Hunting at 3500 rpm

[nickodemon]

Bought myself a standard fazer 1000 gen 1 and it is really good. I've been using it for a few days now and the only slight issue is it seems to be hunting slightly on a steady throttle at 3500 rpm. It's so long ago when i last rode a standard fazer i can't remember if this was a common problem or if there is a solution. The only thing i could think of was old fuel as the bike had covered less than 300 miles in 3 years? I have fitted a venom race can with the front db killer in and the rear one out.  Ps.. It seems to be slightly worse when it's cold.

[Falcon 269]

Hi Nick

Sounds like a combination of lean surge, made worse by partially blocked pilot jets. 

What year is the bike?  If it's a 2002/early 03, they suffered worst from lean surge.

Try some carb cleaner in the fuel first.   

[nickodemon]

Hi Mike, It's an '02. It isn't too bad it sounds like it's hunting but doesn't cause the bike to judder. Whats the best carb cleaner to put in fuel. I have redex injector cleaner. Could i stick some of that through the fuel system?

[Falcon 269]

No personal experience but I gather that Redline fuel cleaner (see ebay) is the stuff that works.

Try that first and then we can take it from there.

[nickodemon]

I'll order some off fleabay. I asked about injector cleaner because i thought it may be similar stuff

[unfazed]

Out of balance carbs makes it even worse

[nickodemon]

Tickover is slightly unsteady, as if they are slightly out of balance.

[nickodemon]

Put some carb cleaner through the bike and thrashed it silly.   Seems to have sorted it