ADVrider

Go Back   ADVrider > Bikes > GSpot > Parallel Universe
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-26-2011, 02:40 PM   #1
shuston OP
Adventurer
 
shuston's Avatar
 
Joined: Jun 2010
Location: Central Coast of CA
Oddometer: 63
Pissed F800GS Wont start - Help

I have gone through a few posts to make sure I am not asking a question on a known issue here. It appears I may have a bad fuel pump or something with the tank.

So here's what happened.

I rode about 60 miles yesterday up in the hills with lots of dirt time. (west Camino Cielo area.) The bike ran just fine. Prior to heading out, I fueled up with some 92 octane in a 2 plastic fuel jug. Bike ran just fine the whole time. Started and stopped the engine twice during the ride for pics and water. Rode home, out the bike in the garage. All done. No issues.

Today. I was going to do the same ride again, but go further. So I use the same fuel can, add another gallon or so. Fill it to the red tab as usual. Roll it out of the garage and go to start it up. It just cranks and cranks. No even the slightest indication of combustion occurring. Crank crank crank. Nothing. Put it on it center stand. Crank crank crank. Nothing. Open the gas cap and crank crank crank. Nothing. Nada. No the battery is getting low. (I have a charger.)

Anyone know what the f**k is wrong? It is a 09 F800GS with 3700 miles on it. I suspect a faulty fuel pump, but not sure.

Any ideas? Oh yea, my closest dealer is 50 miles or so away and closed til Tuesday.

Thanks inmates.........
shuston is offline   Reply With Quote
Old 06-26-2011, 02:43 PM   #2
YetiGS
No Talent Ass Clown
 
YetiGS's Avatar
 
Joined: Apr 2007
Location: San Diego
Oddometer: 7,314
Quote:
Originally Posted by shuston View Post
I have gone through a few posts to make sure I am not asking a question on a known issue here. It appears I may have a bad fuel pump or something with the tank.

So here's what happened.

I rode about 60 miles yesterday up in the hills with lots of dirt time. (west Camino Cielo area.) The bike ran just fine. Prior to heading out, I fueled up with some 92 octane in a 2 plastic fuel jug. Bike ran just fine the whole time. Started and stopped the engine twice during the ride for pics and water. Rode home, out the bike in the garage. All done. No issues.

Today. I was going to do the same ride again, but go further. So I use the same fuel can, add another gallon or so. Fill it to the red tab as usual. Roll it out of the garage and go to start it up. It just cranks and cranks. No even the slightest indication of combustion occurring. Crank crank crank. Nothing. Put it on it center stand. Crank crank crank. Nothing. Open the gas cap and crank crank crank. Nothing. Nada. No the battery is getting low. (I have a charger.)

Anyone know what the f**k is wrong? It is a 09 F800GS with 3700 miles on it. I suspect a faulty fuel pump, but not sure.

Any ideas? Oh yea, my closest dealer is 50 miles or so away and closed til Tuesday.

Thanks inmates.........
Sounds like what happened to my bike. On my bike it was the fuel pump. BMW reportedly has a new one that doesn't die with California gas.

Could also be the fuel pressure sensor. Check out this post:

http://advrider.com/forums/showpost....&postcount=521

Good luck!
__________________
-Scott-
Semper Fi
'04 BMW R1150GSA, '04 KTM 625 SXC
"You had better bring an extra magazine. Yeti's amped up on weird shit are hard to bring down." Lonestar2112
YetiGS is offline   Reply With Quote
Old 06-26-2011, 04:23 PM   #3
shuston OP
Adventurer
 
shuston's Avatar
 
Joined: Jun 2010
Location: Central Coast of CA
Oddometer: 63
Thanks for the tips Yeti. I'll pull the sensor wires and check it out. Looks like that sensor runs about $150, so not the end of the world. Will check it say for sure later tonight.
shuston is offline   Reply With Quote
Old 06-26-2011, 08:13 PM   #4
JoelWisman
Beastly Adventurer
 
JoelWisman's Avatar
 
Joined: Apr 2009
Location: STL, MO, USA
Oddometer: 1,392
In order of prevalence....

#1: stuck fuel injectors. Old glue like gas will cause this, as wil gas with the slightest trace of deisel or contaminated with many other things. Aluminum oxide from the fuel pump caused by alcohol oxygenated fuel contaminated with water will do this as well.

Solution, take of the little plastic triangle on the right side of the bike. It is the cover held on by 1 T25 screw. Look inside and you will be able to see the right fuel injector. Thump the injector repeatedly with something hard and flat while cranking the engine. Try not to bend the injector, just induce sharp shocks and it will usually in-stick.

If that works, get the fuel out of it and find fresh fuel from a diferent provider.

Riding the bike is acceptable to get the fuel out, but don't turn it off till your pouring in fresh fuel.

Buy some BMW techron and use 1oz per gallon for the next few tanks, then once every thousand miles.

#2: stuck fuel pump. Remove your fuel pump controller. It's the metal thing with fins and 3 wires plugged into it. It is under the seat and under the big rubber cap with a hose coming out of it. It is secured by 2 T20's.

Once the fuel controller is removed, unplug it's connector from the fuel pump. Needle nosed pleyers help but either way, u need to squeeze the tabs on the sides of the connector.

Once this is out of the way, rig up a way to get power from the battery directly to the terminals on the pump. Polarity doesn't matter, you want to apply power for just a second and then reverse the polarity and do this a couple of times, never longer then a second at a time. What your doing is jogging the pump back ond fourth to un-jam it. Blue bullet connectors, the crimp on sort will more or less fit these terminals. You can get those from any automotive store.

