bike cut out today?

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Big_AL · #16 Post by **Big_AL** » Sun Apr 20, 2008 4:45 pm

okay, about 200 odd miles on from the last problem and it stuttered today, once just as the petrol light was coming on as i was giving it large in first and instead of a wheelie i got a kangaroo ride

I reckon it's gotta be a load of old cack in the tank and as the tank empties the cack gets thrown about and sucked through to the FI. I have noticed loads of gunk, all around the edge of the filled cap, looks like ear wax

how is petroleum jelly made? cause that's what it looks like to me?

Fausto · #17 Post by **Fausto** » Sun Apr 20, 2008 7:06 pm

Lift the tank. At the bottom right at the back are 2 alloy screw in nipples with rubber hoses attached. These nipples block very easily and a blockage will prevent drainage from around the fill up hole. Remove the hoses, unscrew the nipples and give everything a good poke/blow through.

Even if this is not the answer to this particular problem I guarantee it will prevent a future one

Big_AL · #18 Post by **Big_AL** » Sun Apr 27, 2008 10:01 pm

I checked the two screw in nipples, the closest one was clean as a whistle, the other one was full of cack, so i cleaned it out and refitted it but sadly the problem still exists... It stalled this time as i wheelied over the crest of a bump in the road. Nose came down and engine stalled, wouldn't bump start as i slowed down but started straight away from the starter???

coming to think about it, the problem mostly occus when going up hill or with fron end in the air or under extreame acceleration. Could this be the tip over sensor getting confused? Is it possible to bypass the tip over sensor? Also i have heard a diagnostic mode mentioned, is this simply a case of connecting two wires found near the battery and reading off a code? maybe this is worth trying? One other thing i noticed, is while the engine was stuttering i was almost at full revs 10K but noticed the indicator warning light glowing? itialin electrics...........

Falcopops · #19 Post by **Falcopops** » Mon Apr 28, 2008 1:57 am

certainly starting to sound like the tip over switch, make sure its mounted properly.

There is a bypass trick that involves a resistor across the terminals, have a search here or on AF1.

the stuttering is probably down to the rev limiter, thought it cut in about 11 to 11.5 and the light can be set to flash anywhere you want between 6 and errm lots.

Big_AL · #20 Post by **Big_AL** » Mon Apr 28, 2008 6:34 pm

I have decided to be methodical about this and am going to eliminate one thing at a time so I started today, i hooked up the diagnostic mode and nada, it read -1 so no useful error codes. I have already cleaned out the breather nipples so it's not that. I have bypassed the kill switch so i'll see if the problem reoccurs, if it does i'll bypass the side stand switch, then the tilt switch (although from what i've read if that's triggered the ignition needs to be switched off then on again before restarting is possible, this is not the case on my bike.)

If it's not any of these then it's off to the dealer as further fault finding will probably be beyond me. Hope it's something simple...

Samray · #21 Post by **Samray** » Mon Apr 28, 2008 6:51 pm

Does it still happen with a full tank?

Big_AL · #22 Post by **Big_AL** » Mon Apr 28, 2008 9:29 pm

Yes it has done once. But generally does it towards the end of the ride i.e. after about 50 odd miles when the bike is properly warm. More often than not just as the fuel light is about to come on...

Tweaker · #23 Post by **Tweaker** » Tue Apr 29, 2008 9:24 am

Had a similar problem with mine a couple of years ago. It turned out to be a connector under the passenger seat (sorry, can't remember which one) - one of the pins had got pushed up inside the plastic block and was only just making contact. Once sorted, it's been fine ever since but it was a bit of bu**er to find

Big_AL · #24 Post by **Big_AL** » Tue Apr 29, 2008 11:36 am

I did disconnect and wd40 all the connectors and relays etc under the seat at the same time as bypassing the kill switch but all the connectors looked good, no corrosion etc

Big_AL · #25 Post by **Big_AL** » Sun May 04, 2008 5:36 pm

Right, it's still doing it so i'm taking it back to the dealers. It's not the breather pipes, the side stand switch, the engine kill switch or the tilt sensor. But I have found it is to do with the bike being warm. It is fine at first but as soon as the bike is warm (i.e. over 85 deg C) if you've been sat at some lights for a while and you try and pulll away quickly the engine dies until you stop then can be restarted with the starter. If you pull away gently (i.e. below 4 or 5k revs then it's okay) until the air flow cools the motor down to the 70's again when you can give it some. So it certainly seems to be related to engine temp. Gotta be the ECU?

Falcopops · #26 Post by **Falcopops** » Sun May 04, 2008 11:35 pm

Seems an unlikely explanation, but all that comes to mind after reading you post.

Could the fuel pipe be getting too hot, causing fuel to vapourise and restrict the fuel flow?

Long shot, but might be worth checking the routing of the fuel delivery pipe to see if there are any high spots where a pocket of gas could be trapped.

Good luck.

Big_AL · #27 Post by **Big_AL** » Mon May 05, 2008 2:27 pm

I think the temperature thing was a red herring! It was doing it today (seems to be getting gradually worse) and was cutting out even when giving a small amount of revs (at this point the fuel light had just come on) so i filled up and the bike was fine. So now i'm guessing it may be a fuel pressure issue, i.e. the problem worsens as the tank empties. So my money is now on the fuel pump or a very mucky tank / clogged fuel filter. Anyways i'm going to call the shop tomorrow and get them to sort it, the weathers getting nice so want my bike in full working order so I can go out and play properly

Nooj · #28 Post by **Nooj** » Mon May 05, 2008 7:08 pm

Bummer, dude. Hope you get it sorted easily.

Samray · #29 Post by **Samray** » Mon May 05, 2008 7:22 pm

The top-up from the garage would be chilled, so don't discount it altogether.

Although I agree with Pops tis unlikely.

Falken · #30 Post by **Falken** » Mon May 05, 2008 7:55 pm

Hi Al, is it possible there could be water in the tank?
This would settle at the bottom, and if just below the level of the feeder pipe may cause this problem while sloshing about when nearly empty.
Just another idea hope it helps.