|
|
Post by cdanoff on Dec 27, 2011 16:01:47 GMT -5
i just started working on a 1995 yamaha jog ive had and i cant get it to start no matter how many hours i put into it, it used to be that the scooter would stall out when i would rev up but now it wont even start. i already cleaned the jets out in the carb which made no difference bc it still wont start. i also checked the fuel valve which is working and of course i checked the spark plug which is also fine. the only thing that might do it is the air box which has a split seal but still it should atleast start its not that big of a leak. i do get some sort of a response if i put my hand over the intake on the carb but it still barely starts that way. i dont know what else it might be please give me an idea.
thanks
|
|
|
|
Post by mainepeace on Dec 27, 2011 16:10:29 GMT -5
Did you check the compression? Did you check the spark, grounding to the engine? Its just air, spark, fuel, so one thing is not in the proper proportion.
Greg
|
|
|
|
Post by cdanoff on Dec 27, 2011 16:23:18 GMT -5
how do i check the compression and does it still need to be grounded if i am kick starting it?
|
|
|
|
Post by cdanoff on Dec 27, 2011 16:45:41 GMT -5
ok i actually pulled the spark plug out and kicked it while i was looking at it and there was no visual spark does this mean it is broken?
|
|
|
|
Post by 50dude on Dec 27, 2011 17:16:28 GMT -5
Was the plug touching a metal part of the bike when you kicked it?
Make sure the kickstand is up too btw.
|
|
|
|
Post by cdanoff on Dec 27, 2011 17:47:09 GMT -5
no i just did and saw a spark so its not the spark plug.. i didnt think it was before because it does work when i spray starting fluid in the carburetor but then cuts out
|
|
|
|
Post by cdanoff on Dec 27, 2011 18:09:47 GMT -5
thanks for you help so far ppl, does anybody have any other ideas, im thinking that stuff got in the engine when the airbox fell off a long time ago while i was riding it (which i just remembered) this is when the problem started so im thinking about rebuilding the engine but i have no experience so ill see how that goes tommorow.
|
|
|
|
Post by 50dude on Dec 27, 2011 19:31:36 GMT -5
Try putting the spark plug back in, and kick starting it with no starter fluid. Open the throttle as you do it.
Take the plug back out after a few kicks, if it is wet then you are getting fuel. This would suggest that the fuel is old, and it needs fresh fuel because it won't ignite the old stale stuff.
If the plug is dry, you are not getting fuel. This means that the float in the carb could be bent, meaning no fuel is getting to the carb.
Hope this helps
|
|
|
|
Post by skuttadawg on Dec 27, 2011 20:32:54 GMT -5
How many miles on it ? Do you hear or feel any blowby when kickstarting it ? You may need rings replaced as they do wear out and are very cheap . You can go to any auto-parts store with loan a tool program and hasa compression gauge . You screw it into the sparkplug hole and turn it over to get a reading . The kickstart should feel if compression has went down from when you first got .
|
|
|
|
Post by skuttadawg on Dec 27, 2011 21:01:16 GMT -5
Forgot to say check the rubber intake manifold for cracks or holes . My Honda Cr125 got dry rotted and had an instant power loss . Changed the intake and was zooming again .
Also check the 2T oil level if you have an injector . Some have a engine disabler to prevent engine damage if out of or too low on 2T oil
|
|
|
|
Post by cdanoff on Dec 28, 2011 13:50:02 GMT -5
okay i opened the engine and when i took the shroud fan off i found a significant amount of fishing line wrapped around the o ring, sound like i found the problem to u guys as well?
thanks for the advice
|
|
|
|
Post by cdanoff on Dec 28, 2011 17:05:20 GMT -5
the seal around the air box when you open it is split but it doesnt even start so i think i have more problems that just that
|
|
|
|
Post by jimbolina on Jan 7, 2012 17:41:00 GMT -5
Wait, are you saying you found fishing line INSIDE your engine? Like as in inside the combustion chamber? which O ring was the fishing line wrapped around?
|
|
