My bike started missing terribly, so I did a full time up. New ngk iridium's (properly gapped at .35), new ignition coils (coilspec) and dropped a k&n filter in it. Fired it up and it purred smoothly. Took it for a test ride and all was working fantastic. Then after I got home it died on me in the driveway due to a rough idle. Bike runs good.....just has a very rough idle and sometimes at very low rpms seems to be a bit sketchy. Any ideas????

 

What rpm does your bike idle at once warm ?

 

Around 1 to 1 1/2. I adjusted the idle up to keep it from dying. It's still not idling right tho.....its too rough.

 

Start off by going back over everything you just did. I can't count how many times I've thought I tightened or snugged something, only to find it's worked itself loose...

 

That was my first thought. Vacuum line or something I didnt put back right. I sure hate to have to tear into it again.

 

Ah, think of it as "practice" for when you have to do your valve clearance check!

 

When is a valve adjustment recomend, and how do I know when I need to do one. Buke currently has 31k on it.

 

The manual says every 16,000 but many wait until 20-30,000. At your mileage I'd be inclined to do it soon. The only symptom that I'm aware of is that it gets harder to start. Check this thread - https://cbrforum.com/forum/f4i-main-...ustment-58128/