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Post by billbobaggins on Feb 26, 2013 20:18:11 GMT -5
Ok I installed a 50mm bbk kit and new head on my scooter with a 23mm carb and unifilter, a9 cam, new no rev cdi, and a iridium spark plug got it all together and it runs good intill about half throttle then it starts bogging can someone please help me. ( all this stuff is from scrappys)
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Post by millsc on Feb 26, 2013 20:18:45 GMT -5
What jet do you have in the carb?
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Post by millsc on Feb 26, 2013 20:50:08 GMT -5
The bigger the carb the bigger the jet you need to make it run correctly, i run a 24mm carb on my tapout scoot , only gained six mph, and it drinks way more gas. I like the six mph gain so I'm not gonna go back to a smaller carb, but not going to run a bigger carb in my roketa even if I decide to max it, ill stick with the 20mm carb. I finally got the big carb tuned in but its a hassle and probably will have to retune when it gets hot.
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Post by edfr on Feb 26, 2013 21:05:22 GMT -5
The bigger the carb the bigger the jet you need to make it run correctly, i run a 24mm carb on my tapout scoot , only gained six mph, and it drinks way more gas. I like the six mph gain so I'm not gonna go back to a smaller carb, but not going to run a bigger carb in my roketa even if I decide to max it, ill stick with the 20mm carb. I finally got the big carb tuned in but its a hassle and probably will have to retune when it gets hot. Got that a little reverse the bigger the carb the bigger jets it comes with so if you put in a bigger carb you most likely may have to go down on the jets. Lefty
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Post by billbobaggins on Feb 26, 2013 21:07:38 GMT -5
Cant remember what the pilot jet is but the main jet is 88 it is whatever they put in the 23mm carbs at scrappdogs.
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Post by millsc on Feb 26, 2013 21:10:45 GMT -5
I have to run a 107 in my big 24mm carb, and with the 20mm carb 95-98 was fine.
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Post by millsc on Feb 26, 2013 21:15:06 GMT -5
You'll get different opinions, but when i put in a bigger carb i had to use bigger jets, i say upjet to a 92-95
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Post by billbobaggins on Feb 26, 2013 21:16:42 GMT -5
So for mine what shoud I change them to?
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Post by millsc on Feb 26, 2013 21:17:23 GMT -5
Try a 95 and work down, unless it works
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Post by edfr on Feb 26, 2013 21:25:07 GMT -5
Can remember what the pilot jet is but the main jet is 88 it is whatever they put in the 23mm carbs at scrappdogs. Ok, do this to find out which condition is causing the problem RICH OR LEAN: Get up to speed WHERE it will start to BOG then BACKOFF THE THROTTLE about 1/4 of an INCH AND HOLD IT THERE. A. If the Motor Speeds up it is LEAN. B. If the MOTOR Stumbles, Hesitates but Settles down it is RICH. This trick of the trade works at any throttle position and tells you what the motor needs. This way you know exactly what you need at what throttle position. If it acts up in the mid-range then you can adjust the needle. If it acts up at wot throttle then you adjust your main jet up or down. To determine if you need a bigger or smaller pilot jet is the easiest. If you cannot get it to start good and the idle drops and dies your to FAT on the Pilot Jet. Best jet you can put in is one that your scoot runs good when it is out between 2-3 turns. Lefty
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Post by billbobaggins on Feb 26, 2013 21:26:34 GMT -5
Ok next question which I probably should of aske first I am not sure I hooked ev err ything up right had to get rid of the egr the 2 ports on the intake manifold were do they go?
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Post by edfr on Feb 26, 2013 21:31:26 GMT -5
If you got rid of all the emssion stuff then those VACUUM LINES coming from the INTAKE MANIFOLD HAVE to be plugged up otherwise you will loose Vacuum and have tons of problems.
Right now you should have a VACUUM LINE going to your PETCOCK unless you put in a SHUTOFF VALVE. If you took off all the othere emssions that should be the only VACUUM line you need, unless you have a CARB with an ACV Valve which also needs Vacuum. Lefty Lefty
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Post by millsc on Feb 26, 2013 21:37:57 GMT -5
Yeah take all that stuff off and if your manifold has two nipples put a short hose on the extra one and cork it with a bolt
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Post by billbobaggins on Feb 26, 2013 21:53:42 GMT -5
Ok I had a friend set my scooter up I dont know if he did all the hoses right herenis some pics. Ok so the top one goes to the carb obviously but the bottom one hes got going to one of the intake manifold ports is this right? Attachments:
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Post by billbobaggins on Feb 26, 2013 22:01:44 GMT -5
Ok so plug one and the other goes to the fuel petcock got that done next there are 2 hoses on the bottom of the carb one long one and one short what do I do with them? Attachments:
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Post by edfr on Feb 26, 2013 22:26:03 GMT -5
those pictures are fuzzy, but the bottom to the right is most likely your CARB DRAIN hose that just hangs down pointing to the ground.
