Why does MY BMW K75 not run well?
My Bike started almost first time and runs well when Cold but has a slight rumble/misfire when warm and won’t hold revs at idle… many K bikes from the forum get some form of poor running from research so I thought I’d try and capture a few quick checks and easy things to try to remedy.
Can a BMW K75 run on a second hand engine?
Well, I rebuilt the K75 with a replacement second hand Engine, now begineth the fettling to get it running 100% The feeling of pride getting an Engine to run, building a Bike or taking a set of parts and putting them into a mechanical masterpiece is second to none in my opinion.
What to do if your starter motor stops?
Sometimes one can temporarily ‘fix’ the problem by having the bike in gear and trying to move the engine counter to normal rotation direction by moving the bike backwards a small amount. It is possible for a combined problem, with the starter motor having a slightly dead spot it stopped at the last time you used it.
Where is the mating plug on a BMW K75?
That plug fits into its mating plug found on the RIGHT side of the frame not far from the computer and battery, and it has a green-yellow wire and a green-red wire. Cut the plug, join those two wires neatly, use shrink tubing over them. Keep in mind that if you bypass the switch, you eliminated a safety item.
What does black mean on a BMW K75?
Black = Running Rich, White = Running Lean, Brown = Just about right. That doesn’t get you to the solution, but it does point to a problem at that cylinder – could be fuel, could be electrical… more later, as I’m still only part way through this. The Black thing at the end of the Throttle Bodies near the Injectors.
When did I buy my first BMW K75?
My first BMW was a ’92 K75S. It was a fun bike. It was easy to work on, and work on it I did. I did a partial restoration on a bike that had sat virtually unused for two years, outside, uncovered, under a fir tree dropping needles, in close proximity to salt water. Bought it for $2000 for it and sold it for $4500.
What should I do about my BMW K75 cafe racer?
Beyond that, a long few weeks of troubleshooting a K75 Café Racer in Dubai led me to another culprit for none starting / poor running, namely the Ignition Switch Remove and dismantle the Ignition switch, check, clean and protect all parts – if suspect, just bin it and get another as they are all 20 plus years old…
My Bike started almost first time and runs well when Cold but has a slight rumble/misfire when warm and won’t hold revs at idle… many K bikes from the forum get some form of poor running from research so I thought I’d try and capture a few quick checks and easy things to try to remedy.
What kind of engine does a BMW K75 have?
The K75 featured a 750cc air-cooled horizontal three cylinder engine known as “the flying brick” due to its brick like appearance. The engine has a characteristic high pitched whine at idle known in the BMW community as the “K bike whine”.
Is the BMW K75 a good handling bike?
In the twisties this bike was nimble for its size and posture, really not a bad handling bike. The K75 is a heavy bike at around 550lbs dry, and it has a relatively high center of gravity and seat height. For me, this bike was not really conducive to jumping on and riding around town…this bike wanted to go the distance.
My first BMW was a ’92 K75S. It was a fun bike. It was easy to work on, and work on it I did. I did a partial restoration on a bike that had sat virtually unused for two years, outside, uncovered, under a fir tree dropping needles, in close proximity to salt water. Bought it for $2000 for it and sold it for $4500.
Well, I rebuilt the K75 with a replacement second hand Engine, now begineth the fettling to get it running 100% The feeling of pride getting an Engine to run, building a Bike or taking a set of parts and putting them into a mechanical masterpiece is second to none in my opinion.
Black = Running Rich, White = Running Lean, Brown = Just about right. That doesn’t get you to the solution, but it does point to a problem at that cylinder – could be fuel, could be electrical… more later, as I’m still only part way through this. The Black thing at the end of the Throttle Bodies near the Injectors.
Beyond that, a long few weeks of troubleshooting a K75 Café Racer in Dubai led me to another culprit for none starting / poor running, namely the Ignition Switch Remove and dismantle the Ignition switch, check, clean and protect all parts – if suspect, just bin it and get another as they are all 20 plus years old…
Why is my side stand not working on my BMW K?
Side-stand switch: Many a K bike owner has had problems with the sidestand switch. The switch is in the circuit for the fuel pump relay coil, and if the switch is not electrically closed, the fuel pump will not operate. Those of us with sidecar rigs simply remove the switch and join the wires.
That plug fits into its mating plug found on the RIGHT side of the frame not far from the computer and battery, and it has a green-yellow wire and a green-red wire. Cut the plug, join those two wires neatly, use shrink tubing over them. Keep in mind that if you bypass the switch, you eliminated a safety item.
How to turn off the turn signals on a BMW K?
If the rider fails to manually turn off the turn signals (called trafficators in U.K.) after a certain number of feet of travel or time, then turning off the turn signals is done by a combination function of the flasher relay & hazard circuit & the bulb monitor unit..while it has an interconnection, it is not a direct function of the BMU.
Why does the warning light keep coming on on my BMW K?
Another rather common problem is that both front and rear brake light switches must be operational, or a fault may be registered and the red light will come on, and stay on. If you do not first activate both brakes; or, if one or both switches are faulty; the warning light will not extinguish.