Yamaha DT 100 problems

Rubies12 · #1 (**permalink**) 08-20-2005

I have a 1976 Yamaha DT100 enduro that I just bought recently. I cannot seem to get it started, but have confirmed that it has spark, and is getting fuel. The cylinder head is brand new and compression seems fine. All I have been able to get is a back-fire once in a while, usually while trying to roll-start. Maybe its the timing? Any ideas appreciated. Thanks

tecateboy · #2 (**permalink**) 08-21-2005

yea what it seems like is your timing is off. try advancing it a bit and if that doesnt work retard it a bit. i had that problem with my tecate when i changed motors. the timing was retarded too much so it would only backfire a couple times. but well if that doesnt work...i dont know what to tell you.

sblt500r · #3 (**permalink**) 08-21-2005

check the keyway in the flywheel.

Rubies12 · #4 (**permalink**) 08-22-2005

It turned out to be the timing, as soon as I made a little adjustment it fired right up first try. Now, however it seems to have a carburation problem or something...I can be riding along and the motor will either rev itself way up or start to die out. I checked the carb and everything seemed fine. Floats move freely, there doesn't seem to be any vaccum leaks around the hoses, slide opens and closes properly...any theories?

Frank12 · #5 (**permalink**) 03-31-2006

that sucks man, sorry

Frank12 · #6 (**permalink**) 03-31-2006

sorry man
bet your shee is crying

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