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Aprilia rs/ carb gurus

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Priliars125
Two Stroke Sniffer



Joined: 24 Sep 2012
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PostPosted: 08:48 - 26 Sep 2012    Post subject: Aprilia rs/ carb gurus Reply with quote
Quick easy question for gurus Very Happy my air mixture screw on my phbh 28 mm carb for rs125 is turned out approx 5 turns ( way to much) do I require a bigger pilot jet mines 62 if I remember rightly? Or do I have a problem with carb ( been cleaned ) just to add if I screw in the mixture screw 3 turns out onwards it bogs and dies lol I'm hoping I'm right with pilot needs to be bigger Cool
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GSTEEL32
Traffic Copper



Joined: 24 Feb 2010
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PostPosted: 09:06 - 26 Sep 2012    Post subject: Re: Aprilia rs/ carb gurus Reply with quote
Priliars125 wrote:
Quick easy question for gurus Very Happy my air mixture screw on my phbh 28 mm carb for rs125 is turned out approx 5 turns ( way to much) do I require a bigger pilot jet mines 62 if I remember rightly? Or do I have a problem with carb ( been cleaned ) just to add if I screw in the mixture screw 3 turns out onwards it bogs and dies lol I'm hoping I'm right with pilot needs to be bigger Cool


62 is stock iirc. Your screw needs to be dialled all the way in, then i'd suggest 1 1/4 back out. That will be ok as a starting point.

You running a stock main jet & airbox too ?
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bodger
Nova Slayer



Joined: 18 Apr 2012
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PostPosted: 09:15 - 26 Sep 2012    Post subject: Reply with quote
Are you saying that the bike only does not idle properly, but otherwise runs cleanly through higher rev ranges ok.
If the bike only has a problem with idling and has only started acting up recently its not going to need a bigger pilot jet. It looks like you have a partially blocked pilot jet or associated airway.
If this is a old ongoing idling problem , and the carb has been cleaned ,probably best to look for airleaks around the inlet stub or check the float level.
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Priliars125
Two Stroke Sniffer



Joined: 24 Sep 2012
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PostPosted: 12:52 - 26 Sep 2012    Post subject: Reply with quote
Iv got aftermarket air filter and 126 main but it's the same with standard air box and 120 main strange lol the bikes always done it i just don't think it's right never heard of it being so far out the float level is as should be and carbs clean no blockages check for air leaks absolutely none it wouldn't bother me but I know it's not right it bogs and dies anywhere from 3 turns out turning inwards quarter turns I'm stumped I'm sure months ago someone mentioned a larger pilot but I could of dreamed that up haaaaa Surprised
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Priliars125
Two Stroke Sniffer



Joined: 24 Sep 2012
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PostPosted: 12:54 - 26 Sep 2012    Post subject: Reply with quote
Just to add bike never starts without choke either no matter the weather


Thanks
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P.addy
Red Rocket



Joined: 14 Feb 2008
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PostPosted: 12:59 - 26 Sep 2012    Post subject: Reply with quote
Priliars125 wrote:
Just to add bike never starts without choke either no matter the weather


Thanks


Mine didn't either.

How derestricted is it? What spark plug are you running, what compression does it have, when was it rebuilt last?

5 turns out on a carb is a lot... why have you swapped the stock filter for an aftermarket one..
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Priliars125
Two Stroke Sniffer



Joined: 24 Sep 2012
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PostPosted: 17:45 - 26 Sep 2012    Post subject: Reply with quote
Arrow exhaust system and pv is about as deristricted as it is buddy I'm running a br10 compression was 130 approx 800 miles ago and was rebuilt 2800 miles ago full rebuild iv had 3 rs125s before never had a problem starting or screw so far out bout max was 2 turns out lol oh well might be 1 of those things Very Happy

Cheers
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Priliars125
Two Stroke Sniffer



Joined: 24 Sep 2012
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PostPosted: 17:47 - 26 Sep 2012    Post subject: Reply with quote
Oh I swapped the standard box as tbh it has a big difference in acceleration I changed back and fook me I could feel the power on acceleration was down so I put back on haha

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