Hi, last week the bike wouldn't start so I assumed it was the battery and bought a new one, still won't fire. Turns over fine, disconnected fuel lines at injectors and fuel shoots out. Sparks at plug. Sprayed everything in wd 40, fuses look good, so I'm stuck. Only thing I'm noticing is the lack of a smell or petrol despite all the turning over its been doing. Any ideas guys? Cheers in advance, Alex.
GS 1150 won't start.
- Thread starter Mullgs
- Start date
Mongolian Explorer
Registered user
Fuses for the pump might be worth checking must be 10 amp !!
does "disconnected fuel lines at injectors and fuel shoots out" mean you actually disconnected the lines and watched the fuel come out, or pulled out the injectors still connected to the fuel lines and watched it 'spray' out the injectors? If you've got fuel at the lines but the injectors aren't injecting then obviously it won't run. You have regular spark though? Sounds like the hall sensor and coil is ok in that case so it should also be triggering the injectors too
Disconnected from injector, turned on ignition, petrol came out. Is it ok to take the injectors out and turn the starter? Got no experience of bmw's, always had Japanese and British bikes up till now.
Karlread
Registered user
Yes, but make sure there is no hot exhaust, electric panel heater switched on or you or anyone watching is smoking a cigarette!
First rule if the bike doesn't start after lifting the petrol tank... Check the throttle cables are seated (especially on the R/H side).
If they aren't seated full the bike won't start. Or if it does start will barely run.
There's even a STICKY about it in the "1100/1150 info & tips" section.
Good.
Bad.
If they aren't seated full the bike won't start. Or if it does start will barely run.
There's even a STICKY about it in the "1100/1150 info & tips" section.
Good.
Bad.
There's unlikely to be a hot exhaust if the bike won't start
The petrol doesn't squirt far - it should just spray out a bit of mist. It's fine to just pull it out and see its firing ok.Checked an injector tonight, sprayed ok. Took off fuel line again and pumped into a jar, petrol was cloudy! I assume this is water? Or does the pump introduce air? If it's water, apart from dumping the fuel, is there anything else to check for. Bike lives outside, and I filled the tank two weeks ago, was running fine.
flatdog
Registered user
Have you ensured the plugs are absolutely dry after all that cranking.
or it's cheap to just change the plugs for new ones and see if she starts.
Quickstart sprayed into induction as she's turning over.
These methods have helped me in the past when I have checked everything and it looks ok.
or it's cheap to just change the plugs for new ones and see if she starts.
Quickstart sprayed into induction as she's turning over.
These methods have helped me in the past when I have checked everything and it looks ok.
garry a
Registered user
If you keep the bike outside you may be right about the water in fuel the small drain pipe in the fuel filler neck gets blocked. if it is water it is better to take tank off and make sure you get every drop out. I have had same problem on 3 bikes and just draining and refilling will not cure problem the water drops just roll around the tank till they get sucked up again.
flatdog
Registered user
Have you checked a few things as shown earlier.
Removing the tank isn't too hard, but it can add to the problem by disturbing things which may end up adding to other faults..
If you haven't yet,
Check as per Steptoes advice and try what I've posted earlier.
If you have water in the fuel the quickstart will make it fire...
Ref the drain hoile position, unlock the filler cap and find the drain hole on the filler plate mounted on the tank. With the red tube attached liberally spray the wd40 into the hole and watch it drain out below your foot brake area. If it runs out then your drain isn't blocked and your shouldn't have much water in the tank.
Removing the tank isn't too hard, but it can add to the problem by disturbing things which may end up adding to other faults..
If you haven't yet,
Check as per Steptoes advice and try what I've posted earlier.
If you have water in the fuel the quickstart will make it fire...
Ref the drain hoile position, unlock the filler cap and find the drain hole on the filler plate mounted on the tank. With the red tube attached liberally spray the wd40 into the hole and watch it drain out below your foot brake area. If it runs out then your drain isn't blocked and your shouldn't have much water in the tank.
Throttle cables are seated ok, cheers steptoe. When I opened the filler cap, the well was full of water, which ran into the tank, so I think water in the fuel is the problem. Took the tank off, but getting everything out not easy. Is there a tank flushing product out there when I'm done?
nud1e
Registered user
Try Wynn Dry Fuel to disperse the water.
(RIP) Bin Ridin
Registered user
I had to remove the fuel pump cover (careful with the wee studs) to mop the water out. Worth doing.
Also poke the fuel filler drain hole with wd40 straw while blowing back up the drain hose, until it is really free.
Put a rag in the tank neck to keep the crap from going in the tank.
Test by pouring petrol onto the neck flange, it with petrol, it will drain in a solid stream when properly cleaned out.
Also poke the fuel filler drain hole with wd40 straw while blowing back up the drain hose, until it is really free.
Put a rag in the tank neck to keep the crap from going in the tank.
Test by pouring petrol onto the neck flange, it with petrol, it will drain in a solid stream when properly cleaned out.
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