registered: 09-2006


Posted on Wednesday, October 21, 2009 - 09:52 pm:   Edit Post Delete Post View Post/Check IP

225 what?
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jamie campbell
Advanced Member
Username: outboard_doctor

Post Number: 680
Registered: 02-2009
Posted on Friday, October 23, 2009 - 01:34 am:   Edit Post Delete Post View Post/Check IP

If you have to keep squeezing the fuel primer to maintain steady revs you have a fuel pump prob
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Gus Hutto
New member
Username: gushutto

Post Number: 3
Registered: 11-2009
Posted on Tuesday, November 17, 2009 - 08:17 pm:   Edit Post Delete Post View Post/Check IP

Start with the easy stuff first. I chased a problem like that, and it turned out to be a loose hose clamp that was sucking air.

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