Yamaha blaster wont run right, need some tips

[Dan264]

1992 yamaha blaster bought not running for $300.00

* cleaned carb
* conpression test - low
* did new top end ,cylinder good
* wouldnt fire
* spark test - weak spark
* new cdi
* still weak spark
* new stator
* good spark
* fired up - idles - go to rev it up, bogs. Wont rev.
* brought the cArb to work and put in it ultrasonic carb cleaner for 2.5 hours
* put carb back on, still does the same.
* adjusted the timing ( turnsd stator as much to the right as i could)
* fired up, stilm does the same thing
* disasembled carb and checked eerything
* still does the same
* adjusted mixture screw - still does the same

What do i need to do or any suggestions ?

 

[Awk08]

tors delete ???
unplug it under the hood, black box near the cdi.

 

[JBRoc01blaster]

Sounds like a problem with the reeds ! Check the reed petals for cracks, chips and to make sure theyre laying flat ! I had the same problem and it turned out to be my reeds.

 

[mjgnslngr]

also, you said you cleaned the carb, did you clean the screen on the petcock as well???

 

[Blaaster]

Every rebuild needs a leak test performed, have you done one?

 

[Rashid1739]

Check the airflow! Same thing happened to me I took the top of the air box off to get more air in and cleaned the filter then it ran fine.