Join Date: Mar 2019
Location: Dallas/Fort Worth
Constant fuel smell / cold bike -- solved
This is my first Kaw / fuel injected bike, so i'm wondering if our ZX12s by nature emit a noticeable raw fuel odor (mine seems strongest from RH side of the valve body area). Two weeks ago I pulled the valve body and injectors a to fix a steady drip from where the hard line attached to the valve body (old o-ring) & wet injectors where they seated in the fuel rail. Fuel was pooling up in the valley of the engine block. Installed all new o-rings for all injectors and for both lines going to the tank (at the fuel rail) and lubed the o-rings with silicone grease. Perfect, snug fit in every instance.
The bike runs fantastic. The tank is probably 3/4 full. Fast forward two weeks to today, and every evening when I get home from work and open the garage, the raw fuel smell is there. I've looked five or six times for 15m each time all over the bike and around the valve body with a strong flashlight looking for wetness. And also looked under the tank (I had the tank off a couple weeks ago, so not a stranger to the fittings or the fuel pump gasket). I simply cannot find any sign of fuel seeping out of anything or any wet/damp components.
Are the early FI bikes like this? Or do I have a problem? Any known problem areas to recheck? Thanks much! (my carbed Yammys don't smell like fuel at all - and if they did, typically a leaky petcock o-ring/easy fix). Thanks, gents!
2000 ZX12R (A1) with 14k (Candy Persimmon Red)
Last edited by 71Rcode; 05-04-2019 at 11:37 AM.