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Post by billtrout on Dec 19, 2012 10:32:23 GMT -5
I was trying too fire up the scoot and it will start and run for about thirty seconds and then die. Can not give it gas iether. this has happened a few times even on a warm scooter. right now I'm thinking of replacing the carb but i can't find the exact carb PD24JD. the carb has what appears to be a vac line on the front just above the bowl.
Any Idea's?
Thanks
Bill
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Post by scootnwinn on Dec 19, 2012 10:44:19 GMT -5
Hey Bill how many miles on the bike? How many since the last valve adjustment? We can assume its a 150? Have you checked power to the enrichener? Can you put up some pics of the carb or bike?
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Post by tvnacman on Dec 19, 2012 11:09:13 GMT -5
look to see if the carb you need is in the pics at this link <div style="width:480px;text-align:right;"><embed width="480" height="360" src="http://static.pbsrc.com/flash/rss_slideshow.swf" flashvars="rssFeed=http%3A%2F%2Ffeed1214.photobucket.com%2Falbums%2Fcc483%2Ftvnacman%2Ffeed.rss" type="application/x-shockwave-flash" wmode="transparent" /><a href="http://photobucket.com/redirect/album?showShareLB=1" target="_blank"><img src="http://pic.photobucket.com/share/icons/embed/btn_geturs.gif" style="border:none;" /></a><a href="http://s1214.photobucket.com/albums/cc483/tvnacman/" target="_blank"><img src="http://pic.photobucket.com/share/icons/embed/btn_viewall.gif" style="border:none;" /></a></div>
if your willing to travel to nyc you can hold it in your hand ! I will be in Staten Island tomorrow otherwise Queens . Look through my photobucket if you have any questions just ask .
John
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Post by carasdad on Dec 19, 2012 12:46:44 GMT -5
I was trying too fire up the scoot and it will start and run for about thirty seconds and then die. Can not give it gas iether. this has happened a few times even on a warm scooter. right now I'm thinking of replacing the carb but i can't find the exact carb PD24JD. the carb has what appears to be a vac line on the front just above the bowl. Any Idea's? Thanks Bill To be honest...only twice in 30 years doing repairs...I have only replaced 2 carbs. Carbs really don't wear as they have few moving parts..such as the diaphragm and slide that do wear out. A good thorough cleaning and adjustment typically takes care of the problem. The problem is that most consider spraying carb cleaner into the intake...as..'cleaning the carb'.. it must come apart to spray out each orifice...check float valve..remove a/f screw and clean that along with the jets. Sounds to me like you have a fuel flow issue..so check the petcock to make sure it is working. If you have an emissions system many times you will have a T or Y connector in your vacuum system. When the emissions valves fail they tend to stay open...which robs your carb of the vacuum need to run and draw fuel. To diagnose this...clamp off the vac line to your emissions if you have that type of system. Then pull vac line off carb...fuel line off carb and suck on the vac line. If you then get good fuel flow...by pass the emissions with a straight nipple so you only vac from your carb to petcock... and..problem solved. NOT saying this is your issue...as with any scoot...without hands on one cannot diagnose...merely give suggestions and advice..  |
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Post by Bintelli - Jason on Dec 19, 2012 15:06:13 GMT -5
Check the quality of your fuel as well. If it's been sitting for awhile you could have stale gas which would lead to a break up on acceleration/ whenever you crack the throttle.
As mentioned above, a complete carburetor clean is rarely performed, and all too often people think they are faulty. With small engine sizes like scooters it does not take much to deter fuel flow. Ensure the idle and main jet, including emulsion tube is clear of debris and stale fuel.
How is your intake manifold? Check for vacuum leaks on the manifold and the o-ring.
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Post by jazzman on Dec 19, 2012 17:04:08 GMT -5
Nothing special about the PD24JD carb it is your run of the mill Chinese carb. If you want a new carb just PM TVANCMAN he has carbs and they are not expensive.
When was the last time the scoot ran if it was more than 6 months or so without running the carb all it really needs is a cleaning. And also check your fuel filter it may be varnished up.
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Post by billtrout on Dec 19, 2012 17:18:21 GMT -5
I was out riding two weaks ago. the scoot has not set more than two days since i got it in may of this year. It does have have all the P.A.I.R system in tact. I also cleaned the carb including bothe jets.
