hello everybody, can you help.

[hawkman]

greetings all, ive been a lurker for quite a while now, so i just registered today,
ive a 2002 1150 gs , not a twin spark with a problem,
it started , when it was left outside in the rain for a few days,
initial problem seemed to be water in the tank , due to a blocked tank vent, which ive now cleared, removed the tank ,drained the fuel and dried the tank, and fitted a new fuel filter,.
the problem is , when the bike is at a constant rev , you get a popping noise from the exhaust,on the road it constantly surges , struggles to reach 60 mph , and generally has no power,. on take off .you have to slip the clutch, or it cuts out,.
so far i have,.,. drained the tank fitted new fuel filter,checked the valve clearance, cleaned the throttle bodies,cleaned the plugs, reset the tps,checked the injector spray pattern,swapped over plug leads, balanced the throttle bodies,,. and its still the same,.
the only problem that i can see is the fuel pressure on the pump is 6.2 bar, and the throttle bodies were very oily on the airbox side, and a slight less quality spark on the left cylinder,.
forgot to mention that i checked the compression on both cylinders , and it was 140 psi,.
at this stage i dont know what else to check,.
can anybody please help,.

 

[bela]

Maybe

Coil packs

 

[hawkman]

Coil packs

kinda thinking the same , stick or main coil,?.
the fact that the fuel pressure is two bar over the recommended pressure,.would that cause a problem, . ie flooding,. and suggest fuel rail pressure sensor,.
also the plugs are always sooty and slightly wet.

 

[Steptoe]

Coil packs

Second line down on the opening post - not a twin spark.

Try fitting another TPS unit from a different bike if there's someone near to you.

 

[hawkman]

Second line down on the opening post - not a twin spark.

Try fitting another TPS unit from a different bike if there's someone near to you.

thank you for the reply, would the greater fuel pressure be a problem, do you thin, ?

 

[Steptoe]

the only problem that i can see is the fuel pressure on the pump is 6.2 bar, .

thank you for the reply, would the greater fuel pressure be a problem, do you thin, ?

You're looking up the wrong alley.

The fuel pump supplies the pressure, the pressure regulator sets it. The pump pressure has to be higher than what the regulator is set to supply, that's how fuel injection works.

People fit the higher pressure regulator from K1200 to raise the pressure on their Gs's so it has a better throttle response.

 

[hawkman]

You're looking up the wrong alley.

The fuel pump supplies the pressure, the pressure regulator sets it. The pump pressure has to be higher than what the regulator is set to supply, that's how fuel injection works.

People fit the higher pressure regulator from K1200 to raise the pressure on their Gs's so it has a better throttle response.

ok so, that rules that out so,.
would the tps be your guess so,?
actually when its running you would swear that the timing is out a few degrees,.popping out the exhaust,reluctant to take a rev,.and both plugs running rich.

 

[Colban]

The mans had the tank off....
now where's that picture of the throttle cable.

Check the seating of the offside thottle cable at the TB.

 

[Colban]

Knew it was here somewhere.

 

[hawkman]

Knew it was here somewhere.

not to sound being rude, but ime not that stupid , i have checked that a dozen times.

 

[davegs]

You were not accused of being stupid, this problem has caught out many people not all newcommers either. People here are trying to help so don't bite the hand that helps.

 

[Wrigsby1]

1st i would follow Steptoes advice about a TPS swap as the reset is only for throttle shut position.
As it is one of those spitting farting won't rev Q's it does point towards electrical. As its a twin, a simple probs could cause it to sound and act terribly. I had a coil go down and this led to one cyl failing but I have also had inermittent, won't rev, spity, farty probs with an intermittent coil prob on other bikes. Someone like M/works will/used to do used parts on a use or return policy so why not order a used TPS and coil and change them one at a time.

Trouble with coils is that it's only under load that some probs become apparent.

Also test ride and look to see if the instruments cut in and out at all as this could be headstock loom/ignition switch prob.

 

[hawkman]

first of all, sincere apoligies if i came across as being ungrateful to all posters for advice given,.
as regards m/works , have they a website.?
ok, i will see can i get a ,tps, coil , leads, and hall sensor ,and swap one by one,,.
hopefully the problem lies somewhere withen thease.
another question while ime here,
are thease engines normally very noisy, as in top end rattle,.?
beginning to wonder have i got crank or conrod wear,.?
also does the endfloat on the rocker of the tappet matter much, as i did not check this when setting the valves.?

 

[Wrigsby1]

If you search "endfloat" or similar on this forum you will find a very good guide by Steptoe about checking endfloat.

Re noisy engine. They can be and will be worse if yours aint running right. Also the Throttle Body (TB) butterfly spindles can rattle which makes the engine sound shite. At tickover, apply pressure with fingers to the cable housings on the TB's on the inside. The rattle may go away somewhat.

Motorworks have a website or you can ring them up. There is also Motobins and James Sherlock that can provide used and new spares and can be found via Google.

Start with the simple bits such as TPS, coil and leads and work up.

Good luck

 

[hawkman]

If you search "endfloat" or similar on this forum you will find a very good guide by Steptoe about checking endfloat.

Re noisy engine. They can be and will be worse if yours aint running right. Also the Throttle Body (TB) butterfly spindles can rattle which makes the engine sound shite. At tickover, apply pressure with fingers to the cable housings on the TB's on the inside. The rattle may go away somewhat.

Motorworks have a website or you can ring them up. There is also Motobins and James Sherlock that can provide used and new spares and can be found via Google.

Start with the simple bits such as TPS, coil and leads and work up.

Good luck

thank you for the advice,
i will see can i source the parts s/h.