Have to ask what kind of carb and SIZE is on there, looks like it has an ACV valve like the 250s 30mm carbs with that hose connected on the top. Lefty
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Post by millsc on Feb 26, 2013 22:44:53 GMT -5
Is this a ruckus or ruckus clone? Looks like it from the petcock, scrappys 23mm carbs don't have acv valves, but have fuel pumps that 24mm carbs do not have
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Post by edfr on Feb 26, 2013 23:08:35 GMT -5
Put up the link to the CARB on SCRAPPY because that one does not look like any on his sight. either that or take a good picture of the carb and keep the size down those pictures are to big,
I question the CARB he says he has because look at hose the attached to the carb high to the left of the second pic. Lefty
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Post by millsc on Feb 26, 2013 23:18:55 GMT -5
Hard to tell by those pics, your right
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Post by billbobaggins on Feb 26, 2013 23:19:29 GMT -5
The scooter is the ruckus clone it has the 1p39qmb motor and the carb is the 23mm cvk carb from scrappydogscooters I have one hose on the backside as a drain but what is this othe hose on the bottom it is pretty long not sure were it goes. It is kinda hard to see its the one to the left of the intake mani on the bottom of the carb it wraps all the way to the other side of the carb has a long hose on it. Attachments:
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Post by billbobaggins on Feb 26, 2013 23:22:22 GMT -5
Ok I will try I am taking pics with my tabalet no flash useing a flashlight just so you guys can see I will try and take a good pic of the carb
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Post by billbobaggins on Feb 26, 2013 23:27:22 GMT -5
Heres one Attachments:
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Post by millsc on Feb 26, 2013 23:33:25 GMT -5
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Post by edfr on Feb 26, 2013 23:36:24 GMT -5
Ok, I see now that it is a regular carb with a pump. But in the second picture I SEE A OPEN VACUUM LINE connector on the INTAKE MANIFOLD plug that up. Lefty
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Post by millsc on Feb 26, 2013 23:42:07 GMT -5
I did 20 bbk's over the summer the ruckus clone was by far the slowest, i attribute it to the stock airbox and the exhaust. All the others had open air filters and performance exhausts.
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Post by millsc on Feb 26, 2013 23:47:05 GMT -5
79 bucks for a 23mm carb seems overpriced anyways, when you can get a 24mm carb for 29 bucks 1mm is barely noticeable, extreme small difference. I don't notice any accel loss without the pump with my 24mm carb either, if anything a problem i don't have to worry about failing. If your gonna max your scoot get and have the time and skill to tune it go with the 24mm carb, 1mm and a pump that may cause trouble and not make a noticeable difference for 3x's the money seems silly to me.
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Post by billbobaggins on Feb 26, 2013 23:48:19 GMT -5
Yeh I know I took it off for the picture it was in the way but in that picture to the left of that nipple (when the picture is right side up) there is a hose that comes out from the bottom of the carb it goes to the other side of the carb it is pretty long I cant figure out were it goes.
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Post by billbobaggins on Feb 26, 2013 23:51:29 GMT -5
79 bucks for a 23mm carb seems overpriced anyways, when you can get a 24mm carb for 29 bucks 1mm is barely noticeable, extreme small difference. I don't notice any accel loss without the pump with my 24mm carb either, if anything a problem i don't have to worry about failing. If your gonna max your scoot get and have the time and skill to tune it go with the 24mm carb, 1mm and a pump that may cause trouble and not make a noticeable difference for 3x's the money seems silly to me. I know man I just got the scooter and then my income tax and went a little overboard but this is what I am stuck with now got to try and make it work to late to go back now.
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Post by millsc on Feb 26, 2013 23:56:27 GMT -5
Get rid of the airbox get a open air filter, exhaust may not be needed even though i love it,put a 92-95 jet in it, get a manifold with one nipple hook it up so you only have two hoses going to the petcock, one to the carb other to the manifold. Scrap all the epa erg mess trash it. It will run like a champ.
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Post by edfr on Feb 27, 2013 0:03:55 GMT -5
That hose that is attached to the bottom of the CARB is your FUEL DRAIN HOSE just bring it back to the LEFT side(CVT) side sand let it hang down in front of the CVT. The Screw to drain the bowl is RIGHT NEXT to where that hose attachs to on the carb. Lefty
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