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16 Posts
Hello DucHeads! I just bought the bike (1995 Monster 900 with Keihin 41mm FCR's) and am experiencing a surge from ¼ to ¾ throttle, as well as stumbling at low rpm’s, especially when starting out in 1st gear (have to really gas it and hoooold the clutch to make it through intersections, then it wants to buck me off intermittently if I gas it, and that holds true through all the gears).
It will not start without spraying starter fluid or gas in the intake unless it's good and warmed up. When cold, to start it I have to hold the throttle to keep it from dying for a good couple minutes until it warms up and idles on its own (with idle screw set high). It will idle fine after warm, but hesitates and sometimes dies if you whack the throttle.
Top end giddy-up is fantastic once you get past the surges, and I can cruise at 65-80 with very little trouble - it's everything else that is a major headache.
I first ran SeaFoam through the intake and fuel according to directions, then disassembled and thoroughly cleaned the carburetors when that didn't fix it, but the left pilot jet doesn’t appear to squirt any fuel in the intake (which was also the case before I cleaned them). Also did the following: fuel filter changed, battery charged, new Iridium plugs and the carb clean, but it runs the same as before (aka: rough!), so I need some help!
I’ve only done basic work on my bikes and am new to Ducati, so do I still have a plugged jet in those carbs, or do they need to be synched and/or the valves adjusted??
If it helps, my FCR settings are as follows:
Main jets: 155
Slow jets: 60
Slow fuel: ¾ turn out
Slow air: 1 ¾ turns out
Floats: 9mm
Main jet circlip: 3rd notch from top
My layman's mechanic knowledge is tapped out, and I was sure the SeaFoam/Carb Clean would have me back in business, but alas, nope.
Suggestions please!?!? Summer is here and I NEED to ride! I've read of weak coils, rectifiers, regulators, etc., but would any of those cause my trouble? Also, does the lack of pilot fuel squirting on the left side guarantee a clogged carb component?...I've torn them down twice and blasted the heck out of all needles/jets/passageways/hoses with carb spray then compressed air...?. Fuel seems to be getting through just fine and the new filter is clean. I loooove the bike, but it's teasing me to death so far! :think:
It will not start without spraying starter fluid or gas in the intake unless it's good and warmed up. When cold, to start it I have to hold the throttle to keep it from dying for a good couple minutes until it warms up and idles on its own (with idle screw set high). It will idle fine after warm, but hesitates and sometimes dies if you whack the throttle.
Top end giddy-up is fantastic once you get past the surges, and I can cruise at 65-80 with very little trouble - it's everything else that is a major headache.
I first ran SeaFoam through the intake and fuel according to directions, then disassembled and thoroughly cleaned the carburetors when that didn't fix it, but the left pilot jet doesn’t appear to squirt any fuel in the intake (which was also the case before I cleaned them). Also did the following: fuel filter changed, battery charged, new Iridium plugs and the carb clean, but it runs the same as before (aka: rough!), so I need some help!
I’ve only done basic work on my bikes and am new to Ducati, so do I still have a plugged jet in those carbs, or do they need to be synched and/or the valves adjusted??
If it helps, my FCR settings are as follows:
Main jets: 155
Slow jets: 60
Slow fuel: ¾ turn out
Slow air: 1 ¾ turns out
Floats: 9mm
Main jet circlip: 3rd notch from top
My layman's mechanic knowledge is tapped out, and I was sure the SeaFoam/Carb Clean would have me back in business, but alas, nope.
Suggestions please!?!? Summer is here and I NEED to ride! I've read of weak coils, rectifiers, regulators, etc., but would any of those cause my trouble? Also, does the lack of pilot fuel squirting on the left side guarantee a clogged carb component?...I've torn them down twice and blasted the heck out of all needles/jets/passageways/hoses with carb spray then compressed air...?. Fuel seems to be getting through just fine and the new filter is clean. I loooove the bike, but it's teasing me to death so far! :think: