I have a 2004 Yamaha blaster I brought from someone I opened the engine and noticed the piston was broken changed the piston also put a new stator she has spark but she still doesn't start please help 
Blaster won't start
- Thread starter 2strokeMar
- Start date
Have you done a leakdown test after assembly?
Fresh bore job for new piston?
How did you clean all of the piston schrapnel out of crank case?
Fresh bore job for new piston?
How did you clean all of the piston schrapnel out of crank case?
This is all new to me but I'm not to Sure what a leak down test is ! But she has compression I've cleaned everything out with break cleaner its spot less I know it's not the carb she's clean
I wish not to burst your bubble, but washing the cases out with brake cleaner is just not good enough.
The cases need to be split and the bearings either fully cleaned or replaced.
Or it will come back to bite you!
The cases need to be split and the bearings either fully cleaned or replaced.
Or it will come back to bite you!
how to do a leakdown test
we need more information ....did you just put a new piston in that torn up cylinder?
we need more information ....did you just put a new piston in that torn up cylinder?
if it was with one of those cheap ebay kits I guess you didn't know they are total junk ...http://www.google.com/url?sa=t&rct=...DmtX9f0G5zZm6bY5iyRErQ&bvm=bv.112064104,d.cWw
also as mentioned above you need to split the cases and clean out all of the shrapnel from the previous piston and check the bearings to see if the fragments didn't tear them apart
also as mentioned above you need to split the cases and clean out all of the shrapnel from the previous piston and check the bearings to see if the fragments didn't tear them apart
If you changed the piston, did you also hone the bore.I have a 2004 Yamaha blaster I brought from someone I opened the engine and noticed the piston was broken changed the piston also put a new stator she has spark but she still doesn't start please help
Slipping a new piston into a bore of unknown size, may not give enough compression to start the engine.
After any rebuild the compression will be low until the rings fully bed to the cylinder.
What is the compression reading as you said that you have compression?
a 30 dollar stator wont start the blaster.
needs a oem stator
check the tors system also
check compression/buy a comp gauge or rent one.
and if you did not completly take out the pilot jet in float bowl and clean it
then do that also.
needs a oem stator
check the tors system also
check compression/buy a comp gauge or rent one.
and if you did not completly take out the pilot jet in float bowl and clean it
then do that also.
I got her started today
glad she fired up,good job
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