Spark-less

[rob's new bike]

Morning all,
Tried to start my 1100gs this morning and it turns over fine but no spark. It absolutely hammered it down last night and of course I forgot to put the cover on...so I'm thinking rain ingress somewhere.
Any ideas where to look? I've coated any exposed wiring in WD40 and the sun is out so hopefully will dry out a bit.
The fuel pump primes the system, all lights, electrics etc work as normal...just no spark. Swapped around the relays to no avail.

Any wisdom or ideas would be much appreciated!

Had a bit of a search on here and found some info on failed hall sensors, which has brought up another question. Should I be able to start the engine on my 1100 with it in gear and the clutch pulled in? I've never been able to do this I have to put it into neutral.
I'm going to take the tank off to have a butchers underneath (to see if anything is glaringly obvious)
Thanks
Rob

 

[warmshed]

On my 1150 I cant start the engine in gear with the side stand down, with the clutch in or out. I expect it may be the same on the 1100. I normally start the engine and return the side stand before riding off to add a bit of security and I often get caught out with it in gear and not starting with the clutch pulled in.

Have you checked the kill switch for water? Best of luck. Dave.

 

[rob's new bike]

Hi Dave,
I'll check the switch this afternoon, a previous owner has kindly knackered the head of the screw so it will be a right pain no doubt!
Going to have a look at the hall sensor as well to see if there is anything obviously wrong in that department
Cheers
Rob

 

[Packer]

Check to see if you have power to the coil. If you have then the Hall would be a good place to start. If not the switchgear side of things and the maze of plugs under the front of the tank.

Here is a pearl of wisdom from Steptoe copied from an old thread:-

Here's a secret- don't tell anyone.

Turn on the ignition, listen to the fuel pump fire up then stop.

keep the ignition turned on, put the bike into gear.

Turn the rear wheel around very slowly.

Listen for the fuel pump to fire up again at some point while rotating the wheel.

If it doesn't fire up, the senders fecked. - Who needs a £25K diagnostic unit

Now bugger off, i'm giving all my hard earned secrets away .

It was too obvious for him to include but taking out spark plugs make the operation easier

 

[oblertone]

The 1150 ...

... is different to the 1100 in that the latter (as standard) will not start on the side-stand, but the 1150 will. If it spins but won't start then it's not the side-stand or other cut-out switch, because they won't let it spin

 

[rob's new bike]

Thanks for the replies guys, currently sitting waiting for my Firestorm to (hopefully) pass it's MOT! I'll get back to the gs this afternoon. Of course both my battery charger and multimeter seem to have given up the ghost since I last used them, so getting some new ones will also be on the cards this afternoon!
So annoyed with myself for letting the MOT on the 'storm slip (have only ridden the gs for the last few months!)
The storm feels like a toy in comparison it's so bloomin small!!
Again thanks for the advice
Regards
Rob


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[rob's new bike]

Right then, back to the GS after a fun few weeks on the 'storm!
A mate of mine went through the electrics and reckoned it was the ECU or hall sensor (hall sensor was my thoughts also). We borrowed an ECU and the bike started briefly first prod of the button but died 30 secs later . Now no spark or fuel again, so I am definitely thinking Hall sensor!
Question is where would be an appropriate place to source another? Should I look for new or second hand?
Cheers
Rob

 

[davegs]

Right then, back to the GS after a fun few weeks on the 'storm!
A mate of mine went through the electrics and reckoned it was the ECU or hall sensor (hall sensor was my thoughts also). We borrowed an ECU and the bike started briefly first prod of the button but died 30 secs later . Now no spark or fuel again, so I am definitely thinking Hall sensor!
Question is where would be an appropriate place to source another? Should I look for new or second hand?
Cheers
Rob

Not a choice buy a s/h one and you'll possibly be back to square one.

 

[Packer]

A number of threads on here and advrider.com about changing the sensor in the hall sender rather than the entire item as supplied by BMW.

It'll save you re-mortgaging the house.

 

[hank]

Have a look here. http://www.ebbo.org/2av54.php

 

[warmshed]

seen this?
http://www.ebay.co.uk/itm/Bmw-hall-...cycle_Parts&hash=item19c90ea004#ht_1209wt_932

 

[waterloo700]

seen this?
http://www.ebay.co.uk/itm/Bmw-hall-...cycle_Parts&hash=item19c90ea004#ht_1209wt_932

If you do buy one make sure you get the correct connector

 

[rob's new bike]

Thanks for the advice
Sound good I'll go for a new one, but I don't think that one on eBay has the correct connector. I'll have to strip the old one off and have look at it!


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[bobsnew]

N0 SPARK !!!

Having read some of these posts, I am almost convinced that my hall sensor is knackered, but that's purely from a paranoid novices point of view, I have no spark at the plugs and cant detect fuel being supplied to injectors. i have now removed the alternator belt and bottom pulley and can see the suspect Hall sensor, but what now, as its so damn cold I cannot even get the bike in 5th gear and rotating rear wheel as suggested to check if fuels being pumped through. So where do i go from here please and whats the most economical fix

 

[uncle dick]

The fuel pump is triggered from the top sensor. If the bottom one packs up, the rear wheel test won't show it. See my post from the weekend.

 

[fatnfast]

Have a read here:

http://advwisdom.hogranch.com/Wisdom/oilhead_hall_sensors.pdf

A lot of waffle, but the tester is simple to make. You might be better off starting your own thread, but use the search facility as Hall Effect Sensor failure has happened to quite a few people.

 

[bobsnew]

The lights on but no spark

Yes thanks appreciate the advice and link, I think the work involved to make the tester is beyond my electrical and engineering skills though, plus I am eager to be mobile again asap.

 

[bobsnew]

Hall effect sensor

having just experienced a breakdown with this component and now realising what a common occurrence and how expensive a replacement can be, there is loads of useful information as how to repair and replace, but no one has yet seems to have found an economical source of suppliers, i myself would not feel confident of touring abroad without a spare, am i just being neurotic or do others feel similarly, so have you remedied the situation ?

 

[uncle dick]

I've just replaced mine and see that there's a Bosch part number stamped on it. Our Bosch agent does list it as an Ignition Trigger so you could make enquiries.

 

[bobsnew]

bosch

Yes I have identified the part number BOIgnSen-R277 but unfortunately no nearer to getting a more economical source of supply.