'99 ST2, '06 1000ss
I'm running pump gas but the prior owner said he was running oxygenated race gas, I can't remember the brand. The pipe color looked a nice light grey when I got it, probably from the race gas and good mix. It just seems like it's getting lighter.On the pipe color, are you running race fuel [leaded?] Cam 2, Purple and Blue will give you a light grayish to white pipe color when the mix is right.
I'm very much leaning toward the CPS failure as being the culprit here. I've got some tapered feeler gages coming in tomorrow I think so I can check the gap. I have shim stock on hand and can make my own shims to place it wherever I want within .001" so perhaps even moving the one that's there closer might do the trick.
I called DucShop today and spoke with their M197 guy at length and he agrees that it sounds like an electrical problem and like the idea of cleaning/lubing all the electrical connections and checking the CPS air gap and the CPS itself. They're out of stock of the M196 cables so I'm looking around to see what I can find.