Poor throttle response

[whiteh2o]

Didn't find anything during a search. I have purchased an '04 BCR with 5,400 miles. Remus full system, stock air filter near the battery. The bike runs well overall. However, leaving in first gear requires a bit of rpm to avoid the big stumbling. So, other than some tune up gear and so on are there any procedures and equipment recommend ? Thank you

[RIQUE]

What I would do is look at the spark plugs. And check the coils are firing and then firing correctly.

[ckcarr]

Or, lower your expectations.
If the bike is tuned sufficiently, your initial impression is not atypical. The r1100s is not a drag racer, it's a high speed sport-touring motorcycle, and it takes a little getting used to the first gear lift off. What were you riding before?

[twodear]

+1.

The first BMW I rode was a standard model 1150 GS just after they were introduced. I'm not sure how the ratios compare to the 1100S but I would think first gear at least would be lower on the GS. I never did get used to it and continually stalled on take off. I bought my current GS Adventure only after I found out that first gear ratio had been changed on the Adventure model to be a bit lower than even the standard GS, and it was/is still fairly prone to stall on take off.

I am betting that you'll adapt and it won't be an issue anymore.

[brentw1]

if it is a new to you bike you should do a tune up just so you know where you are starting from.

[Chris Canning]

New plugs fresh fuel and balancing the injectors is critical and I found they go out of sync very quickly oh !!! and lots of miles 5,400 miles you have my commiserations mine started to running something like at 10,000.

[whiteh2o]

Thanks for the replies. I found the plugs and filter and will look into fuel metering and spark. As for expectations, I do believe there is room for improvement.
Ckcarr, I currently have an RC 51, 748s, and a track duty 600rr. I think I skimmed past a post on synchronization somewhere. Thanks again for the response.

[JonyRR]

everything you need to know to tune out the lean spot off-idle (and that IS what's wrong) has been covered here, it's in the archives: look for..
'0=0" tbs adjustment
'lean misfire'
tps initial voltage value .380V
change the fuel filter. really.
look closely, and I mean closely, at the fuel lines. alcohol-laced fuel kills older hose, even fi rated HOSE that's not up to spec for the new fuel...
MAKE SURE ALL THE NORMAL TUNEUP ITEMS ARE ADDRESSED.

[whiteh2o]

Thank you sir

[twodear]

Good pick up on the hose condtion Jony - we don't have alcohol laced fuels here (or if there is, they're either not telling us or it is only available in a limited number of places.)

[JGard]

The 0=0 may be overkill for something with so few miles.

Here are the things that helped my bike, which had about 20k miles at the time, run much more smoothly.

1. New plugs & wires
2. Clean air filter
3. Adjust valves
4. Balance throttle-bodies...and be super anal about this, it took me a while to get it perfect (like a year and 10k miles). Don't be afraid to use the brass screws and adjust all the throttle and sync cables as well as the throttle stop-plates
5. Clean up the electrical connectors. This was the biggie. I did all the previous things and the bike still didn't feel quite right. So I went around finding every electrical connector I could find, starting with the one off the hall-effect sensor, disconnected them, sprayed quick-drying electrical cleaner in there, and then applied some dielectric grease. This made it feel like an entirely new bike.

Anyway, all in all, basic maintenance should really help here. Electrics and throttle bodies seem to be the most troublesome items when it comes to how the engine runs, in my experience (which is limited on this bike compared to many on here, I admit)

[JonyRR]

hehehehe...
Here we go again..it feels like 2003 (except for me, I feel waaay older now).

I've clued to a tried-and-true methodology for tuning around a flaw all the 1100-series bikes have, some more, some less.
Even chipping these things is problematic as the bosch mo(t)ronic box is very sophisticated and will, repeat will, adjust your, mine and everone else's fueling to hit stoich under most conditions.
Having said that, the issue here is too lean off-idle with small throttle openings. A clutch-out stall and being a potential hood ornament are the result.
The unit is still 10 years old and needs attention to run safely..especially if it has a pipe and nothing else, it's gonna be lean off the bottom.
0=0 is another part of the tuning matrix.
Everything is important and necessary, IMHO.
Next up, pulling the CCP and disconnecting the 02 sensor to access the fallback fueling map..it's just rich enough everywhere like that to benefit a piped bike.

[JonyRR]

and yes, ensuring all connectors are up to snuff is super important. add a few more grounds while you're at it..

[whiteh2o]

We'll then, looks like this is a very hands on machine. I must say that I was surprised to find that the plugs on the bottom of the cylinders differed so from their counterparts.

[brentw1]

smaller diameter just so much room in a 4 valve head.
once these are set up correctly they are pretty stable.
most have never been properly set up.