Fuel problem??

[Louise]

Going to work this afternoon, running fine, hit the motorway and the bike just sounded like a sack of shyte.
Splutterin, sounded terrible, would give me power, then wouldnt, chugging, jolting forward.
Its in fact sounding like a V-twin right now.
Slow ride coming home, its just at the 3k rev mark, 1st 2nd gear its very very sluggish,almost sounding like it wants to backfire - untill i manage to pick up speed, say around 40mph and the bike sounds fine? Pulling away is a nightmare!!
ive just put redex in with some more fuel...
Am thinking fuel starvation?? will redex clear it up eventually?
i need my bike all this week for work, but I dont want to cause more damage, if any

[Clanger]

Wet plugs??
Carb heater?

Possibly...you have been riding about on the motorways in this horrible weather...it might be worth pulling your plug leads off and checking they are dry for a start...
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Be who you are and say what you feel, because those who mind don't matter, and those who matter won't mind - Dr. Seuss

[Louise]

Ive not riden in the rain, the bike was outside last night tho.. So unsure how the plugs could get wet, I will check tommorow just to make sure.

[Walloper]

Coil/s.
Water gets in and fcuks them for no reason.

Fuel solenoid valve. Opens when you turn on the key.

Is it fuel injected?
Could be shit in the system but that normally kills it completely.
Intermittent splutter/stutter sounds more like electrical....
Connection/s.
Dealer check?
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W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

[Acemastr]

sounds like it needs a good redline to clear some crap in the fuel system. Possibly a partially blocked breather pipe?
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2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

[Ariel Badger]

I will bet that there is water in the carb float bowls take them off and drain them.
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Bikers make great organ donors, get 115 on your licence today.

[Louise]

Right, taken tank off, airfilter out. Got the these.
Slight mix of white stuff/ fuel (on the right of pic)
the "2nd pic is a side veiw of the throttle bodies.
Its fuel injected.
Im having troble removing the whole air box Am trying to check the spark plugs!

https://i144.photobucket.com/albums/r167/LouiseB24/DSC_0736.jpg


https://i144.photobucket.com/albums/r167/LouiseB24/DSC_0735.jpg

[Walloper]

Don't drain the carbs what ever you do.

I don't know that water in fuel woulf give that symptom. It would normally kill the bike dead. (It doesn't emulsify with fuel but water can be full of crud and it's the crud that could cause stop start spluttery running.)
My famous symptom like that was the ignition system.
There is so much power in modern electronic ignition that is can blast through an amazing amount of conditions that old fashioned ignition would flat fail.
If the bike has had a soaking or been put away wet/after washing. The moisture can collect as condensation. Over time this can cause corrosion and high tension electrical energy tracing to ground.
That can cause lack of power and erratic running.

Drain the fuel tank into a spotless clean container.
If there is any sign of detritus or water in the fuel then it may well be a fuel contamination problem.
Redex will not fix it. The problem will be something blocking the injectors or a fuel pressure regulator.
But do not panic.
If there is muck in the fuel drain off the tank and remove as much of the fuel system as you can.
Try to get the hoses and bits clean using one of those (Useless) PC air blower can things out of Staples.
Clash it al back together and refill with clean fuel.

Try to start as normal. It will take a few seconds to get fuel back through the system.

Worst thing is if there is a blockage in the injectors. This is more complex. I have no intimate knowledge of this Kwakakwaka 632 but my triumph needed two bloody injectors when it got contaminated.
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W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

[Vincent]

[Walloper]

[Louise]

The bike is turning over but not firing up now So ive ordered sparks. Will drain the tank as well once they turn up.
Its all fresh fuel tho, im always adding a fiver every other day for work

[Walloper]

[Louise]

[Louise]

Right, Ive changed the spark plugs.
Rode it up the road, was fine for 2 miles. Then it started all over again.
Not as bad this time tho, More so if i was doing 35 in 4th gear - it would play up, i was just testing all the gears. Then a few more miles up the road, pulling away in 1st wasnt great, and would grunt/chugg.
Heres a link to the vid, its not great - the first 'rev' you can here its not right. the Revs after are normal.
Im lost now, maybe not firing on all cylinders

https://www.youtube.com/watch?v=whxmVEBo5E4

[yanto]

hi bikes looks clean you havent jet washed it have you
every thing sems to point to water in the system and its easy to get water in the ram air of a 636 i have sen it a few times before
also that air box has a lot of dirt in it
could of got into the injection system

[Louise]

I had about 20 mins before darkness set in so i just changed the plugs. Not jet washed the bike. I shall try the tissue tomo, but isnt that the same with Wd40 sprayed onto the downpipes? Ill grab photos of old sparks tommorow.

[yanto]

[Louise]

Right, 3rd time taken to bits
All the plugs spark fine.
Ive put wet tissue on all the four pipes when warming up, all hiss/water drys right away.
The problem did get better - would only 'splutter/die' a few times - mainly in lower gear/slow speeds/pulling off.
I took it apart again, cleaned the HT leads inside - there was a fair bit of crud. I swaped over Ht 1 and 4 - then went for a run.
Runs alot better, and only twice it 'wanted' to splutter but didnt.
Im guessing I need to change the HT coil pack??
But the whole bike just stinks of fuel

Pics of old plugs as asked

https://i144.photobucket.com/albums/r167/LouiseB24/DSC_0749.jpg

https://i144.photobucket.com/albums/r167/LouiseB24/DSC_0747.jpg

https://i144.photobucket.com/albums/r167/LouiseB24/DSC_0746.jpg

When i took the new plugs out to check, 1 and 4 were fine. However 2 and 3 were slightly covered in oil.

[Clanger]

Did you dry the leads too - inside where they meet the sparks?

TBH, Louise if my sparks looked like that, I'd lob them, and replace with new ones.

Hopefully by bumping this thread back up, the others will come back with more advice...
____________________
Be who you are and say what you feel, because those who mind don't matter, and those who matter won't mind - Dr. Seuss

[Walloper]

Firstly. Those pictures of the sparking plags are dreadfull.
You are far to close to the plugs to permit a sharp image.
Move the camera back to about 16".

Second. The plugs look usable but if you say the symptom improves as you clean the electrics then look at replacing the HT leads. And if doing that may as well do all four plugs too.
Does this engine have individual coil units? If so you may need dealer help to identify the one/s that are bad. If plugs HT leads don't help.
Or some Dude on here may have a easy way to check.
Ignition systems are normally cheaper to fix than fuel systems.
____________________
W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

[Louise]

Sorry my cam is a lil poor on close ups.
They are the old plugs, I have replaced with 4 new ones now

[Walloper]