cold blooded tw200 - Wrist Twisters
 
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post #1 of 13 Old 09-27-2013, 11:53 AM Thread Starter
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cold blooded tw200

Any help appreciated. Have a 2009 tw200 that when air temp warm starts n runs great with no choke. When air temp less than 60 degrees, wont start without choke and if do choke it catches immediately and revs for few seconds then dies. After that won't start regardless of choke / no choke / half choke. Any recommendations appreciated.

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post #2 of 13 Old 09-27-2013, 11:58 AM
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I have an '05 TW, sounds like the pilot jet may be partially blocked. How is the throttle response when it is running? Fwiw, mine almost always needs choke to start unless warm.

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post #3 of 13 Old 09-27-2013, 12:01 PM
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small air cooled motor... they are almost always going to be cold blooded.

+1 to the pilot jet, those things get clogged pretty easy. Just take the time n pull the carb off n give her a good cleaning.

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post #4 of 13 Old 09-27-2013, 12:18 PM
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Shim the needle, 2-3 turns out on the idle mixture screw and that may do it.

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post #5 of 13 Old 09-27-2013, 01:04 PM
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Quote:
Originally Posted by PAULIBIKER View Post
Shim the needle, 2-3 turns out on the idle mixture screw and that may do it.
but first start with a carb thats known to be clean and free of blockages. Even jets that dont look blocked can be ever so partially blocked and cause all sorts of issues idling etc.

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post #6 of 13 Old 09-27-2013, 01:42 PM
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Quote:
Originally Posted by nd4spdbh View Post

but first start with a carb thats known to be clean and free of blockages. Even jets that dont look blocked can be ever so partially blocked and cause all sorts of issues idling etc.
+1, mt tw had a partially clogged pilot jet when I bought it.

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post #7 of 13 Old 09-27-2013, 02:36 PM
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I've had a 2005 xt 225 since new (pretty similar to the tw, but not sure on engine and carbs) and since the day we bought it we had to drain the carbs to get it to start. Literally the day we bought it the dealer did that to get it to start, and since then, if we let it sit for more than a day or two it won't start at all, and once we drain the carb it fires up like nothing happened. It's a (small) pain, but it's worth a shot.

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post #8 of 13 Old 09-27-2013, 03:48 PM
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Quote:
Originally Posted by badmoon692008 View Post
I've had a 2005 xt 225 since new (pretty similar to the tw, but not sure on engine and carbs) and since the day we bought it we had to drain the carbs to get it to start. Literally the day we bought it the dealer did that to get it to start, and since then, if we let it sit for more than a day or two it won't start at all, and once we drain the carb it fires up like nothing happened. It's a (small) pain, but it's worth a shot.
There's no way that should be the case... Check your float height, and if your carb is anything like the TW's, back out your pilot screw.

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post #9 of 13 Old 09-27-2013, 04:16 PM
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yeah, carbs should not have to be drained to get it to start on the regular.

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post #10 of 13 Old 09-27-2013, 07:27 PM
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Agreed. Possibly bad/stuck needle/seat.

Oh, and for the OP, I agree with the suggestion to check the pilot jet.

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post #11 of 13 Old 09-27-2013, 07:37 PM
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Like I said, it been like that since new, and the dealer wasn't really willing to do anything about it. It runs fine otherwise and doesn't really bug me enough to dig into it...

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post #12 of 13 Old 09-28-2013, 05:53 AM
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Also, check out TW200forum.com , the tech help section is great and the members are always willing to help out.

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post #13 of 13 Old 09-28-2013, 05:57 AM
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Quote:
Originally Posted by mddisn View Post
Any help appreciated. Have a 2009 tw200 that when air temp warm starts n runs great with no choke. When air temp less than 60 degrees, wont start without choke and if do choke it catches immediately and revs for few seconds then dies. After that won't start regardless of choke / no choke / half choke. Any recommendations appreciated.

To add to the prior comments: You are going to need at least some choke even at temps as high as 70 on some engines even with a fully-to-spec carb. Keep in mind that choke is not a all-or-nothing thing and that you can actually apply too much, flooding out the engine.

Do check for bad/clogged jetting and passages, but don't be surprised at all if you still need choke at 60F.

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