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stupid question probably,but i dont know

  • Thread starter Thread starter lakesguypaul
  • Start date Start date
L

lakesguypaul

Guest
My 81 suzuki 750 has a aftermarket shutoff after the petcock going into the carbs.the petcock on the tank is on prime,which i didn't know till i started looking why my bike was breaking up at 5-6 grand rpms.i really never take it that high but when i do that's what happens.After reading old posts i see that that is gravity feed from that setting.also there is a hose that goes from the petcock to the middle of the carbs from the petcock.from what i have read when the petcock is in the on position it runs on vacuum,is this why my bike breaks up at the higher rpms,the petcock seems stuck there in the prime position and will need to probably rebuild.bike runs pretty good now but would like it to run like it is supposed to.
 
Get a new petcock, ditch the wonky setup you have now.

In PRIme position, the petcock will flow all the time, which is why the manual shutof is installed.

Actually, the manual shutoff was probably installed because the vacuum petcock needed some attention, and rather than fix the problem, a previous owner applied a Band-Aid.

.
 
That's a good place to start...there may be more, but your petcock sounds done...
IMO...don't bother trying to rebuild it...probably won't work. Just dig deep and buy a new one...from Suzuki...
It will work, it will work correctly and it will work for the next 20 years or so...:D
 
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