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Post by anthonysinacola on Nov 12, 2012 23:10:52 GMT -5
i recently bought this scooter used. It's a 2008 baccio dlx 50, it has a technigas exhaust and a bbk. I drove the scooter the first day after I brought it home, and I melted the spark plug. I since, replaced the plug for an ngk. and the scooter still doesn't seem to be running right, I fear that the engine is not getting enough fuel from the carb. I'm unsure of the jet, or what size mm carb it is. Is there a performance carb I can buy that will fix my fuel problem? I believe it was running too hot from lack of spark and melted the plug. I'm not against spending the money for a larger carb, but I'm unsure what size i should use for my setup, or where I can purchase said carb. Would a larger carb be jetted? These may sound like stupid questions but I really wanna get on the road with this bad boy... Any experts have an opinion on this? Attachments:
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Post by prodigit on Nov 12, 2012 23:12:17 GMT -5
Any experts have an opinion on this? Nice bike! |
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Post by jazzman on Nov 12, 2012 23:19:07 GMT -5
You do not need a bigger carb just need to UP-JET your current carb, and you better do it quick otherwise you will be buying a new motor or tearing it apart for a new crank and or defiintely a piston at least. So find out what carb is on there and find out what the jet sizes are in there and get bigger jets.
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Post by teddy554 on Nov 12, 2012 23:38:03 GMT -5
you stock carb will work if you up jet but if you want a aftermarket carb i can give you links, i gave link to youtube video on carb that explain everything you need to know about a carb, but do you have the stock air box on or a open air filter that makes a big difference on what size jet you need we know you have a pipe and bbk that puts you in the 85-88 range with a stock air box and 90-95 with a open airfilter her is link to the stock carb jets 25 pic down jet for a stock carb get a couple sizes up and down and 16 pic down stock airbox www.scrappydogscooters.com/50CC_2-STROKE_PARTS.html |
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Post by anthonysinacola on Nov 13, 2012 0:01:25 GMT -5
Where can I find the parts to upjet the carb? Is it just a simple adjustment? I would like to switch to and open air filter so I midaswell jet it for that, Ill purchase one before i ride.
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Post by anthonysinacola on Nov 13, 2012 0:03:42 GMT -5
and obviously if I tear the carb down Ill need to find a rebuild kit too right?
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Post by teddy554 on Nov 13, 2012 0:12:20 GMT -5
no i tear my stock carb down all the time they have a rubber gasket that seem never to have any issues, my arreche 21mm has a paper one and i have no issues with that either if you go open air filter it makes a lot of more noise and i really myself like the stock air box
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Post by teddy554 on Nov 13, 2012 0:15:27 GMT -5
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Post by anthonysinacola on Nov 13, 2012 8:04:30 GMT -5
So I should pick up a #90 main jet for my carb if I keep the stock airbox?
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Post by teddy554 on Nov 13, 2012 10:39:22 GMT -5
i like the stock box better cause it isnt as loud and it saves fuel less air less fuel, you need buy a couple of different jets 80, 85, 90, 95 every scooter is different i would start with 85 for stock box and 95 for a open air filter this should get you right but id not you can go up or down in size to fine tune scoot if need be, but remember it is better to be rich then lean
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wildun
Big Dawg
Just Scootin!
Posts: 28
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Post by wildun on Nov 13, 2012 19:17:39 GMT -5
I'm runnin a 72 cc kit with stock air box. Right now using an 85 jet and all is well. I just added a performance pipe so I may upjet to a 90 to get the extra umphhh.. 1999 beamer.
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Post by anthonysinacola on Nov 13, 2012 20:25:13 GMT -5
Currently I'm not riding the scooter. but once I replaced the spark plug I took it for a drive. And if I held the throttle steady even for a very short time it would start to bog down and when I accelerated it kinda sputtered. So I really do believe its something to do with it not getting enough fuel.
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Post by anthonysinacola on Nov 17, 2012 15:40:49 GMT -5
I 'm wondering, If I add a open air filter is there a proper way of protecting the filter from getting water in there? Is there a closed box air filter that is more performance based? I know that there is always the possibility of hydrolock, but I wouldn't mind upgrading.
