OK, I've had this long standing problem with my FZR 1000. Since mid last summer, the bike will start to cut out like it is running out of gas while cruising on the interstate, but does this very sporadically. I might go 60 miles and then it will happen.
If I position the clear inline fuel filter so I can see it while riding, the filter will start filling with vapor as it is cutting out.
I've tried (or done for other reasons) the following since the problem occured
- cleaning the carbs out
- new air filters
- rejetted and tuned carbs
- sync'd carbs
- checked the ignition system (besides the CDI of course)
- replaced the fuel lines
- new battery
- replaced fuel filter
- replaced fuel pump with one designed for a car
I replaced the fuel pump the other day and rode today thinking it would be solved. Not a chance. The problem is even worse but now more consistant. Now it will start acting up within a couple miles (or right away) of high speed (70-85mph) cruising. Once it starts acting up, I can pull off onto low speed streets and the bike will sort itself out.
Funny thing - when I first put the pump on it would seem to flood the bike at idle. I put a pressure regulator on and it worked well. Today, I pulled over every 5 miles or so to adjust the regulator. Nothing gave. Finally I took it off and the bike idled normally. To see if the pump was even working I took the out fuel hose off and flipped the kill switch to on to get the pump to prime itself this resulted in a "splat" of fuel and then it just poured out under gravity as the pump hummmed...
I also took the bike to apex sports a few months ago to have them look at it and they didn't come up with anything useful. A waste of $70.