20 Most Recent 1983 BMW R 100 RT Questions & Answers

check ht cap ..check ht lead, check condition of cut out switch, check power coming from coils, check power coming from cdi unit,

no,, its just oil thats run down the valve seals and the pistons are letting a little oil past just run the bike up till it clears its self out,, its been standing around a long time,, it will clear with a good run up,,,
thats why there called "the flying brick" 24000km is just run in for one of them! servic it well and it will go round the clock twice,, show me a bike that can do that? and dont say "honda!!!! ha ha ha! joke!

Hi Tom,

Typically, the charging voltage should be somewhere around 13.5VDC-14.5VDC, so you may be experiencing signs of a problem.

Before doing much else, I'd recommend you do two checks:
1) Assuming you are referring to a voltmeter mounted to the bike in your message, double check the voltage using a multimeter at the battery terminals to confirm there isn't a fault with your bike's voltmeter.

2) Because I'm unfamiliar with your particular model, I'd recommend checking the spec for your bike -- if you have a service manual, it should list the proper voltage range. Otherwise, you can probably contact a dealer or BMW tech to get the spec.

If you are below the recommended voltage range, there are a variety of possible faults.

The first that comes to mind is your regulator/rectifier circuit. The purpose of this circuit is to 1) rectify (turn the AC current generated by the engine into DC current) and 2) regulate (make the current stable at a given voltage, say 13.5 VDC, and dissipate the excess voltage as heat). Because this part turns excess electricity into heat, it's not uncommon for regulators to 'burn out."

I believe the diode board you replaced is the rectifier portion of the circuit, so it sounds like the regulator portion may need replacement. FYI, an aftermarket "reg/rec" that combines the regulator and rectifier is available for your bike (see: http://www.electrexworld.co.uk). The advantage to switching to such a unit is that it's probably better engineered than the OEM unit (more efficient/better heat dissipation), and might last longer.

If your battery is more than a few years old, you may want to take it to a dealer or auto parts store to have checked (many will do this for free), and consider replacing it. Often one bad component in the charging system will cause other good components to fail.


Finally, here is a generic fault finding diagram that is very well put together:
http://www.electrexworld.co.uk/pdfs/Troubleshooting-3P-PMG-&-RR.pdf

Good luck!

Rocker cover cap nuts are torque to 22 / 26 Nn and the 6 mm threaded valve cover nuts should be 10 - 20 Nm
Ride Safe
Bike-Doc

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Check your main fuse and your iginition fuse.

ck. the voltage regulator.

You don't say the age or type of bike but it's possible that your carbs are slightly out of balance with more fuel getting to one than the other.

There is no alternator per say.
A motorcycle has a stator. it is mounted in the engine case at the end of the crankshaft under the flywheel. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

The battery hides just underneath the rear of the fuel tank. The video shows how to replace it by lifting the rear of the tank. This is the new battery specifications

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BMW R90/6 900CC Motorcycle Battery

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depending on your scanner you may not retrieve abs codes check fuses the usual problem is a failed or damaged abs sensor borrow or have a shop run /scan for codes

On a 2008 BMW 650i, the fuse for the headlights is located in the fuse box under the hood. The specific fuse you need is Fuse #61, which is a 20-amp fuse located in the third row of fuses from the top. To access the fuse box, open the hood and locate the black plastic cover on the right side of the engine bay. There should be a diagram on the underside of the cover showing the layout of the fuses. Once you've found the correct fuse, you can use a fuse puller or a pair of needle-nose pliers to remove it from the fuse box. It's always a good idea to check the owner's manual for your specific vehicle to get the most accurate and up-to-date information on the location and function of the various fuses.

BMW F850GS No electrical power despite good battery, fusses and FOB. I'm out of ideas

This says no fuse box.

F800st fuse box - F800 Riders

https://f800riders.org > forum > showthread.php > 716... Sept 22, 2011 - There are no fuses. The CANBUS system monitors each circuit and shuts it down if it detects an overload. I did have a 2009 F800ST in Night Blue, ... Where is the fuse box??? - F800 Riders Aug 7, 2007 where are the fuses? - F800 Riders Jun 17, 2010 Help Isolating No Start, No Display Issue on F800ST Apr 8, 2018 F800R won't start - F800 Riders Jul 9, 2016 More results from f800riders.org ..

It depends on how hot it got and for how long? Holes in the pistons under the spark plugs. Burnt Exhaust Valves. Stuck Valves. First thing to do is to remove and visually inspect the spark plugs and then test for compression. Interesting reviews and on mentions burnt valves. https://www.motorcyclenews.com/bike-reviews/bmw/r1150rt/2001/ ..

you have wet the ignition system , carefully use a hair dryer to dry it out and spray with WD40.

ever look under the seat

If you turned the engine off with the kill switch and not the ignition key the headlight will stay on.
Make sure you turn the ignition key off.