Ticking sound at 2500 RPM

[waldo877]

So my 2001 FZ1 has 22k miles. Hasnt had valves adjusted.

All of a sudden yesterday, I noticed a tick. Now it happens at 2500 fairly loudy, and mostly upon engine deceleration. I noticed the carb boots are worn and dry cracked, but I dont think that would cause this tick? It def. sounds more like a rubbery thwomp twomp than a tick tick tick. I believe I can hear my lifters seperately from this noise.

So: Any clues? I listened pretty intently and it sounds like its right where the carbs are. I can even feel it it I hold my hand at the top of the carbs. Now could it be sucking in air through the boots?

 

[BroHay]

Check the EXUP cables for proper adjustment

 

[waldo877]

Just noticed the bike doesn't do this when cold. Also, is there a link to a how-to on the EXUP? I was thinking maybe the oil is too thin. Running 5w40 syn.

 

[NJFZ1]

Just noticed the bike doesn't do this when cold. Also, is there a link to a how-to on the EXUP? I was thinking maybe the oil is too thin. Running 5w40 syn.

Here you go:

http://www.cartestsoftware.com/fz1/exupmaintenance.html

As for the oil, I'm not sure that it would cause the issue, but easy enough to rule out. Just use thicker oil at the next oil change.