SuzukiSavage.com /cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Fuel again /cgi-bin/YaBB.pl?num=1442520815 Message started by KNOCKDOLIAN on 09/17/15 at 13:13:34

Title: Fuel again Post by KNOCKDOLIAN on 09/17/15 at 13:13:34 Hi all, Well after having so much trouble with this bike I threw it in the corner and left it FOR TWO YEARS  :-[ I have other bikes so.... Anyway, after reading all again about tuning the carb I have one question. The spacer mod. Does removing the space not lower the needle causing the mixture to weaken. I believe my bike is very rich across all ranges. I have two washers on 52.5 idle and 150 main. two turns out. HD muffler and K&N. Its my wifes bike and she wants it on the road. She wont be ragging it. The issues I had was its running rich. It would stall when rapped shutting of accelerator to stop. I think that's because tick over was set too low ? and some may remember the engine would just cut out when hard acceleration throttle full open. as soon as I shut it by about 1/4 the engine would fire up again. This sparked the debate about rev limiters ?? Will removing a washer and going down an idle jet size weaken the fuel across the range ? HELP  ;D

Title: Re: Fuel again Post by Serowbot on 09/17/15 at 13:19:47 We don't have a rev limiter... Removing the spacer will richen the mix... #52.5 may be rich on the pilot... Try a #47.5 or #50... Do you have the stock petcock?... :-?...

Title: Re: Fuel again Post by KNOCKDOLIAN on 09/17/15 at 13:47:39 4751465B43565B40340 wrote: We don't have a rev limiter... Removing the spacer will richen the mix... #52.5 may be rich on the pilot... Try a #47.5 or #50... Do you have the stock petcock?... :-?... Thanks for the reply, yes im aware no rev limiter. It was my post that started that discussion a couple of years ago. I have the raptor tap. How does less spacer make the mixture rich if it lowers the needle in the jet. Don't get me wrong Im not arguing with you I don't get it. Any other carb ive played with idle is JUST tick over and raising the needle or lowering the jet strengthens mixture. Why are these carbs so complicated ?? Cheers

Title: Re: Fuel again Post by Dave on 09/17/15 at 13:51:20 I agree with Serow.....the 52.5 pilot is most likely too rich for a bike with the stock air filter. The spacer and washer go on top of the needle clip, and there is a spring underneath that holds the needle up against the spacer/washers.  When you remove the white spacer and put the "3" washers in place of the white spacer, it makes the mixture slightly richer.  If you only have "2" washers, it may allow the needle to move up too far and make the bike run too rich. Try a #50 pilot, #150 main and 3 washers.  If you have a surging just off idle....then remove one of the washers.

Title: Re: Fuel again Post by KNOCKDOLIAN on 09/17/15 at 13:57:28 0C373A2D3C302B2D363E332C5F0 wrote: I agree with Serow.....the 52.5 pilot is most likely too rich for a bike with the stock air filter. The spacer and washer go on top of the needle clip, and there is a spring underneath that holds the needle up against the spacer/washers.  When you remove the white spacer and put the "3" washers in place of the white spacer, it makes the mixture slightly richer.  If you only have "2" washers, it may allow the needle to move up too far and make the bike run too rich. Try a #50 pilot, #150 main and 3 washers.  If you have a surging just off idle....then remove one of the washers. Ill give it a go. Back to the drawing board. Its K&N filter by the way. Just been thinking about the needle and forgot the spring. Removing washers will cause the needle to rise as its pushed up by the spring yes ??

Title: Re: Fuel again Post by Steve H on 09/17/15 at 15:02:09 Yes.  That is correct.

Title: Re: Fuel again Post by KNOCKDOLIAN on 09/18/15 at 11:17:26 Just noticed a dimple on the retainer plate. dimple down or up please ?

Title: Re: Fuel again Post by verslagen1 on 09/18/15 at 11:25:40 dimple down

Title: Re: Fuel again Post by KNOCKDOLIAN on 09/18/15 at 12:57:26 6A796E6F707D7B79722D1C0 wrote: dimple down Thanks

Title: Re: Fuel again Post by KNOCKDOLIAN on 09/20/15 at 10:03:23 So here's what I did.  After spending another weekend pulling the carb off, putting it back on again. Going through every combination with no joy I went back to stock. 130 main and 47.5 idle. I have kept the white spacer out and left two washers in. two turns out. Apart from a bit of popping. on shut down and every now and then when you shut off at high revs and pull the clutch it will stall. But I stress not every time it runs lovely and most importantly doesn't now cut out at max revs. I can only think that with UK fuel being higher octane than US it doesn't need to run as rich as you lot do over the pond ??? What do you think  :o :o

Title: Re: Fuel again Post by justin_o_guy2 on 09/20/15 at 13:57:07 I don't slide my foot off the gas pedal in the car and let it slam the throttle closed. These bikes don't appreciate that, either. If it's running well the way your wife rides, then maybe it's not perfect, but good enough. You can unstress and let her ride. Later, you can make little changes... but stuffing it in a corner over a carb hassle? Dude, you're lucky she didn't cuff you to it.

Title: Re: Fuel again Post by KNOCKDOLIAN on 09/21/15 at 11:25:26 405F595E43447545754D5F53182A0 wrote: I don't slide my foot off the gas pedal in the car and let it slam the throttle closed. These bikes don't appreciate that, either. If it's running well the way your wife rides, then maybe it's not perfect, but good enough. You can unstress and let her ride. Later, you can make little changes... but stuffing it in a corner over a carb hassle? Dude, you're lucky she didn't cuff you to it. Thanks for the concern but she has three other bikes that run fine

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