Yamaha F250 2005 Fuel pump/ Flo-scan questions?

[finfish1]

Am purchasing my 2520xl with a 2005 F250 Yamaha this Mon. or Tues. after sea trail.Reading an aweful lot of posts regarding fuel pump issues with this year/hp engine.The fuel pump was replaced last season, and one injector last week. 550hrs on motor.Factory warrantied for one season left.I understand there is a low and high pressure fuel pump, is that right? What the story guys, am I buying a problematic engine here or what?

Also, after some investigating, I'm reading that a typical Flo-scan analog meter won't work correctly, because of the two fuel pumps, do I need the Yamaha fuel guage for twice as much?
Help

2005 2520XL F250 Yamaha
R.I.
Reel Job

 

[Primo]

finfish1,
I have the same engine/year. I read similar posts but have never had any problems with the fuel pumps or injectors. I also heard concerns with the floscans. I went with the Yamaha fuel management system because it was recommended by my mechanic over the floscan. However, I do know people that went with the floscan and they haven't had any problems of yet.

 

[samsims]

Have not heard of injector or fuel pump issue on the F250 either.

I would highly recommend the command link gauges though, they work great,but not cheap to buy.

 

[jethro]

Also, after some investigating, I'm reading that a typical Flo-scan analog meter won't work correctly, because of the two fuel pumps, do I need the Yamaha fuel guage for twice as much?
Help

2005 2520XL F250 Yamaha
R.I.
Reel Job

What you read/heard about a Flo-scan not working correctly is completely false. It works in exactly the same manner as the Yamaha conventional fuel flow meter. A small turbine in the sender turns with the flow of fuel and sends a signal to the gauge which is displayed in gallons per hour. For US types anyway. The total fuel used is also calculated and displayed.

Now here is where it gets interesting with an F200/F225/F250/F300/F350 which has an electric lift pump in the system. At any rpm below 1000 the lift pump does not run continuously. It cycles on for ten seconds and then is off for 20 seconds. If you were to view the gauge during the time the pump is on the reading will spike quite high. When it goes off the reading will appear abnormally low. The total amount of fuel is calculated correctly at all times however.

Once the engine is above 1000 rpm the needle on the Flo-scan will work like any other motor. That is, it will remain steady at some GPH value, which depends upon what the engine is consuming at the time.

If you have to know the exact fuel burn rate of your motor when you are below 1000 rpm then you will need the Yamaha Command Link fuel management meter. It does not measure fuel on its way to the motor but guesses the amount fuel that is being used as a function of fuel pressure, injector open duration and the size of the injector orifice. Get an injector clogged somewhat and this gauge is not going to be as accurate as the Flo-scan type.

 

[finfish1]

Hey Jethro, sounds like you know what you're talking about,yamaha mechanic? I spoke with the Flo-scan company, and the rep. talked me out of the purchase. $269 I think.
So I ordered a yamaha fuel management gauge for $620.
He did tell me that the totalizer would still work, however not with the detail you have.
Ok, so the gauge will match the speed and tach, thats nice put not woth the extra money to me, may be to late, I expect it to be in this coming week.
Are you running one.
I got a 2005, F250 on a 2520XL.
Only sea trialed the vessel, own it since this past Thursday, just waiting to run it to R.I. after this storm passes, this Tues. or Wed.
Thank-you much for the reply.

 

[jethro]

I was running an F200 with a Flo-Scan installed. That's how I know that it will work and how it works. I sold the motor and am deciding whether or not to repower with the new Yamaha offshore motor. I don't like the looks of them however.