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07-02-2007, 08:47 PM | #1 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
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Hello my name is mike and I have been hiding a lifan problem
(Lifan support group)
I have had a slight problem with my lifan lately that has put it out of service until today.(I feel ashamed- :oops It all started a couple of weeks ago while out riding, we were putting around the sub and my bike stalled I checked the plug, it was very hot (the plug) and dry but had a weak spark.I bled a little fuel out of the carb bleeder screw-Hmm fuel there-good-but will not start. I just pushed it home it was just a block from my house and lightly raining. A few days later with a new plug and a full fuel tank we gave it another try and it did about the same thing, run for a while then sputter and stall and not start. After sitting a while it would start so I'm thinking maybe something is heating up and shutting it down (electrical) but I still go ahead and take the carb off and look for gunk in there and there is a very little amount of goo and a few small particles so I clean it all up. We go for another ride and still the same thing, it runs great for a little while (few hundred feet to a few miles-always different distance) and sputters a bit then stalls and wont start for a few minutes (20 minutes or so) So I decide go at it today. With all the extra electrical components I have around here I start swapping out parts (coil,CDI) to see if it could be an electrical part.NOPE. So I do a backstep and start looking for the simple thing I overlooked long ago and found an odd problem. All along I have stupidily overlooked the most important clue from the spark plug. Anyone care to guess? (clue-I had almost found the problem right from the start BUT....) |
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07-02-2007, 08:56 PM | #2 |
Join Date: Jun 2007
Location: Williams Oregon
Posts: 21
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could it be the plug wire?
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07-02-2007, 08:58 PM | #3 |
my car did the same thing when the intake was leaking?
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07-02-2007, 09:04 PM | #4 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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Nope not the plug wire and I even tried my spare coil-W/wire on it to no effect.
Not an intake leak, but it was running lean |
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07-02-2007, 09:10 PM | #5 |
Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
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A rat had moved into the exhaust pipe? Kidding
I am stumped...What was it? what was it? I'm curious now.
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<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
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07-02-2007, 09:14 PM | #6 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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yeah I was stumped to and the problem will blow your mind, very simple and easy to overlook.
I almost had the first look I took if only I had let......................... |
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07-02-2007, 09:15 PM | #7 |
Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
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Was the choke stuck?
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<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
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07-02-2007, 09:18 PM | #8 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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nope not the choke it works fine and in fact the carb was perfect after cleaning out a little bit of junk but that wasnt the problem.
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07-02-2007, 09:20 PM | #9 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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So after today I had ruled out any electrical problem so that leaves FUEL.
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07-02-2007, 09:26 PM | #10 |
Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
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Alright, My last try A bad fuel line?
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<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
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07-02-2007, 09:31 PM | #11 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
Posts: 2,302
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nope fuel line is new I ditched the cheap black stuff when I did the engine swap.
Heres a big hint: the carb bleeder screw clued me into the problem.But the problem has nothing to do with the CARB itself. |
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07-02-2007, 09:35 PM | #12 |
Intake boot?
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2005 RSX-200E 2004 Suzuki Eiger 1999 Arctic Cat 250 1977 Kawasaki KH400, aka Green Ripper |
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07-02-2007, 09:37 PM | #13 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
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nope I thought about that and looked at it very close but its good.
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07-02-2007, 09:40 PM | #14 |
ok, lean, not carb......you're acting like it's something simple......vent hose??
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2005 RSX-200E 2004 Suzuki Eiger 1999 Arctic Cat 250 1977 Kawasaki KH400, aka Green Ripper |
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07-02-2007, 09:44 PM | #15 |
Join Date: Jun 2006
Location: directly under the earths sun............NOW
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So heres what we know.
The tank is full. The carb is clean and working perfect. The electrical is fine and the plug is NEW. There is good compression-I did not take a reading but it is good (new engine -apparently no damage done to it compression wise-and it has run well before this problem started) The clue to whats going on is the carb bleeder screw. |
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