05-23-2010, 08:09 AM #1
SUV 1200 Runs "rough" at Full Throttle
I have a 2002 Yamaha SUV 1200 and it runs great until I open it up all the way and about 30 seconds to 1 minute it starts to run rough. It will continue to run rough at slower speeds
If I let it idle for a minute or two and give it gas it seems to be ok but if I go full throttle it will do it again.
Seems fine if I don't run it wide open. I normally don't ride it wide open but it still shouldn't do this.
I tried switching to reserve and it still does it. Also put in new plugs.
I recently had the carbs rebuilt.
06-06-2010, 05:56 PM #2
Since this happened I changed the fuel filter.
I was running for about 20 minutes varying speed (even ran full throttle for a while and it seemed to run ok).
Then it starting running like crap and the low fuel light came on. I went to the marina and put in 3 gallons to get me home.
After that it just didn't seem to run right. It would be ok for awhile then run like crap again.
06-07-2010, 05:10 AM #3
- Join Date
- Jul 2008
- cape cod
did the person that did the carbs know what they where doing?, if you had crap in the fuel tank it's possible it plugged the fuel filters/screens in the carbs, you may have to clean them out, it happened to me, all three screens where clogged
06-13-2010, 08:18 PM #4
- Join Date
- Jul 2007
- Baytown, TX
Mabye I'm paranoid, but every time that's happened to me it was almost always cylinder damage.
pull the head ASAP
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