20 Most Recent 1992 BMW K 75 S Questions & Answers


Hi, Anonymous and the usual suspects are:
1. A severely drained battery.
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. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
K75 backfire BMW com
couple of K75 questions idle backfiring etc
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

1992 BMW K 75 S | Answered on Dec 30, 2015


Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
http://forums.bmwmoa.org/showthread.php?70087-Brake-unable-to-pressurize-or-bleed-95-K75
Bleeding ABS Brakes BMW K75 K100 K1 K1100
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

1992 BMW K 75 S | Answered on Dec 30, 2015


Hi, S_eltringham I am sorry you can't find the first and best tool you ever bought for your BMW but despair not for a mere $0 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
Brake Pads BMW motorcycle replacing
BMW K1200LT Rear Brake Pad Replacement DIY
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
K75 Rider Manual English PDF Useful to K100 owners as well BMW K75 K100 K1...

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e



1992 BMW K 75 S | Answered on Dec 22, 2015


Hi Paul,
Try checking the steering rod mounting bushes,the triple tree bearings and front wheel bearings!
Hope this helps!

1992 BMW K 75 S | Answered on Oct 24, 2009


I would check the brake pads first to see if they are worn badly, spent a lot time once learning that will cause ABS lights to flash!
Grounding the middle pin on the ABS diagnostic plug , turn on the ignition and mash both brakes to see if the bulb checker light goes out! Very important, left out of procedure on IBMWR, if the red bulb checker light doesn't go out you have a blown tail light or stop light bulb and the ABS won't reset!
Or you have a bad bulb checker module underneath the seat. If the red light goes out then the ABS lights should go to flashing then push the ABS reset button and hold for slow count of 10 or so. Release and try it. Hope this helps!

1992 BMW K 75 S | Answered on Oct 16, 2009


I will premise this by saying I have not taken a hiatus from riding for any longer than 18 months. So 30 years ~ WOW! My recollections after not riding for a while and getting ready for that first ride afterwards, are that balance and protection from injury in case of an accident were at the forefront of my thoughts. Well, the BMW K75s is a very well-balanced bike. Having owned one for ten years, I will never not own at least one K bike, likely not the 100 either. The handling of the bike is far superior to other bikes I have ridden, albeit only rice burners and Harleys. The K75sis a sporty looking machine, but also has great touring characteristics (who said you get only one or the other??). I would easily ride fully loaded from KC to Dallas (about 7.5 hours) stopping for little more than fuel and a strech. I guess I am a pretty big fan of the BMWs, and the K75S in particular.

1992 BMW K 75 S | Answered on Nov 20, 2008


Hi, Motapujari popping on deceleration is usually caused by an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and the correct torque applied to the exhaust clamps where present. Coughing is usually caused by an air leak in the intake system and will generally have the same telltale signs of location by a wet or damp buildup of oil/gas seepage at the intake manifold to cylinder head or carburetor connection and in rare instances a worn throttle plate shaft and or seals. Spitting is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw set to lean. For more information about your issue, please visit the websites below, and for specific information or questions. Good luck and have a nice day. K1100LT
Early BMW Series
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

BMW K 75 S... | Answered on Dec 30, 2015


Hi, Chris and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, 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.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue, please visit the websites below. Good luck and have a nice day. K75 won Start
Damn bike won start BMW K75 K100 K1 K1100
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

BMW K 75 S... | Answered on Dec 30, 2015


Hi, Elvirino I am sorry you can't find the first and best tool you ever bought for your BMW but despair not for a mere $0 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
BMW K75 replacing the sparkplugs
BMW Service K75 K100 Pre Buy Inspection
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
K75 Rider Manual English PDF Useful to K100 owners as well BMW K75 K100 K1...

