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Post by magnaman on Jul 29, 2009 19:10:35 GMT -5
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Post by shalomdawg on Jul 29, 2009 21:55:15 GMT -5
wow
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Post by neuro on Aug 8, 2009 22:16:31 GMT -5
yeah, i changed the fuel filter on my Lance Phoenix right away, and replaced all the cheap fuel and vacuum lines as well. upgraded the hose clamps, which were also flimsy. haven't had one bit of problem since June 2008 when I bought it, and that was 2200 miles ago.
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Post by backroads on Aug 12, 2009 11:01:54 GMT -5
Thanks
I haven't gotten around to checking mine out. If it is not better than that one I will be replacing it asap.
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Post by owenbrau on Aug 12, 2009 19:23:51 GMT -5
And that is why one of the very first things you should do on a chinese scoot is replace the fuel lines and filter. yuck! The things are cheap, do it even if it all looks fine. Cheap insurance.
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ianb
Junior Dawg
Posts: 5
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Post by ianb on Aug 18, 2009 12:13:15 GMT -5
which after market fuel filters are suggested?
thanks
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Post by lutherheggs on Aug 23, 2009 7:43:41 GMT -5
Good advice Magnaman! I found out the hard way this spring. My 2008 Jonway started leaking fuel under the left rear side panel. By the time I caught it, it had leaked on the backside of the panel and made the plastic bubble and look like crap. I found a fuel filter at Home Depot for a Kawasaki mower that works great! Now I gotta figure out how to repair my body panel. Luckily it's at the bottom and not very noticable.
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Post by G-Bo on Sept 4, 2009 14:43:35 GMT -5
out of curiosity, how often should a fuel filter be changed?
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Post by backroads on Sept 5, 2009 11:29:19 GMT -5
I checked mine out (Rocketa Dalco XP-150) and the lines are regular "rubber" fuel lines and the plastic filter looks like the replacement filters I see for sale at auto parts and motorcycle parts stores.
There is no leakage and it looks like replacing anything would not upgrade or improve anything, so I am going to wait until it is time to replace it. (my manual says inspect every 1000 km/621 mi and replace if needed)
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Post by Chi Makwa on Sept 5, 2009 23:00:02 GMT -5
I read somewhere in these forums that in 2008 the US govt began requiring manufacturers to use decent quality fuel lines in order to be imported. How do I know if my fuel lines are the good kind or the cheap-o kind? Mine is a 2008 model year so I don't know if it was imported before or after the new regulation.
I brought my scoot to a mechanic to help me out with the pdi. I asked him to replace the fuel filter right away because I was following Big Guy's (?) pdi instructions. He looked at me kinda funny and said "ok, if that's what you want."
Would it be obvious to a mechanic on sight if the fuel lines are the bad kind?
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Post by petedeltona on Sept 24, 2009 6:19:47 GMT -5
does anyone have pictures of location and removal of fuel filter on mc 54 250b [257] i think i know where it is but want to be sure before i start pulling plastic off. thanks.
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Post by djd on Nov 15, 2009 4:37:59 GMT -5
To magnaman,
What awesome pics! I'll never find a manual this good. This is an extraordinary testiment to how cheaply made the chinese scooters are. I think they are making these fuel filters for 25 cents each. Or less.
To neuro, good thinking! You are definitely "ahead of the curve" here. To lutheheggs, great lesson for all of us to learn from. To Chi makwa, no it would not be obvious to a regular mechanic to replace cheap parts. Why? Because they don't use super cheap parts on cars. Car manufacturers know if they start using super cheap parts the reliability of their cars would be awful and word would spread and kill their sales.
I once posted a list of flaws I foung in a chinese scooter and was accused of "chinese scooter bashing". But I never coverd substandard hoses, vacuum and fuel, substandard fuel filters, substand fuel pumps which causes stalling, defective fuel gauges caused by improper installation at the factory, and many other problems hardly ever seen or never seen on the name brand scooters.
My friend has a chinese 250cc scooter that and it won't start due to no spark at the spark plug. We are tying to troubleshoot it ourselves and its not something we wish to do. We think we have a defective part but don't know which one it is. To have a brand new scooter unable to run this (4 months) fast is amazing. It may take us weeks to fix it. If we can't he will take it to a scooter mechanic.
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Post by richardhill on Oct 12, 2010 12:54:56 GMT -5
I always have vacuum fuel pump problems, and have bypassed it to allow gravity feed. I replaced the fuel pump put on new hose on both fuel and vacuum hoses but the outlet line would never send enough fuel to the filter. Now my filter is always full and the scooter rung great. With the height of the fuel tank above the carburetor I can't see the need for a fuel pump.
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Post by D-cat on Oct 12, 2010 13:49:20 GMT -5
About 99% of Chinese scooters do not have a fuel pump (the ones with the fuel tank under the seat). The few that do are because of the location of the tank. Most scooters only have a vacuum operated petcock (on/off valve) which some people mistake for a pump. It is not entirely uncommon for these things to go bad in one of two ways; either failing to hold open (vacuum leak) or leaking fuel into the vacuum line (fuel leak). On the typical gravity feed, if you decide to remove the vacuum petcock, you should replace with a manual one. At bare minimum, it makes changing the fuel filter and cleaning the carb much easier and safer, though it should be turned to off every time you park your scooter anyway to avoid the possibility of a carb float malfunction or bad line leaking fuel everywhere.
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Post by earthman on Nov 25, 2010 5:30:00 GMT -5
HEY D-CAT hope your burning the midnight oil.
does anyone know about 3/4 hose not holding a vacuum even when tied down good with ties.
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Post by D-cat on Nov 25, 2010 10:33:40 GMT -5
3/4, like inch? Even the EGR line isn't that big. The vacuum and fuel hoses are 1/4" (6mm). If you really are using 3/4 you will never seal off that slack. I can only assume that's a typo... If 1/4 proving too large, you can try 3/16 plastic line (not rubber... plastic will stretch to a tight seal, but rubber if it starts a lengthwise tear becomes useless).
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Post by earthman on Nov 25, 2010 17:56:59 GMT -5
HEY-D-CAT
ERRATA
I meant 1/4 in. fuel line is said to cause air leaks do you agree
also I just put in a fuel filter, it is about half air filled, bike runs fine but after putting on fuel Gage went dead! got a idea
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Post by D-cat on Nov 26, 2010 16:56:06 GMT -5
This is not unusual, but if it's bothering you, you can hold the fuel filter in upside down vertical position for about 30 seconds while running. It should flush out the air bubble, but there are ways it can still return from the carb or tank. If you're not leaking fuel, don't worry about it.
The fuel gage is a different problem, should be in its own help thread.
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