blaster problems put new top end i need help

[clz]

when i start her up it runs fine but after a while it starts to hesitate usually in high gear when im not in the powerband so bad i cant even hit the powerband i have to drop down a gear and get in the powerband.i noticed it was easy to kick over so i compression tested it and it was @ 70. so i rebuilt it and there was the same problem.i raised the needle clip and after a while i was crusing the motor locked up so i lowered the clip and it ran really sputtery so i put it back.the plug looks a tiny bit rich. please help me!

 

[liljatownboy]

sound like you didnt even break it in might of trashed the rings. did you put the circlips all the way in they might of popped out

 

[clz]

ya of coarse! i broke it in over a period of two weeks.it ran like this before the rebuild too

 

[liljatownboy]

you clean the air filter? and maybe need a bigger jet

 

[clz]

ya i did all that i was at a 250 now im at 260 at 5000 ft

 

[liljatownboy]

try leaning it out. my have a slight crack in the reeds to

 

[quam]

could def be the reeds.
when you rebuilt it, how much did you bore it over? and what kinda piston did you drop in there?

 

[blasterman87]

u said it locked up after the rebuild? then your rings are fried and prabably need a new piston to.... again...it acts like an airleak c aused it to run lean and thats why it locked up...

 

[blaster99]

BLASTERMAN^^ word lol

 

[Blaster#55]

70 psi is really low. Ur going 2 need 2 do a new rebuild.

 

[Blaster#55]

never mind dint see u already did. lol

 

[clz]

for the rebuild i had it bored (80 over) and put a usa vitos superstock piston. me and my dad checked the reeds they looked near perfect. the comprresion is at about 116 i checked it after the break in

 

[blasterman87]

check it now, after it locked up.. u fried it again dude if it locked up

 

[2smoker85]

check the reeds, pop the top off and see if you did any damage

 

[clz]

ya thats when i checked the compression it was the day after.

 

[blasterman87]

thats still kinda low, last time i rebuilt one ( bout a month ago) it had 135, but 116 will run, my stepdads has 100psi and will run but i think its about done.

 

[phragle]

what are the results of the leak down test and what EGT temps are you running??

 

[clz]

after the rebuilt it had 120 psi before i ran it.i will do a leakdown test when i get a chance

 

[blasterman87]

120 before you ran it? then it locked up? like ive said before, your going to need a rebuild.. again

 

[electricguitarlover21]

Yeah, if it locks up, it's gotta be rebuilt. especially because you could've thrown it into the sidewall a little bit, then your motor will really get jacked up after running it. but if it sputters then it's the air fuel mixture, and you could have an air leak, try running a tusk gasket set, i had a leak in the bottom of my jug once and it messed everything up, but i have had the best luck with a tusk gasket set and it hasn't done it since