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1991 Yamaha Exciter ii 570 L/C

Posted: Tue Jan 31, 2012 2:18 pm
by daylestoys
I can't find out what is wrong with my sled but it's getting way to much fuel and bogging out when you shut the fuel off it runs fine till you have no more fuel thinking some one put the wrong fuel pump.

Re: 1991 Yamaha Exciter ii 570 L/C

Posted: Tue Jan 31, 2012 6:33 pm
by Vmax540
Dirty carbs, sticking/dirty needle and seat's, misadjusted float height or saturated float's.

Re: 1991 Yamaha Exciter ii 570 L/C

Posted: Wed Feb 01, 2012 10:46 pm
by daylestoys
We tried all that and then some this is are third set of carbs and brand new conponments.

Re: 1991 Yamaha Exciter ii 570 L/C

Posted: Thu Feb 02, 2012 12:23 am
by Vmax540
daylestoys wrote:I can't find out what is wrong with my sled but it's getting way to much fuel and bogging out when you shut the fuel off it runs fine till you have no more fuel thinking some one put the wrong fuel pump.
You may be on to something, A bad fuel pump diaphram can leak fuel directly into the crankcase thru the pulse line.

Re: 1991 Yamaha Exciter ii 570 L/C

Posted: Thu Feb 09, 2012 1:28 pm
by chrisrider63
and or crank seals.....