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06-22-2014, 05:44 PM | #1 |
Join Date: Jan 2011
Location: Chilliwack, B.C., Canada eh
Posts: 1,393
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new ride (I hope)
So I picked up a 1998 Polaris 250 2 stroke Trail Boss the other day (made a stop at W&G's house on the way home) ....get it home and put cables to it and it fires up and runs for about 30 seconds and dies.
today I emptied out the tank of old fuel changed the spark plug cleaned the carb very well added new mixed gas to the tank and nothing not even a burp and I did what I was supposed to to clean and check everything. only thing I can get off internet is that the rings may be seized or it needs a bore and new piston and rings :( any ideas guys?
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06-22-2014, 08:30 PM | #2 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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When you say "nothing not even a burp," does that mean that it won't even try to turn over now, or it won't fire?
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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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06-22-2014, 09:17 PM | #3 | |
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Location: Chilliwack, B.C., Canada eh
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Quote:
Upon reflection I do recall that any of the Chinese ones I have worked on had a big blue spark and this one does not so tomorrow I am going to go grab a new ngk racing wire and replace that next....one thing at a time
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I could be wrong......it has been known to happen<div><br /></div><div>core directive 172: No member of the core shall report for duty wearing a ginger toupee</div> |
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06-24-2014, 10:34 AM | #4 | |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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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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06-24-2014, 10:44 AM | #5 |
Join Date: Jan 2011
Location: Chilliwack, B.C., Canada eh
Posts: 1,393
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does not produce a fat blue spark
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I could be wrong......it has been known to happen<div><br /></div><div>core directive 172: No member of the core shall report for duty wearing a ginger toupee</div> |
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06-23-2014, 12:03 AM | #6 |
Join Date: Mar 2009
Location: Southeastern Washington desert
Posts: 14,761
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Congratulations on your new machine! If the worst thing you need to do is a piston rings, on a two-stroke machine like that, it should be quite cheap and fairly easy. I have heard many good things about that ATV, and I have seen a number for sale. Enjoy!
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06-23-2014, 07:14 PM | #7 |
Join Date: Jan 2011
Location: Chilliwack, B.C., Canada eh
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Weld : I know this is a stupid question but .....do you have a compression tester.
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06-24-2014, 10:35 AM | #8 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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Yes, but I might not have the specific adapter that is the same size as your plug. I can make an adapter out of your old plug, with a little time.
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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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06-24-2014, 02:49 AM | #9 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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So you have spark.... what about the carb... you said it run for 30 secs then
stoped... maybe it used the fuel in the float bowl... carb not getting fuel.. Reed valve... maybe the crank seals if it's been sitting... ( Added new MIXED gas to the tank !!!!!! ) But the main question thats on my mined is... "Has the oil pump been removed?" If not....Why are putting pre-mixed fuel in a oil injected motor ?.. Could be to oily and not sparking.... .
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06-24-2014, 09:31 AM | #10 | |
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Location: Chilliwack, B.C., Canada eh
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Quote:
do not think that these had reeds from what I have read about them. the oil pump has been disconnected hence me draining out old mixed fuel and putting in new mixed fuel.
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I could be wrong......it has been known to happen<div><br /></div><div>core directive 172: No member of the core shall report for duty wearing a ginger toupee</div> |
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06-24-2014, 11:25 AM | #11 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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That's certainly not piston ring related. You could have stuck rings that are limiting compression, but the spark is something else. Do you have a test light? If so, you could check at the two primary wires of the coil to see if the coil is receiving power. If it is not, move backwards towards the stator. If it is, move forwards towards the coil, coil wire or boot.
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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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06-24-2014, 11:35 AM | #12 |
Join Date: Jan 2011
Location: Chilliwack, B.C., Canada eh
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I do have a test light but the coil is under the fuel tank in these ones so have to take the tank off to do the tests and might as well throw a new NGK racing wire in there wile I have it all apart. but will do as you have instructed weld.
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I could be wrong......it has been known to happen<div><br /></div><div>core directive 172: No member of the core shall report for duty wearing a ginger toupee</div> |
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07-03-2014, 07:59 PM | #13 |
Join Date: Jan 2011
Location: Chilliwack, B.C., Canada eh
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ok so replaced the plug wire and definitely have a better spark...damn near had it fire today but now it is spitting fuel into the air box. removed the air box and had it almost start and then back fire a flame out the carb lol
letting battery charge over night and try again tomorrow
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I could be wrong......it has been known to happen<div><br /></div><div>core directive 172: No member of the core shall report for duty wearing a ginger toupee</div> |
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07-04-2014, 01:41 AM | #14 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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FYI, it would be a miracle for most two strokes to fire with no air cleaner installed.
I know you said you cleaned the carb well, but you're welcome to borrow my ultrasonic cleaner if you like.
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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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07-04-2014, 01:47 AM | #15 | |
Join Date: May 2014
Location: Vancouver Island BC
Posts: 264
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Quote:
Covered the intake with 1 finger started and ran great |
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