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e



BMW K 75 S... | Answered on Dec 22, 2015


Hi, Tonyhickey52 if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
1. If your battery was 3 years or older when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or better, any readings in the 11 volt range you need to do a proper load test on the battery and replace as necessary, any readings in the 10 volt range you have a dead cell and replace the battery.
4. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
5. Remove your air cleaner and clean and re-oil per Mfg. specifications.
6. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
7. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
8. Replace spark plug with a new one and check for spark.
For more information about your issue please visit the websites below. Good luck and have a nice day.
BMW K75S fuel pump removal
BMW K75s restoration fuel tank clean and repair part 3 Fuel filter...
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
K75 Rider Manual English PDF Useful to K100 owners as well BMW K75 K100 K1...

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e



BMW K 75 S... | Answered on Dec 22, 2015


Hi, Simeon I am sorry you can't find the first and best tool you ever bought for your BMW but despair not for a mere $0 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
My turn signals are acting weird includes flasher relay pinout BMW K75...
http://forums.bmwmoa.org/showthread.php?52842-K75-Turn-Signal-Issue
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
K75 Rider Manual English PDF Useful to K100 owners as well BMW K75 K100 K1...

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

BMW K 75 S... | Answered on Dec 22, 2015


With everything undone use a rubber or plastic mallet to slide the forks out

BMW K 75 S... | Answered on Feb 21, 2015


The gear moves out to engage and back when it starts, SO the starter may be shot or the gear needs cleaned and lubed

BMW K 75 S... | Answered on Dec 24, 2013


... as in you turn the key on and the starter starts running? I would look in two areas..

First, find and check the start solenoid. I think it may be stuck in the 'closed' position. This could be due to one of two reasons: 1 - it is physically stuck, closing the contacts in this electrically operated switch - 2 - there is a short in a wire that keeps the solenoid charged all the time. When you press the start button, the solenoid (an electric magnet switch) is charged, pulling a plunger into a position where the battery is connected to the starter. When you release the start button, the electric magnet is turned off and the plunger (with the help of a spring) is suppose to open the contact turning off the starter.

The other reason is mechanical. The starter gear may not be releasing from flywheel for some reason, probably a lever or weak or broken spring. I am not a BMW expert, but those are the things I would be looking for in your case.
Good luck with your project and thanks for your interest in FixYa.com

BMW K 75 S... | Answered on Feb 26, 2013


you could try not engaging full choke and letting it warm up for longer or look at carb ballanceing?

BMW K 75 S... | Answered on Feb 25, 2012


search salvage yards online or european bikes mags--------archway in st louis may have one-------aftermarkets mite not work rite---germans made ur scooter--also see if u can repair it-buy a haynes or clymer manual for the bike

BMW K 75 S... | Answered on Jul 29, 2011


I would recommend a leak down test to distinguish if the low compression was due to ring wear or an issue with the valves/seats...cylinders bores dont just wear out from sitting.
It's very possible that the valve seals were worn allowing crankcase oil to seep into the combustion chambers, thus causeing it to smoke. Being a 3 cylinder water cooled engine it should not have an overheating issue to cause the rings to stick...unless it was neglected, and not regularly serviced, debris in the oil filter, low oil pressure.. sludge from worn out oil. A good clean air cleaner is important...bad filtration will cause premature engine wear. Install a K & N high flow filter... and your good for the life of the bike.
Hope this answers your question...good luck with your bike.

BMW K 75 S... | Answered on Dec 18, 2010


try e-bay there are lots of manules on there for the k75 there all the same bike even the k75rt's will do you or if your good with computers go to www.maxbmwmotorcycles.com that should help as well,,,ps,,there should be no parts left over????

BMW K 75 S... | Answered on Dec 01, 2010


probly not gitten spark cause ign is worn--may not be gitten proper fuel intake also--bike is old so du a compression test

BMW K 75 S... | Answered on Oct 06, 2010


ok get some wd40 or switch cleaner and give the handel bar switches a good socking give the cut out switch a good going over this switch is most likle to be the one playing you up,,dont try to strip the switch down its full of tiny little bits that will go PING!!! and you will loos them then?

BMW K 75 S... | Answered on Jul 30, 2010

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