I have BMW FGS 650 2009 model but bike is injecting and the fire is not stable that my fault

How To Ride In Motorcycle In Heavy Crosswind RideApart

What year and is it carb or fuel injection? Chances are you have a carb model as fuel injection rarely gives this problem. Check choke operation on the carb. Assumes all other areas o/k, that is battery, ignition, starter motor etc. as a slowly turning motor is harder to start when cold.

Either there is no injection signal or no fuel pressure.

Might be an immobiliser fault...

Does it crank and not fire , if no crank check battery jump start , if no fire check for spark fuel and injection

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!

The display is really FI as in Fuel Injection. The fuel injection computer has sensed a fault in the Injection system. You will need to ride the bike to a dealer and have them read the fault codes. It is probably just something minor. Major faults will not allow the bike to run. You will not hurt the bike if you ride it.

Can I get a “very helpful” rating on this answer?

1. Frame. If you've owned K-bikes, you know that nothing flexes between the steering head and the swingarm pivot. Very stable. Not so on BMW airheads, with their double-cradle steel tube frames, which earned airheads (like the R90S) the nickname Gummikuh (rubber cow). 2. Brakes. The R90S has 70s-era brakes. Not so good by comparison to late 80s-early 90s K standards. Many of the Ks also have ABS. Not so the R90S. 3. Engine: K-bikes engines are liquid-cooled fuel injected, computer controlled, and exhaust catalyzed. The R90S, like other airheads, is carbureted and air-cooled. Stay out of traffic jams on the highways, or pull over and shut it off. 4. Tires: The post-90 K-R bikes models have radial tires. I've found the R90S, like the KRT/LT models, to feel somewhat tall with its bias ply tires. That said, several years back I bought an R100RS just to own one, and to understand the experience was. Didn't hold a candle to a KRS in terms of performance, but had a certain heritage-appeal.

you might want to check the ingition coils first and if they are good check the spark plug wires that is the most common problem with no fire.also check the spark plugs see if they are set right.I had the same problem with my honda cb 650 custom and all i did was change the wires