There may be some risk of fire and explosion. The fuel pump controller and ZFE act as a fuse. You will be bypassing that fuse. Under any normal circumstance the fumes in the tank will be way to rich to ignite, but under some possible circumstance, it could be ignitable. If preceding does not make sense, concider NOT doing the above. Cars and motorcycles never blow up in 49 of the 50 states, but you are in the one state it does happen, especially in Hollywood.

#3: DME brain fart. Rare, but just like windozs, the bikes operating system can crash. Unhook the battery for a few hours.

What's described above with the fuel pressure sensor failing is super rare. Less then 10 in warranty failures for the whole USA in 3 years, but it is possible. The connector for the FP sensor is behind the same cover the fuel injector is. Unplug it, if it starts and runs, that was your problem.

Good luck.
__________________
Owned to date. Honda Aero 50, Honda Elite 80, Honda Elite 250x2, Suzuki Katana, Suzuki RF600, Yamaha YZF1000R, Kymco Xciting 500, Suzuki GS500, Suzuki Burgman 650, BMW F800GSx2, BMW S1000RR, Aprilia Scarabeo 200, Aprilia Caponord, Aprilia Sportcity 250
I love and miss you Jeneca and I'm sorry.
JoelWisman is offline   Reply With Quote
Old 06-26-2011, 09:47 PM   #5
Apostolos
Gnarly Adventurer
 
Joined: Feb 2010
Location: The Sierras
Oddometer: 391
Quote:
Originally Posted by JoelWisman View Post
In order of prevalence....
Copy, paste, and added to my Joel W. folder on my computer.

God Bless,
David
Apostolos is offline   Reply With Quote
Old 06-27-2011, 04:44 AM   #6
JRWooden
Beastly Adventurer
 
Joined: Jul 2008
Location: The great state of confusion
Oddometer: 4,111
Thanks Joel!

Q: I had heard that you could hasten the reboot of the DME by disconnecting the battery leads and then shorting the leads together ... any truth to that rumor?

My BMW "wisdom of the twins" document (peppered with wisdom from Joel) is in Microsoft Word right now, but I think I can convert it to PDF, send it to my iPhone then read it on the road if need be withthe iBook app.
JRWooden is offline   Reply With Quote
Old 04-12-2012, 08:21 AM   #7
togume
On the Black Beast
 
Joined: May 2010
Location: Adventuring the American Continent
Oddometer: 48
Progressively Harder to Start

Hate putting a "me too" type reply, but... me too!

Actually, mine issue seems to be a little different; Since about 4 weeks ago I've noticed that it's gotten progressively harder to start the bike. I used it throughout the Minnesota winter (at least a couple times a month), and throughout that time it fired right up. However, now that the weather has started to improve, I've been ramping up on the riding.

This morning, after not riding for ~5 days, I cranked and cranked, but no start.

I will be doing the following:
* Checking fuel level (doubt it, since it's been deteriorating over time)
* Check battery health
* Check voltage going to fuel pump
* Tap fuel injectors as I crank

If anyone has any ideas regarding the fact that it got progressively worse, It'd be appreciated.

Wish me luck!

------------------------UPDATE------------------------

Followed Joel's instructions. Tapping on the injector through the right-hand side triangle did it. Went to auto-parts store for some Techron, but they only had Seafoam, so got a pint of that. Put in 4 OZ of the stuff on a mostly full tank, and rode around for a few miles. Turned her off, came back a while later, and fired right up.

Will update if anything changes.

Thanks for the tips and great write ups, crew!

togume screwed with this post 04-13-2012 at 12:27 PM
togume is offline   Reply With Quote
Old 04-14-2012, 07:26 PM   #8
JoelWisman
Beastly Adventurer
 
JoelWisman's Avatar
 
Joined: Apr 2009
Location: STL, MO, USA
Oddometer: 1,392
Quote:
Originally Posted by togume View Post
Hate putting a "me too" type reply, but... me too!

Actually, mine issue seems to be a little different; Since about 4 weeks ago I've noticed that it's gotten progressively harder to start the bike. I used it throughout the Minnesota winter (at least a couple times a month), and throughout that time it fired right up. However, now that the weather has started to improve, I've been ramping up on the riding.

This morning, after not riding for ~5 days, I cranked and cranked, but no start.

I will be doing the following:
* Checking fuel level (doubt it, since it's been deteriorating over time)
* Check battery health
* Check voltage going to fuel pump
* Tap fuel injectors as I crank

If anyone has any ideas regarding the fact that it got progressively worse, It'd be appreciated.

Wish me luck!

------------------------UPDATE------------------------

Followed Joel's instructions. Tapping on the injector through the right-hand side triangle did it. Went to auto-parts store for some Techron, but they only had Seafoam, so got a pint of that. Put in 4 OZ of the stuff on a mostly full tank, and rode around for a few miles. Turned her off, came back a while later, and fired right up.

Will update if anything changes.

Thanks for the tips and great write ups, crew!
Keep running techron concentrate in every tank for a while, but good chance the screwdriver trick worked and saved you $500 bucks which I love as am no longer in BMW service lol :)
__________________
Owned to date. Honda Aero 50, Honda Elite 80, Honda Elite 250x2, Suzuki Katana, Suzuki RF600, Yamaha YZF1000R, Kymco Xciting 500, Suzuki GS500, Suzuki Burgman 650, BMW F800GSx2, BMW S1000RR, Aprilia Scarabeo 200, Aprilia Caponord, Aprilia Sportcity 250
I love and miss you Jeneca and I'm sorry.
JoelWisman is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 05:13 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014