Hi all,
Have a question for you. I just picked up an 08 Fat Bob. With only about 6k miles the bike rides like new but has one problem I want to work on. When it's cold it starts fine but if it's hot it doesn't. (I'm talking about hot as in I've been riding it for 20 min plus, not ambient air temp.) It will start but if I don't open the throttle a bit it will crank 6-8 times before catching.
If it's hot and I open the throttle a quarter turn or a little less it fires right up, so I'm thinking my cranking fuel is just set too low? I've been playing with my TTS Mastertune and these are the values for cranking fuel:
Temp C mS
-16 65.0
0 50.4
20 35.6
32 24.8
48 19.5
64 16.1
80 15.1
96 14.1
112 13.6
128 13.3
144 13.1
160 13.1
(Note: These are original to the bike. I haven't changed them and the hard starting predated any tuning I did.)
So I'm thinking I need to tweak these but am looking for feedback on how much. I thought I might start by increasing the lower ones by .5 and the 80-160 temps by 1.
For those who have worked with this does that sound about right?
Thanks,
Ben
Have a question for you. I just picked up an 08 Fat Bob. With only about 6k miles the bike rides like new but has one problem I want to work on. When it's cold it starts fine but if it's hot it doesn't. (I'm talking about hot as in I've been riding it for 20 min plus, not ambient air temp.) It will start but if I don't open the throttle a bit it will crank 6-8 times before catching.
If it's hot and I open the throttle a quarter turn or a little less it fires right up, so I'm thinking my cranking fuel is just set too low? I've been playing with my TTS Mastertune and these are the values for cranking fuel:
Temp C mS
-16 65.0
0 50.4
20 35.6
32 24.8
48 19.5
64 16.1
80 15.1
96 14.1
112 13.6
128 13.3
144 13.1
160 13.1
(Note: These are original to the bike. I haven't changed them and the hard starting predated any tuning I did.)
So I'm thinking I need to tweak these but am looking for feedback on how much. I thought I might start by increasing the lower ones by .5 and the 80-160 temps by 1.
For those who have worked with this does that sound about right?
Thanks,
Ben