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06-14-2015, 12:23 PM | #1 |
Join Date: Jun 2015
Location: Louisville Ky
Posts: 10
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lifan 110cc with little power
I have a 110cc lifan with 4 speed manual. I have cleaned and adjusted the carb but I still can't get it past 21mph. Does anyone have any ideas to what would make it run sluggish. It has a 19mm carb. Is that carb big enough?
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06-14-2015, 12:41 PM | #2 |
Join Date: Sep 2014
Posts: 1,914
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The Lifan 110s I've put in old Trail 90s would max out at about 50 mph but you don't say what kind of machine it's in. Small motorcycle, quad? Some things that come to mind are restricted exhaust, restricted air intake, brakes sticking, who knows. We need more information. The 19mm carb should be big enough.
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06-14-2015, 12:48 PM | #3 |
Join Date: Jun 2015
Location: Louisville Ky
Posts: 10
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Its on a small pit bike. The brakes are not sticking. it seems to be pushing air out of the exhaust good.
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06-14-2015, 04:39 PM | #4 |
Join Date: Sep 2014
Posts: 1,914
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Ignition timing could do it but that is usually not adjustable. Partially sheared flywheel key could do it. The cam chain being one tooth off could certainly do it.
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06-14-2015, 05:03 PM | #5 |
Join Date: Jun 2015
Location: Louisville Ky
Posts: 10
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What would be a good size jets for the carb?
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06-14-2015, 06:06 PM | #6 |
Join Date: Sep 2014
Posts: 1,914
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No idea but if the carb is original I'd stay with whatever is stock until you get it running better.
BTW have you checked to see that the throttle slide is opening all the way? |
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06-14-2015, 04:44 PM | #7 |
Join Date: Jun 2015
Location: Louisville Ky
Posts: 10
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I'll check the fly wheel and cam chain.thanks mudflap
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06-15-2015, 10:53 AM | #8 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Welcome, Trodirt!
When you say you've cleaned the carb, does that mean that you removed the main and slow jets, and ensured that they aren't partially blocked? If you get to where you want to try new parts, I'd lean towards this: http://www.ebay.com/itm/24mm-Mikuni-...9a7f92&vxp=mtr
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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06-15-2015, 10:54 AM | #9 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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BTW, it's not likely to be an actual 24mm carb; that depends on where you measure.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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06-15-2015, 11:00 AM | #10 |
Join Date: Jun 2015
Location: Louisville Ky
Posts: 10
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Yea, I took all the jets out and made sure they were clean. I was thinking about a 22mm carb. Do you think the 24mm would be better on a 110?
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06-15-2015, 11:29 AM | #11 |
Join Date: Apr 2015
Location: Sudbury ,Ontario
Posts: 855
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The larger carb is not needed on a 110 ,the pz19 carb generally runs well enough .What exhaust do you have ? Is it properly sized for the 110 or is it from a 50 or 70 cc bike?
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06-15-2015, 11:33 AM | #12 | |
Join Date: Dec 2014
Location: Deerfield Beach FL
Posts: 1,410
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Quote:
Now you have me questioning my bike. I had an original 49cc with the 19mm carb. I changed to a 125cc with a 22mm carb. I have never touched the original exhaust. Is this something I need to look into? How can I tell if I need to purchase new or modify my exhaust? / |
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06-16-2015, 01:19 AM | #13 | |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Quote:
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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06-15-2015, 12:31 PM | #14 |
Join Date: Jun 2015
Location: Louisville Ky
Posts: 10
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I picked the bike up used. The pipe that is on it is about 1 inch across and the muffler is like the ones on a go cart. I want to change out the exhaust just not sure to which size.
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06-15-2015, 11:30 AM | #15 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Again, I doubt that it's actually 24mm; probably more like 19mm. It's just a decent casting, and new jets will be easy to find.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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