z400 tune up?

[sandypants]

i have a 05 z400. i have it piped, jetted, and no airbox lid, no other mods that i know. when i first got it everything sounded great, now i seems like it runs rough. when it just idles it does have recommended fluid levels for everything. should i have it tuned up or valves checked? thanks

[yamahammer01]

sounds like valve trouble to me, i would have them checked just to make sure.

[sandypants]

thats what i was thinking but im far from a mechanic!! thanks this site is the best

[2fun]

Did you ever pull the sparkplug and check it?

[sandypants]

no i have a brand new one too i need to just change it!

[sandypants]

the old spark plug was toast! all black.

[sandypants]

i changed it and it still sounds rough so i will do valves next i just hope its not piston or something!! how hard is it to put cam in it while its cracked for valves?

[yamahammer01]

it shouldnt be hard to put a cam in her while shes apart, thats what i would do. gonna go with the hot cam?

[sandypants]

yep! why not anything else would be just silly!! not sure what else i can do to mod it out! i dont really want to steo up piston or anything.

[2fun]

Any updates??

Get the valves adjusted yet??
Did it help??

[sandypants]

not yet i have been busy! going to glamis in a month so i gotta get it done before that! i have not even been able to ride and it been 80 here in arizona for a few weeks

[codie]

whare do you live. i live in maine and my friend drove his 300ex with no airbox cover and moistur got in to the valves and screwed it over and that ran really bad. it ended up the valve was getting stuck every other rotation and would not let gas in .

[sandypants]

i live in arizona dont think its the moisture.