Quote:
Originally Posted by donk_316
Hi,
I have emailed Vance & Hines TWICE now in the last few months with no reply. Does anyone have a direct email addy for a tech there?
My bike pops and farts and hesistates badly when not at full operating temp. The calibration has been checked twice and the throttle calbration is dead on. Bike runs decent when hot.
The fuelpak was purchased and intalled by dealer in October but for some reason there are no "mode" settings such as the version 12 should have.
I emailed V&H in regards to the popping and farting AND the fact that my new fuelpak isnt a Vers. 12 and STILL no response.
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Assuming that your fuelpak settings are correct, I believe you may have an intake leak. Make sure that the back plate of the SE A/C is firm and secure to the intake flange. I am telling you this from experience. When I initially installed the equipment on my 2008 RK, I took the bike out for a test ride and after first starting it, it hesitated and pulsated a bit. I took it back into my garage, did a very thorough investigation of the install and realized that I could see light coming through a gap between the back of the SE A/C plate and the intake flange. I properly tightened the air cleaner fasteners and WAALAA!...like magic, she rolled like a dream.
Now...the reason your bike ran well after warming up is because your v-twin starves for less fuel when hot than when cold. By having the SE A/C not properly installed, you are allowing more air than what the system requires when cold, making the mixture lean. However, your engine (even though still lean) accepts the mixture when hot because the demand for more fuel has lowered in a hot operating condition.
This the reason why the enrichner on carborated bikes is pulled out further and longer in the winter than in the warmer seasons.
I had a carborated sportster and the plugs always had increased carbon buildup in the Summer compared to the cold season. Food for thought!!
