Well.... it’s done it since new in some form or other."correct the 5000 rpm stumble that I'm experiencing along with the over rich condition".
wow, when did this appear?
The throttle “back off” happened on my way home the night I bought it.
The 5K rpm stumble that didn’t really start....or wasn’t noticeable until I’d ridden the bike for around a year.
It’s always run rich, from day 1 of ownership. Apparently this is common and all 996s did so even with the stock eprom.
There is quite a bit of documentation on the “stumble” though all that I’ve found written on it, states it occurs at 3200 rpm and no where else.
I even got in touch with Brad the Bike Boy about it and he also says it only happens at 3200 rpm.
Mine is at 5K but matches the description given. Described above I’m my last post.
That didn’t really start until maybe last year. From some the articles Brad Black wrote, it seems some owners stated it went away if they adjusted their valves to .005 rather than spec.
Based on that, I concluded that mine must have started when the fuel fouling carbon build up started to interfere with the valves seating properly.
Anyway, I’ll continue to run Techron through it until it’s fully cleaned out. Also, i should be able to lean it out now that I will be able to see what’s going on.
Yeah, no issues in “goose mode” either. Yes, at part throttle cruise. Detailed description above in my last post.Is your stumble on part throttle?
My 996 will occasionally 'cough' on partial throttle....I will have to make note of the RPM's when this happens. No issues in full "goose mode".
You should give this a read:
It's been over 3 years now but here's some graphs on a 916cc that BCM built, with the 748R intake/SPS exhaust cams, ported heads, and careful assembly. Stock 916cc. 119.6HP and a very nice torque curve. Bruce and Jay did a good job! I can't believe it's been over three years and 26k miles...
Page 3 has most of the pertinent detail. Might be a bit on page 2.
Most of that is what Brad Black discusses with me here:
Hello all! New to this forum and new to Ducati aswell. I bought mine 748SP a month ago. I got some really weird problems with my bike and I hope you can help me to find a solution to this so let me start from the beginning. Everything started with the bike acting bad when driving it, at around...