Question about 2004 BMW R 1100 S

1 Answer

COLD MORNING The bike is a r 1100 s . The ONLY time I have problems with the bike running is on mornings when the temp is below 65F. After letting it sit running (anywhere between 2 minutes to 15 minutes), I start out ok and then either the bike dies at a stop and won't restart unless the bike is in neutral, kick stand up and clutch in, or it starts loosing power as I ride down the road. If it looses it when I am moving, it will sometimes go from 4-5k RPM down to zero, then back up and down causing the bike to buck. This will usually go on for the first 3-4 miles of the trip, and then will work fine. I have had it happen the whole 7 miles into work though. For the initial start and warm-up, I have used the choke to start and then turned the choke off and let it idle (per the dealer's instructions), I have left the choke on so the RPM's stay between 2-3k (done for various amounts of time up to 10 minutes). I have tried riding with the choke partially on hoping to prevent it from dying at stops. Now for the kicker. I can let the bike sit from Friday after work to Sunday afternoon, and if it is warm out, it starts right up and is ready to ride with no more than a minute or two of warming up. I suspect I just need to take it to the dealer and leave it with him overnight, but I wanted to get opinions from others on the site before I do so. What might be causing the problems, and any ideas on solutions? I've had carberated cars many times before, and some were a little temperamental on cold mornings, but nothing like this

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,712 Answers

No doubt this bike is running very lean at idle. Thats the way the EPA wants it. Im a harley mechanic and i used to work in a US dealer. all carb bikes at set up time had the carbs "readjusted". We drilled out the EPA plug and turned the idle air screw out and drilled out the pilot jet too. The bikes worked much better. we were at sea level too so the bikes were very lean from the factory. I can imagine that after the new legislation that came into force they are even leaner and require a full warm up to run properly. Warmed up means you put your hand on the motors head and its hot enought to have to jerk it away. this could take more than a couple minutes. and yes our "readjustment" was illegal. i advice you to do the same.

Posted on Nov 20, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Fzr 600 wont start


What is the condition and age of the battery? I would start with charging it and checking for holding the charge first if unsure. Then check for other suspects like starter relay/solenoid or starter itself.

Nov 21, 2013 | Motorcycles

1 Answer

I have a 1999 Nomad when I am riding down the road and my temp light will comes on and the bike wants to stall out, I let up on th ethrottle and teh light goes off, also when I hit a bump the same thing...


Symptoms of a bike running VERY lean. You should never have to ride with the choke on AT ALL.And running a bike lean,causes iit to overheat,and overheat FAST! Has the exhaust or air filter/box been modified? This is classic symptoms of an extremely lean running bike,and my solution would be to buy a jet kit,take the carbs off and clean them,install the correct larger jets,and synch the carbs. You dont wanna ride this bike like that,or you risk burning a piston.

Sep 27, 2012 | kawasaki Motorcycles

1 Answer

My 06 Road king runs really rough in the mornings. Backfires and has very little power.In the evening it runs great. Just had a new fuel pump installed yesterday. Told that was the problem. Evidently not....


Usually the air temp is cooler in the morning and more humid. I don't know virtually anything about the electronic fuel system in the bikes these days but I'd suspect one of the sensors connected to the fuel system. Your bike does not know what time of day it is. It may have a temp sensor on it though.

Jun 23, 2010 | 2006 Harley Davidson FLHR Road king

1 Answer

Seems like the battery doesn't have enough charge. I try to start using the choke and the lights dim and it start to roll over but nothing goes. It was started just this morning. It is cold out so I am...


clean terminals charge battery if it goes dead battery is probably toast .put volt meter on terminals while running should read 14.7 volts if not probably dirty magneto seek professional help

May 12, 2010 | 2001 Honda VT 1100 C Shadow Spirit

1 Answer

We have a 1986 honda shadow 1100, it cuts out when sitting in traffic, warm weather seems to effect this as it doesnt do it as much when its cold, we have just had the jets changed as the wrong ones were...


I would check charging system for proper performance, a bad volt reg. could cause increase in engine temp. does cooling fan come on and go off like it should.

Mar 27, 2010 | 2002 Honda VT 600 CD Shadow

2 Answers

Bike has a lag when its cold like its something in the motor is in a bid. after 10 miles or so it frees up and runs like its supposed to


What weight oil are you running in your bike? Years ago when we ran the straight 60 weight oil, on a cold morning you had a time kick starting the bike. Another thing is that when your bike is cold, it requires a much richer mixture to run. Whether your bike is fuel injected or carburated, you're running a very rich mixture. The fuel system control or the enricher provides the rich mixture and a rich mixture will make the bike run sluggishly.

Oct 04, 2009 | 2004 Harley Davidson FXST - FXSTI Softail...

1 Answer

Once I start the bike in the morning, everything is normal, after about 10 to fifteen minutes of riding, after the bike has normal temp. It runs only with 3 cyl. RPM tachom. is gone as well . After 30 min....


Sounds like a ignition switchbox problem. Try to find a spare and run to see if problem persists.
Can also be a burned ignition coil. Check sparks at plugs to see witch coil can be defective when hot...

Aug 22, 2009 | 1982 Honda VF 750 S

1 Answer

Starting The Bike On A Cold Morning


Try putting in new, stock spark plugs. Check and possibly replace the air filter. Charge the battery. Get the bike running then check the battery voltage at 2000 rpm. It should show 14volts or more. If not, get the charging system checked. Get a can of starting spray (for future problems).

Get the compression checked. Your bike is 21 years old and I will bet that the valves are needing to be reseated. Check the valve clearances with a cold engine and reset valve clearances as needed. Check the area where the head contacts th cylinder. Any mist of an oil stain? Tighten the head or replace the head gasket. If replacing the gasket, now is the time to have the shop lap re-seat the valves. Have them sync and balance the carbs as well. Your bike will now have its' manners back and show you the dedication it should.

May 29, 2009 | 1988 Yamaha FZR 250

Not finding what you are looking for?
2004 BMW R 1100 S Logo

266 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4477 Answers

yadayada
yadayada

Level 3 Expert

60960 Answers

phil cuzins
phil cuzins

Level 2 Expert

79 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...