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NOYB NOYB is offline
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First recorded activity by BoatBanter: Jul 2006
Posts: 577
Default Yamaha 225 sws / year 2000


"Billgran" wrote in message
...


On 18 Aug 2006 13:36:23 -0700, "shawn" wrote:

I'm having fuel problems. If I leave the engine at idol for 15
minutes when I atempt to leave the dock she will stall. Once I get
going I cant just smash the throttle she will stall. I installed a new
fuel line and changed the plugs and im still having the same problem.
Can anyone help?




Most problems like that are fuel related and the electric fuel pump
pressure should be checked while duplicating the problem. With today's gas
deposits form very quickly and can plug or restrict screens and filters
very easily.

Run the boat in an identical manner with an EFI fuel pressure gauge hooked
up to the test fitting and watch for pressure fluctuations when you
accelerate. If they are erratic or drop quickly, clean out the vapor
separator tank (VST) and replace the high pressure fuel pump screen
inside.

Bill Grannis
service manager


Bill,
I had almost the exact same problem on an '01 250 OX66. Turned out to be a
bad fuel diapragm on one of the fuel pumps.