powerband spikes?

[blasterman87]

ok guys, i was riding the other day and my blastys powerband is more than it should be, like if im riding and slowly giving more throttle at a certian point it will get a huge boost and have huge power but it doesnt last long, so in otherwords my power band or curve it not well rounded it hits all at once. what can i do to spread it out a bit making the power more usable?

 

[mr_3_0_5]

port it properly

 

[blasterman87]

thats what i thaught a port job would be a good fix

 

[phragle]

this was a sudden change?? like out of the blue?? you didnt change a thing??
you probably have developed an airleak.

 

[coreyownz]

ya cause it could cause it to run leaner.. right ?

 

[blasterman87]

no its done it sence my last rebuild, about 5 riding hours, i thaught maybe it was a jetting issue

 

[96blaster_200]

ya cause it could cause it to run leaner.. right ?

when you have an air leak it runs richer becuase it gets too much air.

 

[phragle]

when you have an air leak it runs richer becuase it gets too much air.

bassackwards... more fuel=rich more air=lean airleak=on crack, it will vary all over the place as an airleak is not a consitstant metered flow

 

[4cfed]

lean is fast but lean is dangerous... id check and make your you dont have aair leak.. spray carb cleaner all around the case gaskets and carb connectors and see if your idle changes

 

[phragle]

do a leak down test, carb cleaner eats sealant which holds the cases together making them aittight, spraying carb claner all over will cause more problems than it fixes.

 

[4cfed]

do a leak down test, carb cleaner eats sealant which holds the cases together making them aittight, spraying carb claner all over will cause more problems than it fixes.

my bad.. guess im still to much of acar guy.. thats how we find vacuum leaks on cars...

 

[blasterman87]

starting fluid is a better option imho, but again its not an air leak its consistant its just the powerband

 

[Jay]

starting fluid is a better option imho, but again its not an air leak its consistent its just the powerband

My blaster does the same,my bike was stock until,full fmf exhaust ,power reeds reed spacer,290 jet kit,i think it is normal.

 

[Unstock240]

Starting fluid isn't going to eat the seals overnight. If you do it often it will over a period of time. You probably just werent having that before the rebuild and your not used to it. Thats just how mine is, you slowly up the throttle to peak and all at once it really picks up power. Get a port job or a midrange pipe would help.