WK400 owners thread.

[Andi_Archer]

Theres a nice two part video here on disassembling and replacing the head on an XR400 which may help

Code: Select all

https://www.youtube.com/watch?v=ZnaR5rMtsRk

[Tyrant68]

Hi all just a few pics to share some ideas, if you find your fuel gauge is way out on the WK remove the sender and bend the float gently down, ive tried to show roughly
where it can go if you place a steel rule horizontally across to meet the float after bending.........

20161211_1412071.jpg

Netsonic, if I left the sender as it is (too high) would the bike stop thinking its out of fuel even though it's not? Only takes a tenner to fill to brimming.

[netsonic]

Hi netsonic, thanks for your reply, yes I did drain the frame and the engine sump (by gear change). I also removed the gauze filter at the bottom of the frame, so I'm really not sure where all this water is coming from!

I think I'm going the bite the bullet and change the rings.

Phil

Hi Phil. i thought you would have, i think we are all intrigued as to what it is and what you find, wish you luck on changing the rings and keep us all posted...

[netsonic]

Hi all just a few pics to share some ideas, if you find your fuel gauge is way out on the WK remove the sender and bend the float gently down, ive tried to show roughly
where it can go if you place a steel rule horizontally across to meet the float after bending.........

20161211_1412071.jpg

Netsonic, if I left the sender as it is (too high) would the bike stop thinking its out of fuel even though it's not? Only takes a tenner to fill to brimming.

Hi Tyrant, i hope i have your question correct and i think its whether you think the bike is out of fuel based on the gauge reading which because its set wrong the answer is no its not out of fuel hence only getting a tenner in......... imagine you had no fuel gauge you would use the bike tank spec on litres vs average mpg and use the trip meter as we did oh so many years ago...........that means in old money for this bike we assume when brimmed on the side stand it will have 18-19 litres in the tank, assumed average 68mpg = 272 miles to a tank. Assuming you pay £1.15 per litre the tank from empty will take just over £20 but we dont do empty on bikes and we have no reserve so I have also assumed that 3 litres cant be used due to the shape of the tank so i run to about 200 miles from full before i head to the petrol station and my gauge at this point is on 2 bars but mine is over adjusted by a tad but gives me a kinda reserve/contingency approach as is should be on 1 bar........hope this helps

[Richard Simpson Mark II]

That white smoke doesn't look like oil smoke to me.
More like incomplete combustion: either excessive fuel (it's like an old-school car engine on 'choke') or possibly water in the fuel.
What does it smell like?
Can you collect some in a glass jar and see what it condenses out as?
Oil smoke is usually blue.

[Tyrant68]

Hi all just a few pics to share some ideas, if you find your fuel gauge is way out on the WK remove the sender and bend the float gently down, ive tried to show roughly
where it can go if you place a steel rule horizontally across to meet the float after bending.........

20161211_1412071.jpg

Netsonic, if I left the sender as it is (too high) would the bike stop thinking its out of fuel even though it's not? Only takes a tenner to fill to brimming.

Hi Tyrant, i hope i have your question correct and i think its whether you think the bike is out of fuel based on the gauge reading which because its set wrong the answer is no its not out of fuel hence only getting a tenner in......... imagine you had no fuel gauge you would use the bike tank spec on litres vs average mpg and use the trip meter as we did oh so many years ago...........that means in old money for this bike we assume when brimmed on the side stand it will have 18-19 litres in the tank, assumed average 68mpg = 272 miles to a tank. Assuming you pay £1.15 per litre the tank from empty will take just over £20 but we dont do empty on bikes and we have no reserve so I have also assumed that 3 litres cant be used due to the shape of the tank so i run to about 200 miles from full before i head to the petrol station and my gauge at this point is on 2 bars but mine is over adjusted by a tad but gives me a kinda reserve/contingency approach as is should be on 1 bar........hope this helps

Thanks Netsonic. Basically what I'm asking will the bike conk out as its gauge is registering no fuel and the senders not sensing fuel. Or, will it carry on until the tank is actually out of fuel and that little orange light will just keep flashing.

[netsonic]

Hi all just a few pics to share some ideas, if you find your fuel gauge is way out on the WK remove the sender and bend the float gently down, ive tried to show roughly
where it can go if you place a steel rule horizontally across to meet the float after bending.........

20161211_1412071.jpg

Netsonic, if I left the sender as it is (too high) would the bike stop thinking its out of fuel even though it's not? Only takes a tenner to fill to brimming.

Hi Tyrant, i hope i have your question correct and i think its whether you think the bike is out of fuel based on the gauge reading which because its set wrong the answer is no its not out of fuel hence only getting a tenner in......... imagine you had no fuel gauge you would use the bike tank spec on litres vs average mpg and use the trip meter as we did oh so many years ago...........that means in old money for this bike we assume when brimmed on the side stand it will have 18-19 litres in the tank, assumed average 68mpg = 272 miles to a tank. Assuming you pay £1.15 per litre the tank from empty will take just over £20 but we dont do empty on bikes and we have no reserve so I have also assumed that 3 litres cant be used due to the shape of the tank so i run to about 200 miles from full before i head to the petrol station and my gauge at this point is on 2 bars but mine is over adjusted by a tad but gives me a kinda reserve/contingency approach as is should be on 1 bar........hope this helps

Thanks Netsonic. Basically what I'm asking will the bike conk out as its gauge is registering no fuel and the senders not sensing fuel. Or, will it carry on until the tank is actually out of fuel and that little orange light will just keep flashing.

ah i see, yes the bike will keep going, the fuel sender, orange light and gauge run independent of the pump.

[Tyrant68]

Thanks Netsonic B)

[netsonic]

Thanks Netsonic and Bojer - and sorry to interrupt the fork discussion

No - I didn't get a tool kit with the bike maybe the dealer can help?

WRT to the smoke, if it was water cooled I would be convinced it had a head gasket leak - plumbs of white smoke - but its not. The smoke is definitely white and smells of oil. The bike seems to run clean at higher revs, but once idling for a few moments it starts gently smoking and gets worse. I did try putting paper in the gas flow as suggested - a few fine spots of oil but nothing serious.

Also the clear breather pipe keeps filling with a clear, tasteless fluid - presuming water. Even after a 20 minute run I'm getting 5-10mm of fluid in that pipe.

I want to try and get the bike 100% as I'm going to investigate doing my IAM bike test, and I want to trusty bike underneath me.

Phil

Phil just had a thought based on what Richard has said, could you check your TPS voltage, something ive mentioned in this thread before, long shot but if its over fueling on tickover could be causing the smoke like on choke, normally runs like a bag of spanners though so only a long shot but simple to check and illiminate before engine stripdown

[Bojer]

Not fully thought it through but I was thinking that maybe the scavenge pump is not working as it should and it's wet sumping ?? How much oil came out when you drained the sump ?, should only be a few cc I'd expect .