DAWGONIT
04-06-2008, 06:34 AM
Folks,
If you hadn't read the previous thread, it's here: http://www.tidalfish.com/forums/boat-talk/226135-yamaha-f225-knocking-pinging-misfires.html.
So here's the deal :-( After I posted the last update, a few of us were heading out to take some happy snaps for Harry, as well as drop a few lines. On the way out of Lynnhaven, I thought I had felt a few sputters, but attributed it, again, to the incoming tidal rush. So we clear the Lesner and the no wake buoy and power up to 25 knots and settle out heading for Cape Henry~all seems good. About 6 minutes later, the RPMs fall off on the starboard motor, the same offending one as before, and it begin to shake violently and detonate/backfire. Here we go again. So it's an about-face and head back to the inlet singled-up on one motor.
In disbelief, I try it a few more times on the way in, it runs, then stumbles, then goes kaput :-( So now it's back into the hands of the mechanics & big brains @ Yamaha.
The following Monday, which was a small craft advisory all day, they take DAWGONIT into Back Bay and it takes over 90 minutes for the problem to show itself. Now they're believers and they cull all the data, call & send the info to Yamaha and the big brains come back w/ a faulity idle air control valve which was causing the ECM (computer) to overheat thus totally screwing up the pulse width on the injectors. So they replaced both the IACV & the ECM, my fingers crossed as I learned this on the way back from TX last weekend.
Took her out yesterday between the rain showers & ran her for 90 minutes w/o event :-)))) WOOOOOOOOOOOOHOOOOOOOOOOOOOO! I predicate this as a success as I'm preparing to relocate back to the Gulf of Mexico and need her to be back in top-form. Best news, Yamaha paid for everything as my warranties ran out exactly two years ago and this episode has been reported on only a very few cases over the years, thus they really listened to the mechanics and examined the computer data with great scrutiny and stand behind their products as this would have been a several thousand $$$$ repair.
Evan.
Fishing from the GW 330 Express DAWGONIT
If you hadn't read the previous thread, it's here: http://www.tidalfish.com/forums/boat-talk/226135-yamaha-f225-knocking-pinging-misfires.html.
So here's the deal :-( After I posted the last update, a few of us were heading out to take some happy snaps for Harry, as well as drop a few lines. On the way out of Lynnhaven, I thought I had felt a few sputters, but attributed it, again, to the incoming tidal rush. So we clear the Lesner and the no wake buoy and power up to 25 knots and settle out heading for Cape Henry~all seems good. About 6 minutes later, the RPMs fall off on the starboard motor, the same offending one as before, and it begin to shake violently and detonate/backfire. Here we go again. So it's an about-face and head back to the inlet singled-up on one motor.
In disbelief, I try it a few more times on the way in, it runs, then stumbles, then goes kaput :-( So now it's back into the hands of the mechanics & big brains @ Yamaha.
The following Monday, which was a small craft advisory all day, they take DAWGONIT into Back Bay and it takes over 90 minutes for the problem to show itself. Now they're believers and they cull all the data, call & send the info to Yamaha and the big brains come back w/ a faulity idle air control valve which was causing the ECM (computer) to overheat thus totally screwing up the pulse width on the injectors. So they replaced both the IACV & the ECM, my fingers crossed as I learned this on the way back from TX last weekend.
Took her out yesterday between the rain showers & ran her for 90 minutes w/o event :-)))) WOOOOOOOOOOOOHOOOOOOOOOOOOOO! I predicate this as a success as I'm preparing to relocate back to the Gulf of Mexico and need her to be back in top-form. Best news, Yamaha paid for everything as my warranties ran out exactly two years ago and this episode has been reported on only a very few cases over the years, thus they really listened to the mechanics and examined the computer data with great scrutiny and stand behind their products as this would have been a several thousand $$$$ repair.
Evan.
Fishing from the GW 330 Express DAWGONIT