1991 ducati 907ie won't start. fuel pump cycling for long time,bike won't fire, new temp sensor fitted, new plugs,battery,clean tank,fresh fuel,switch on cycles long time, plugs dry when removed, good spark! this is fuel injected not carbs. any thoughts, fuel pump maybe ??? thanks DAVE.
SOURCE: 1986 Suzuki GS 450 won't start
Take the carburetors apart and either rebuild them or clean them thoroughly.
SOURCE: I have a 2004 Husqvarna SMR450 always been very
you have too much fuel going into to cylinder if backfiring on carb there are 2 screws one for idle and one for mixture the mixture screw is the one you want turn this in 1/2 off turns or more if doesnt help this picture will help buddy
SOURCE: ducati 900 ss fuel injection
I have to have you start at the basics first on this one. Check the spark plugs, the plug wires, and most importantly, the timing belt tension. Check all connections going to the crank sensor, and also check the rectifier connections and the coil pack connections as well as the spark boxes. Also, when was the last valve adjustment/belt replacement? Usualy the injected Duc's don't ever pick up missfire conditions. The Carburated versions are sometimes known for it, but usualy it's the result of the carbs out of synchronization. I would be willing to say this is a tune up issue rather than a broken part issue. If it were a broken part, you'd be experiencing the issue almost all the time, not just at high rpm's and high load. Check the tune up, let me know if anything looks out of the ordinary in there.
SOURCE: My 2005 Ducati Multistrada is hard to start in cold weather
That is not the fuel pump you hear, the pump is vacuum and the noise you hear is the ignition coming to life. Don't use any additives in your fuel, bad news, and just use the choke only, twisting the throttle does nothing till the engine starts. The choke is a slow speed jet. There is no way to check the air filter without pulling the seat and lifting the tank. But I have never found mine dirty, and I live on a dirt road. I call it the multistrada. 02 ,S4. Are you burning high test? 92 octane? How about keeping it warm or under cover? I think the fuel problem might be the dampness, humidity, etc, How about them spark plugs? Check them lately? I switched to autolites, they work a lot better than the champions. Hope this helps.
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