mortikan
XS400 New Member
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Good morning all,
I have a 77 XS 400 standard. I have had the bike for three years now. I don't have a lot of miles but the first year I owned it, it was running rough would stall at lights on occasion but it ran and I put a few hundred miles on it. Last year I decided it needed some work so I pulled the carb and cleaned it bought the rebuild kit for the stock BS34 mikunis I am running stock needles, while the carbs were off I noticed the tank was leaking. I decided to get that fixed and repainted so second year it sat dry( didn't have the cash to get it done right away) I did a little cleaning and replaced fuse block with blade fuses nothing much though. This year I get the tank back and after a little fiddling(currently the pilot jets are 31/2turns out she starts on first kick almost every time.
The issue that I am having now comes into play. while sitting or under load when you give it gas she drops off power about 3500-4000K if I keep the throttle on it will die but, if I let go she settles back into idol(I currently have it at 1200rpm). when this first happened I used carb cleaner and found one of the boots was leaking. I have replaced the boots and gaskets all new clear fuel line, checked the diaphragm in the petcock(I did have the tank red coated when I painted it), replaced the vacuum line for the petcock rebuilt the stock air filters with new filter material went through the carb again. I think it's a carb issue and I'm going to keep trying but I was hopeful someone might have an answer.
I have put new shocks new rubber and a set of mufflers from mikes xs on it and wrapped the heads and new grips that's it just for information.
I have a 77 XS 400 standard. I have had the bike for three years now. I don't have a lot of miles but the first year I owned it, it was running rough would stall at lights on occasion but it ran and I put a few hundred miles on it. Last year I decided it needed some work so I pulled the carb and cleaned it bought the rebuild kit for the stock BS34 mikunis I am running stock needles, while the carbs were off I noticed the tank was leaking. I decided to get that fixed and repainted so second year it sat dry( didn't have the cash to get it done right away) I did a little cleaning and replaced fuse block with blade fuses nothing much though. This year I get the tank back and after a little fiddling(currently the pilot jets are 31/2turns out she starts on first kick almost every time.
The issue that I am having now comes into play. while sitting or under load when you give it gas she drops off power about 3500-4000K if I keep the throttle on it will die but, if I let go she settles back into idol(I currently have it at 1200rpm). when this first happened I used carb cleaner and found one of the boots was leaking. I have replaced the boots and gaskets all new clear fuel line, checked the diaphragm in the petcock(I did have the tank red coated when I painted it), replaced the vacuum line for the petcock rebuilt the stock air filters with new filter material went through the carb again. I think it's a carb issue and I'm going to keep trying but I was hopeful someone might have an answer.
I have put new shocks new rubber and a set of mufflers from mikes xs on it and wrapped the heads and new grips that's it just for information.
