Question about 2006 BMW R 1200 GS

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My 2006 bmw r1200gs runs lumpy at low revs I've done the valves and tried to sync the carbs but seems to be no difference it's only like this riding slow through the town over on motor way she's ok

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  • BMW Master
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Hi, Andrew and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a proper LOAD test if necessary.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking check for spark leakage in the dark
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Dirty air filter.
10. Intake air leak.
11. Water, dirt, or rust in the fuel system.
12. Carburetor damaged, contaminated, sticky float, plugged jets.
13. Multiple carburetors out of sync.
14. Fuel filter clogged.
15. Old or contaminated fuel.
16. Fuel tank vent system plugged or carb vent line closed off.
17. Gas cap diaphragm valve faulty.
18. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
19. Carburetor controls misadjusted.
20. Incorrect valve timing.
21. Valve springs floating, weak, or broken.
22. Damaged intake or exhaust valve.
23. Incompatible performance parts.
24. Control module may be in "LIMP" mode
25. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
2005 R1200GS running rough
http://www.fireblades.org/forums/honda-fireblade/100669-running-rough-low-revs.html
BMW R1200GS SERVICE REPAIR MANUAL DOWNLOAD Download Manuals Technical $10 cheap
BMW Parts Microfiche
BMW 1200 GS Rider Manual

Posted on Apr 22, 2017

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Posted on Jan 02, 2017

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