1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

carb problem

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Old 07-22-07, 08:55 PM
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carb problem

damn just rebuilt my nikki and i think it is getting to much fuel ciase it cuts out tell you get the rpms way up and get going. I belive it might be the float hang, dont remeber setting just want opinion
Old 07-22-07, 11:37 PM
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there is always a question if the old floats are still good in a rebuild. I didnt change mine as there was never a problem with the fuel level beforehand and setting the parameters for new floats during rebuild is tricky (at least for me ). after carb reinstall I checked fuel levels at both front and rear sight glasses with a light and a mirror and the levels were good.
So I recommend checking the levels and tell us what you find.

Your problem could be other issues, like a vacuum leak in a hose or worse an air leak in your rebuild as an example.

How does the fuel filter look? is there excessive water or any rust in the system
a bad ignition may cause the same symtoms too.

Please list details before and after that will give more clues
Old 07-22-07, 11:51 PM
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New needle and seats frequently stick and cause flooding. Check the fuel levels in your sight windows. If you can't see a line at the 1/2 way mark on the windows, then the bowl/s are most likely full. Take the top of the carb off and work the floats/needle and seats up and down many times, then add a couple of drops of machine oil, I use sewing machine lube, inside the needle and seats.

When they stick, a sharp rap on the top of the fuel feed banjo bolts often loosens them. Did you make any adjustments on the float levels? I also suggest you read Sterling's carb write ups in the FAQs. Lot's of good info and helpful tips if you haven't read through those yet.
Old 07-23-07, 07:32 PM
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thanks ill look at that but it just got a bad oil leak and i think i should just park it and fix everything so ill get it all and ill check out the glasses should it be running when i do
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