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Post by geh3333 on Jan 15, 2015 21:03:57 GMT -5
Just my opinion , no disrespect .
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Post by geh3333 on Jan 15, 2015 21:18:45 GMT -5
Hey , buddy a quick way to rule out the cracks is to use some vinyl tape around the tube . very quick and easy. I taped the heck out of mine when I had a stock scoot . I taped mine because I didn't want to suck in any dirt into the carb,lol. The cracks had no affect on the way my scoot idled that's another reason I'm not expecting that to be his problem ,but I agree its always good to rule it out .
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Post by geh3333 on Jan 15, 2015 21:51:17 GMT -5
I went back and took a goog look at the pics again and noticed that they do not really show any noticeable oped cracks " at least in the pic ", there very well may be . I also went back and read the posts . I think some misunderstood rcq went he said I won't affect the air fuel ratio. Of course if u have an air filter or carack letting in extra air u may need to adjust the air fuel . what he and I were saying was since its before the carb it can be controlled just like having a less restrictive filter. If it were after the carb your going to be loosing suction through the carb ",completely bipassing the carb" and is harder to control. And with the cracks seemingly not that bad and there being not much flexing to open and close those cracks ",especially at idle " there should be no real change in the way it idles after tuning it in . I should elaborate on why its harder to control a vacuum leak before the carb. I'm going to use a straw to explain the situation . let's say u have a 5 inch straw and a 1 inch straw . the 5 inch straw has the carb and a restricted filter, and the 1 inch is completely open . u have both straws in ur mouth , the harder you suck on the straws the more and more suction u will lose through the vacuum leak and the leaner the mix will become . so by bypassing the carb you are of course taking vacuum away from the carb and at the same time your still pulling in extra air. If you take the open straw out and put that leak at the other end of the carB u will still pull in extra air however the vacuum will be higher since u r actually pulling the extra air through the carb and not bypassing it. So the air fuel ratio will not fluctuate like it would if u had a vacuum leak before the carb. |
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Post by alleyoop on Jan 15, 2015 22:03:12 GMT -5
Just remember people, it is a LEAN condition, a Lean condition is not enough fuel or to much air being allowed in. So ask yourself where can extra air be coming from other than through the Air Filter. If all is nice and sealed and air is ONLY coming from the Air Filter then your carb is lean. This is not rocket science but some sure make it out to be, actually nothing on a scoot is rocket science. The whole thing is knowing each of the systems on a scoot the Electrics, Fuel Delivery, Motor and Drive Train and knowing what parts make up a system and how each part within a system works and what it is supposed to do. itistheride.boards.net/thread/1637/bouncing-rpms-idleAlleyoop |
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Post by geh3333 on Jan 16, 2015 0:13:46 GMT -5
I def believe its in the carb , or in one of the vacuum lines or a mixture of both. Everyone remember there is something other then a LEAN condition going on here . just because its lean doesn't mean your scoot will have an idle which fluctuates. There is a problem within the carb !!!. Alley is right this is not rocket science , I've had to remind others of that before . even if u have no idea what you are doing we can walk you through it . however some think its not possible to do so.  |
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Post by murkyapricot on Mar 1, 2015 21:24:09 GMT -5
Alright so kind of a late update but:
Turns out the small hose seen in the bottom left of the last pic was completely broken, so I replaced that but haven't really seen much improvement.
But while looking around ive noticed that the majority of the hoses are deteriorating so I guess the best plan of action would be to replace them all.
So that brings me to my question, there seems to be a few diff diameters for sale, is there a generic size that all 150cc gy6 are or do I need to take one out at measure it? Id like to order them asap so any input is appreciated.
Also I'm looking at the clearish hoses that parts for scooters sells, they seem to be better quality than the cheap rubber ones i currently have
Edit: the idle problem seems to be a little worse, just while on the stand it goes from 1k rpm, sometimes cutting out, to jumping up close to 4k and the wheel spinning, if I grab the rear brake the rpm drop back down, I plan on cleaning the carb but figure might as well get the new tubes as well
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Post by JerryScript on Mar 2, 2015 1:25:19 GMT -5
Definitely replace all those hoses, your have the classic symptoms of an air or vacuum leak. No standard diameter for the hoses, you'll probably need two different sizes. I wouldn't order online, just take a couple of pieces to the local auto parts store or hardware store, then should have it in stock, all vehicles need these lines.
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Post by geh3333 on Mar 2, 2015 18:07:16 GMT -5
Yep , I believe its going to be carb or a hose leak or both .
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Post by murkyapricot on Mar 3, 2015 19:19:45 GMT -5
Just picked up vinyl hose from Home Depot is this an acceptable material
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..BAD TO THE BONE..
