1150GSA running rough

[fozziegsa]

Hi all, a couple of weeks ago i was complaining that my bike had a flat spot at around 3500rpms.
I had the valves and throttle bodies balanced by steptoe.

I went to Bahnstormers on saturday, and as i was travelling there, sure enough, the bike started to play up. I proceeded to buy a coil pack, a set of main plugs and air filter.
I replaced the main plugs and the air filter at the shop, and went to Loomies and stopped off at the petrol station to fill up.
As luck would have it, i opened up the filler cap, a load of water glugged into the tank. I managed to stop the rest of it with some paper towels.

On the way back after about ten miles it started playing up so i stopped in a layby and changed one of the coil packs. I carried on with my journey and the same thing happened.(after 15 miles or so)

I tried different speeds and i maaged to get it to "perform" at 30mph in third 40mph in fourth 60mph 2000rpm 4000rpm etc.

After reading some threads this morning, i went and brought some dry fuel and set off on another test ride.
As i exited the M25 travelling anti-clockwise (keeping a constant steady pace 60ish mph and about 8miles into my journey) i went round the long left hand bend to join the M40.
As i did, thats went it started to play up. (flat spot/missing/hesitating)
And it kept doing this off and on until i got off at High Wycombe (east).

I put the dry fuel in, filled up and set off again. On the way up the A40 to stokenchurch, i couldnt feel anything (10miles). I stopped of to see family and headed back down the M40.

As i got to around the junction with the M25 it started playing up again.
I stopped of at the polish war memorial and put the old coil pack back in the left hand side cylinder and swapped it with the right hand side. Set off and went to the ACE and then went home via the M1.

From when i changed the coil pack the second time i havent managed to get it to play up.

The dry fuel had been in for about 30 miles before the problem came back. Is that long enough for it to "work" or is it instant?
Was the change of the coil pack a coincidence?


Obviously the hole in the filler neck isnt working, how is the best way of cleaning it, (compressor and put the air line against the hole and pull the trigger)?

Any thoughts please.


Fozziegsa. PHEW

 

[chad]

any chance the fuel pump could be playing up

 

[Carl]

nice ride report, just missing some photos

dont use a compressor... bad things can happen.

squirt of wd40 sometimes works apparently


edit... to be a bit more helpful... you could have 2 problems, obviously water in the tank is one, and the dry fuel should cure that, but you could also have a faulty coil pack as you thought. When troubleshooting, do one thing at a time, otherwise you will never know what fixed it. To check coil packs try and run it with the lower plugs disconnected and reconnect one at a time to find the faulty coil.

 

[fozziegsa]

sorry should have mentioned that Steptoe when doing the other things, done the coil pack test and they appeared okay. Doesnt mean to say that they aren't knackered.
apart from the plugs and filter, i did do one thing at a time!

Fozziegsa.

 

[MattW]

Filler neck water drain hole cleaning:

It's unlikely an air line will blow it through (it's a very small hole) and as other have said, it's quite easy to bu**er things up with compressed air if you aren't careful.

I used a piece of thick nylon line to rod it out (strimmer line works well). Make sure the working end is rounded and smooth as you have to get round some tight bends. If you use wire, take care as you will be working it round some bends in a rubber hose (risk of puncturing the hose).

I tried squirting it with wd40, but it didn't work (although I did use WD to confirm that it was unblocked after poking it out).

 

[biggles12]

Just a thought. If the overflow pipe is also a breather could this be the fault with the bike? Air lock in tank.

 

[MattW]

Just a thought. If the overflow pipe is also a breather could this be the fault with the bike? Air lock in tank.

I don't think the oveflow is a breather (how would it drain water from the filler neck if it had a connection to the interior of the tank?).

But I may be barking up completely the wrong tree

 

[D6]

if overflow blocks, itl let water in , if its clear it just deposits spillage on the ground, no air lock

 

[Spout]

I don't think the oveflow is a breather (how would it drain water from the filler neck if it had a connection to the interior of the tank?).

You're right - there's two seperate pipes.
Both of these travel through the tank though - hence you'll need to be carefull cleaning them.
They both exit by the foot brake pedal. Try blowing up these (by mouth) to see which one is the overflow (filler cap open with a rag int'ole)
Both these pipes also have a connector by the back RHS of the tank (undo the bolt and lift the tank for ease of access).

If the blockage is in the lower half you can safely use an air line to clear.
I wouldn't recommend trying to clear with wire - if the blockage is in the tank section then it'd be best to empty tank, take pipes off and clear. A good opportunity to replace your fuel filter.
A search on here should give you a step by step guide for filter replacement.

Good luck........

 

[fozziegsa]

Hi all.
I haven't had chance to clear the breather holes yet.

On my way back home from my ride out last week,(billy no mates) i though the problem came back after i had been around a tight right hand bend (roundabout).it then started to fart about. also was doing it after i had been through some twisties.

Could banking the bike over "do something" Just fuel for thought.


Fozzie.

 

[Carl]

Hi all.
I haven't had chance to clear the breather holes yet.

On my way back home from my ride out last week,(billy no mates) i though the problem came back after i had been around a tight right hand bend (roundabout).it then started to fart about. also was doing it after i had been through some twisties.

Could banking the bike over "do something" Just fuel for thought.


Fozzie.

Does sound like water in the tank to me... drain the tank to check, you will see straight away if there is water in there.

 

[Stewart H]

Does sound like water in the tank to me... drain the tank to check, you will see straight away if there is water in there.

+1
Stewart

 

[(RIP) Proff]

+2, mates oilhead had same symptoms, got nearly a litre of water out of tank.
Took tank off after draing as much as poss and emptied remainder into a Demijon, bottom 2" were just watery shite

 

[fozziegsa]

Thanks for the replies

I thought my dry fuel would have cured that!

There is no point having the tank off with out a new filter to go in is there?
Fozzie.

 

[Comfy Old Boots]

Thanks for the replies

I thought my dry fuel would have cured that!

There is no point having the tank off with out a new filter to go in is there?
Fozzie.

depends on whether you wish to take the tank off twice.

I clean my bunged up overflow tube by getting on my hands and knees and using my lips to blow the crud out. An inch long piece of something came flying out...don't let it get in the tank

 

[Carl]

getting on my hands and knees and using my lips to blow

 

[fozziegsa]

Hi all,
Had my bike put on a Dino at PDQ's cheers

its all working well however he did say that it felt a bit snatchy around the 3grand mark and suggested that i have the ecu read for any fault codes.

My question is, can this only be done at a main dealer?

Had the bike on the dino 3 times.
1. with cat code plug in (well the wire trick anyway)
2. without the wire
3. and with the wire again

My bike lost power WITH the wire in. only 2/3 bhp/ftb's mind you

so with that in mind,
im out


Cheers

Fozziegsa

 

[fozziegsa]

its all working well however he did say that it felt a bit snatchy around the 3grand mark and suggested that i have the ecu read for any fault codes.

My question is, can this only be done at a main dealer?

Anyone?

 

[MattW]

Reading fault codes is either a dealer job or perhaps someone near you has a GS911 (assuming they work with 11xx's ?) and would be prepared to 'read' your bike.

 

[fozziegsa]

Reading fault codes is either a dealer job or perhaps someone near you has a GS911 (assuming they work with 11xx's ?) and would be prepared to 'read' your bike.

Cheers
MattW

Anybody prepared to "read" my bike!

Have bike, will travel.

Fozziegsa.