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Post by tvnacman on Dec 19, 2012 17:28:03 GMT -5
spray the vac hoses and intake manifold while cranking and see if you get some kind of change .
John
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Post by jazzman on Dec 19, 2012 17:36:45 GMT -5
I was out riding two weaks ago. the scoot has not set more than two days since i got it in may of this year. It does have have all the P.A.I.R system in tact. I also cleaned the carb including bothe jets. Great, but did you clean out the PILOT JET PASSAGE? Just cleaning out the JETS especially the PILOT JET is not enough. You see the OUTLET passages for the PILOT JET are right by the butterfly and they are TINEY HOLES ususally 4-5 tiny holes. It does not take much for those tiny outlets to get clogged. And with those clogged it will not IDLE and or stay running. So when you take the PILOT JET out then you need to SPRAY INTO the hole that the PILOT JET screws in and make sure SPRAY COMES OUT by the tiny holes by the butterfly. |
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Post by Deleted on Dec 19, 2012 17:43:07 GMT -5
I would be willing to bet your problem lies elsewhere and even if it doesn't you're taking an awful chance ordering up the carb without knowing for sure, chances are you'll replace that carburetor and hardly fix the problem.
It sounds to me more like something along the lines of fuel filter, fuel lines, air filter, spark plug, that is where I would start hunting, valve adjustment perhaps.
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Post by carasdad on Dec 19, 2012 19:53:32 GMT -5
I was out riding two weaks ago. the scoot has not set more than two days since i got it in may of this year. It does have have all the P.A.I.R system in tact. I also cleaned the carb including bothe jets. Aha! It does have the PAIR system...they malfunction often and cause vac problems. So now go back up and read my post above. Did you do as I mentioned with the vac line going to the PAIR system?. Also as I and many mentioned...cleaning the carb is not just a spray in the intake of it or jets...it is EVERY orifice in the carb body. Read what I wrote above and try it...trust me...I do this for a living... there is no half way of doing something and expecting results....there typically is no easy fix. I see many spend 50+ bux on a new carb..and it still won't run. Then they finally pinch off the vac line to the PAIR system or find a vacuum leak in the cheap Chinese rubber tubing.. Have you removed your fuel line and vac line from the carb...sucked on the vac line to verify the petcock is working properly and there is fuel flow as I mentioned above?..  |
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Post by billtrout on Dec 20, 2012 9:51:26 GMT -5
I pulled the carb drained it. and put it back on and cranked it. It fired up but only for a few seconds so its getting fuel. I will recheck the vac lines.
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Post by carasdad on Dec 20, 2012 11:21:49 GMT -5
I pulled the carb drained it. and put it back on and cranked it. It fired up but only for a few seconds so its getting fuel. I will recheck the vac lines. Ok..getting fuel...but is it getting enough? How was the flow when you pinched off you vac line to the PAIR system and sucked on the petcock vac line?.. Let me guess ya didn't try that... I am here to tell ya..the PAIR system shares intake manifold vacuum...and when the PAIR is even slightly faulty...the valve stays open and robs the petcock of its vacuum. Reason I know is cause I fixed 3 for that reason this summer... |
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Post by Deleted on Dec 23, 2012 12:38:32 GMT -5
I get it now, that sounds like your automatic choke sticking closed, that thing with the wires coming out of it, you can order up the new choke or take one off an old carb which... If you ever buy a new carb ALWAYS keep the old one(s), those chokes are famous for going bad and it's a lot easier if you have one sitting around.
On the other hand if you just want the problem fixed and now, then I suppose a new carb would have done it heh.
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Post by carasdad on Dec 23, 2012 17:13:56 GMT -5
I get it now, that sounds like your automatic choke sticking closed, that thing with the wires coming out of it, you can order up the new choke or take one off an old carb which... If you ever buy a new carb ALWAYS keep the old one(s), those chokes are famous for going bad and it's a lot easier if you have one sitting around. On the other hand if you just want the problem fixed and now, then I suppose a new carb would have done it heh. They still rev up with the choke stuck on...they just run slobbering rich. I hope he updates us on what he has done. Cause buying a new carb is a waste of money UNTIL he rules out all mentioned above. Then when he spends 40 or so bux on a new carb..and it still won't run do to a vacuum leak..typically due to the shared vac line to the PAIR system..well...it's not my money.. ;D |
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