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How long does a timing chain usually last? I recently went through my bike and my chain was toast. Could this be the culprit as to why my bike will start first kick cold but wont start after the motor get warm? Yes yes I know I know check your valve clearance and jetting already done that I have exhausted all possible things that could be causing this and bad timing due to stretched timing chain was the only other thing I could think of. I have a dune trip planned and am getting a little stressed out about thinking that I wont be able to figure it out.

My bike has a brand new head, head gasket, kibblewhite valves, and a full exhaust. Those are the only mods done that are engine related.

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i always change mine out at 100 hours.

i have seen some at 100 hours that were trashed, there was a noticable stretch and it kinked easily.

but, i have also seen some at 100 hrs that looked as good as new.

not sure that helped any, but a stretched chain could get you a degree or so out of time, im just not sure if that is advancing your timing or retarding it.

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Yeah if my bike is out of timing badly I would think it would not start at all cold or warm, and if it did start cold rough idle. I am totally confused when it started the first it had a very strong idle.

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a tooth out on the cam either way can make the bike really really hard to start, but itll run greeeat up top. or, itll start like butta, and run like shit on top. a stretched chain could cause ard starting. more and likely its just valves. i would throw a new chain in for cheap ins. its only like 35 bucks!

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I got one on order should be here Friday. Like I said before my valves are to spec. Any other ideas what it could be?

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either jetting, or i recently read a post about the stator............the bottom end was thought to be goin out because the stator had too much play in it, and metal dust like shaving were shortin out the electrical. if its not carb, valves, exhaust leak, etc. i would start lookin deeper. what are the carb specs?? bike runs good overall?? easy cold start, and hard hot start?? sounds like jetting to me........

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Bike runs real strong when I can get it started. I am running 170 main, 42 pilot, and 1 1/4 turns out on air fuel, those stock specs. Should I compensate for the kibblwhite valves and pipe?

I do not know if this will help but, if i roll it down a hill and pop it into gear it kinda bogs out then fires up.

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Bike runs real strong when I can get it started. I am running 170 main, 42 pilot, and 1 1/4 turns out on air fuel, those stock specs. Should I compensate for the kibblwhite valves and pipe?

I do not know if this will help but, if i roll it down a hill and pop it into gear it kinda bogs out then fires up.

I think your problem is jetting. Do you have to use the choke when starting it up cold? Also what exhaust system are you running?

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Are you using the hot start? My '03 refuses to start sometimes without the hot start; other times it will start with or without it.

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go thru ur carb ad check the hot start plunger, choke plunger, etc for excessive wear.

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