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Post by teddy554 on Nov 17, 2012 15:50:03 GMT -5
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Post by anthonysinacola on Nov 18, 2012 17:54:10 GMT -5
alright so after rejetting the carb, which already had an 85 jet in it. I replaced it with a 90...The scooter idled and seemed to run well. But letting go from WOT it died. and then once I tried to restart it, It idled like sh!t, and bogged down with any throttle and now wont start  The new spark plug is starting to melt just like the last one, and it seems like the casing of the big bore kit is almost turning like a purple color. So I am starting to think that the kit was done improperly so I'm going to tear it down. Is there really a way to improperly install this kit so that It would run so hot? |
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Post by jazzman on Nov 18, 2012 18:04:18 GMT -5
WOW!! if the caseing is turning purple that sucker is hotter than a pan cake. Yes do not run it like that anymore that is EXTREME heat being created. Are you sure it is getting enough OIL I noticed this is in the 2stroke section so I would mix the oil with the gas to be on the safe side and make sure it is being lubricated enough. The oil injection may not be working right and or not dripping enough oil into the carb to mix with the gas.
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Post by anthonysinacola on Nov 18, 2012 18:10:38 GMT -5
well there is plenty of 2 stroke synthetic in the oil tank because I filled it up. Is there a way of checking to see if its getting oil through the system? Now it won't even start, so Im not sure if its burnt up or not.
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Post by anthonysinacola on Nov 18, 2012 18:15:40 GMT -5
I have very little to no experience with 2 strokes, and im kinda wishing I picked up a 4 stroke... So if I sound like a noob it's because I am. I have alot of questions.
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Post by jazzman on Nov 18, 2012 18:16:04 GMT -5
Doesn't matter if the tank is full of oil, what if the dripper is clogged and no drops of oil is being fed. The oil injection system works by vacuum so it is hard to check. Some have an adjustment screw to feed it more oil so you have to look at your carb where the oil hose goes in and see if there is an oil ratio screw. But with your BBK I would mix oil with my gas and would not trust the oil injection system. As you can see your problem is most likely just that it is not being lubricated and or not enough.
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Post by anthonysinacola on Nov 18, 2012 21:21:57 GMT -5
can I eliminate the oil system and just pre mix? what mixture should I run?
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Post by jazzman on Nov 18, 2012 21:37:34 GMT -5
You can pre-mix a lot of folks do 40:1 ratio and find that is works good. You have to see smoke out of the tailpipe if you don't you do not have enough oil. As far as eliminating the Oil system just leave it on or unhook it from the carb and plug the inlet up.
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Post by teddy554 on Nov 18, 2012 21:40:01 GMT -5
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Post by teddy554 on Nov 18, 2012 21:44:02 GMT -5
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Post by anthonysinacola on Nov 18, 2012 22:23:00 GMT -5
I have read your links and they helped me to upjet my carb to the 90. Although it already had an 85, which I have kept. After I start the scooter up and let it warm up, I see smoke coming out of the exhaust when I pull the throttle, and I can see a very slight amount of smoke pluming out as I ride. When I removed the line coming from the oil pump to my carb, I didn't have any oil leak out, Is that a sign that possibly my line is clogged? Should there have been oil sitting in the line?
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Post by teddy554 on Nov 18, 2012 22:47:05 GMT -5
no your line is not clogged imo you are just out of tune you might need to move up to a 95 main and raise the clip on the need to help richen(more gas) the mixture for the dieing after letting throttle go also some things to check squish clearance not enough to much compression causing it to knock or predationation 49ccscoot.proboards.com/index.cgi?board=yamajog&action=display&thread=2355 |
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Post by teddy554 on Nov 18, 2012 22:51:36 GMT -5
just a pipe on a 2t requires a 10% increase in jet size around a 85 main add a bbk and you are in the 90-100 range which air filter elevation and humidity all factor in the right size of the main it is always better to be more rich then lean,
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Post by anthonysinacola on Nov 18, 2012 23:19:02 GMT -5
So I need to raise the clip on the needle because the needle controls the low end fuel mixture, so when I let off the throttle the needle isnt allowing enough fuel through the carb causing the motor to die out. And the main jet is for 3/4 to wot so I should upgrade that as well?
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Post by teddy554 on Nov 18, 2012 23:24:26 GMT -5
i would go to a 95 and try needle adjustment but to be melting plug like that, it more then being lean what plug are you use try a cooler plug also, i think you should check your squish clearnce also
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Post by anthonysinacola on Nov 18, 2012 23:29:56 GMT -5
Ok so a 95 jet and raise the needle. I am currently running a bz7hs ngk plug. I tried to find a b8hsa plug which is what you said you were using but advance auto parts said there were no matching spark plugs.
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Post by anthonysinacola on Nov 18, 2012 23:42:10 GMT -5
What I'm finding in 8's is a br8hs.
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The new spark plug is starting to melt just like the last one, and it seems like the casing of the big bore kit is almost turning like a purple color. So I am starting to think that the kit was done improperly so I'm going to tear it down. Is there really a way to improperly install this kit so that It would run so hot?