Problems after changing spark plugs

[Eternal49]

Ok starting a few days ago the kat started to feel like it had lost some power, not alot of power but enough to notice. So I decided to go ahead and change the spark plugs since the bike has 7153 miles on it.

After I installed all the plugs I had a hard time getting it started so I used the choke and started it up and let it warm up for a few seconds and turned off the choke and its idling fine but when I give it throttle it will rev up to 3k rpm and hang for a few seconds then jump way up.

I checked and made sure I installed the spark plugs correctly and that I used the right plugs. I also checked and made sure that I had the plug wires seated all the way and that I didnt get them out of order. I then checked and made sure that all the plug wires where hooked to the coils and that I didnt unhooked or unseat some of the electrical wires going to the coils.

I also checked and made sure I wasnt pintching any of the vacuum lines or fuel lines and that nothing came unhooked. I also tried starting the bike with the petcock in the primary position and in the on position with no change.

Im out of ideas????

Thanks,
-Nik

[kevin2502000]

Make sure the vacuum line on the back of the petcock is attached at both ends.

[Eternal49]

It is, I double checked.

[JayBell]

search "hanging idle", you go a vac leak someplace more likely

[96katana96]

only suggestion is to take it all out again and double check ur steps. if the bike ran ok before and bad after more then likely u might accidently missed a step. eighter that put the old plugs back in and see how it runs. hope this helps.

[Eternal49]

Double checked everything and put old plugs back in and Im still having the issue. I cant find any vacuum leaks.