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a pretty weird problem..please help

By JASON 86yz80, 29 November, 2006
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i have a 1986 yamaha yz80 it dosent want to kick start so i pulled it behind a friends truck with it in second gear
and after a minute it starts to run. okay now after it has fired up due to pull starting by the truck i can shut it off and when i kick start it fires right up no problem BUT if it sits for a while it will not kick start for anything.

Banshee-killer…

18 years 6 months ago

carb...

your carb. might need some adjustments done to it..older bikes like that have problems with the carb.. after a few cold night..so ckeck that

Banshee-killer…

18 years 6 months ago

carb...

your carb. might need some adjustments done to it..older bikes like that have problems with the carb.. after a few cold night..so ckeck that

JASON 86yz80

18 years 6 months ago

In reply to carb... by Banshee-killer…

maybee spark?

once it fires up it runs great and it also starts on the first kick, but if it sits for a couple hours theres nothing...i dont know is somthing get energized from the pull starting that makes it easy to start and then goes away?

yz_kid

18 years 5 months ago

In reply to maybee spark? by JASON 86yz80

points

the points might need to be cleaned use a file or the coil might be screwed its easy to track down electrical problems if you have a volt tester just make your way down the ignition system untill you have spark then you know where the problem is

tigmaster

18 years 5 months ago

In reply to points by yz_kid

im pretty sure points were al

im pretty sure points were already gone by then. this sounds not like an electrical problem. once the bike is warm would not affect how electronics perform. it def is sumthin else. and when yur troubleshooting a bike that wont start what are the 2 things u check gas and electric. so its not electric so check gas related things. also a 1986 yz80.... when was the last time u went for a rebuild. even thought it sounds like the opposite prob of compression i would still check it out

yz_kid

18 years 5 months ago

In reply to im pretty sure points were al by tigmaster

ya

the rings in my '83 yz 125 went last year and i could bomb start it in 1st gear. check the reed valves. it could also be a improperly adjusted choke

yz_kid

18 years 5 months ago

In reply to ya by yz_kid

if you can bomb start it in 2

if you can bomb start it in 2nd gear behind a truck with out the back wheel lockijng up id say it is low compression due to worn out piston and rings

JASON 86yz80

18 years 5 months ago

In reply to if you can bomb start it in 2 by yz_kid

thanks

thanks i will take youre advice and look into all those things.

mxdave

18 years 5 months ago

In reply to thanks by JASON 86yz80

Has it been lyin up for ages.

Has it been lyin up for ages. If so i would be givin it a extra bit of mix cause it would need it after all its oldskool xD

derekschultz

18 years 5 months ago

thats not a wierd problem ...

thats not a wierd problem ... pop starting is much easier than kicking... just sounds like you need a carb service.

derekschultz

18 years 5 months ago

thats not a wierd problem ...

thats not a wierd problem ... pop starting is much easier than kicking... just sounds like you need a carb service.

derekschultz

18 years 5 months ago

thats not a wierd problem ...

thats not a wierd problem ... pop starting is much easier than kicking... just sounds like you need a carb service.

derekschultz

18 years 5 months ago

thats not a wierd problem ...

thats not a wierd problem ... pop starting is much easier than kicking... just sounds like you need a carb service.

dylanmx

18 years 5 months ago

In reply to thats not a wierd problem ... by derekschultz

man personally, first thing i

man personally, first thing i would do is change the spark plug..... try it

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