Bike Smoking when coming off revs, Rider behind said smells very rich after new

[Kiwifruit]

Interesting Grog, many years ago Mitsubishi dealer we did work for had a couple of new cars stolen off the yard. They got a Tredia back and a Cordia Turbo got written off. The dealer told us the Tredia was the best one they had driven and used it as their demo car. From stone cold and thrashed.

[grog]

Bores like new Andre, doesnt mean rings have bedded. Im not sure im on right track but looks similar story to me.Look up Maxodyne decarboniser. I cant get link to work.

[Andre]

Maxodyne decarboniser. I cant get link to work.

https://maxodyne.com/product/ftc-decarbonizer/

[KiwiCol]

Maxodyne decarboniser. I cant get link to work.

https://maxodyne.com/product/ftc-decarbonizer/

Nice suggestion, looks great stuff.    

[Hooli]

Can you use that on ceramic bores? I know you can't hone them as it takes the coating off.

[grog]

Not sure Hooli. Maybe before he buys, send them an email

[Hooli]

Aye be worth checking I'd say or it could cause more issues.

[Hooli]

I'd still suspect something outside the bore/cylinder though. Normally if it's rings etc you'd see a difference across the pistons where one has failed & the others are ok, that's not been mentioned. So I'm thinking it's external to the cylinders & affecting the whole engine.

[Xdiavel]

I'd still suspect something outside the bore/cylinder though. Normally if it's rings etc you'd see a difference across the pistons where one has failed & the others are ok, that's not been mentioned. So I'm thinking it's external to the cylinders & affecting the whole engine.

Hi all,

Just to let you know I am still here and still got the issue :-(

I have an oil temp gauge in the filler hole, and it seems that when it hit 80deg or just above the problem starts.

I did the valve adjustment as cylinder 4 was tapping and after was nice and quiet.
Strangely this seemed to knock the throttle ballancing out once done which caused other issues. I re-balanced them again as cylinder 4 was now way out and causing a missfire! This solved that thankfully and wondered if I had been going around in circles with other issues.

I put the loud exhaust back on and went out to enjoy the old girl as not ridden it much due to falling out of love with it. Sadly the bike hit just over 80 degrees and could smell hot oil, then there it was smoking again!

The only thing left must be the rings! But as  you say hooli I do not understand how this is effecting all 4 cylinders as the heads of the pistons were all wet.

I did do a compression test some time last year and nothing jumped out at me as being bad, that was on a cold engine.

[Hooli]

I can't remember what you'd looked at now. Have you checked the crankcase breather that feds up to the airbox isn't blocked? The black block on top of the gearbox has some sort of mesh filter in it so I assume it could get blocked or the pipe twisted so it can't breathe there.
That'd cause too much crankcase pressure that could be forcing oil into places it shouldn't be.

[KiwiCol]

Too thin / wrong type of oil?  You're not running Motul7100 are you?   

Gulf Western Synergy 3000 10w/40, engine quiet, shifts smooth & no clunking going into gear, the 1400 engine loves this stuff.

[Barbastro K6]

or wear on cylinder-piston or valve guides. There is no other outlet for the oil.
maybe a 5 or 10W50 oil will help a little

[Xdiavel]

Too thin / wrong type of oil?  You're not running Motul7100 are you?   

Gulf Western Synergy 3000 10w/40, engine quiet, shifts smooth & no clunking going into gear, the 1400 engine loves this stuff.

Hi, I am running Motul5100 10w/50

[Xdiavel]

or wear on cylinder-piston or valve guides. There is no other outlet for the oil.
maybe a 5 or 10W50 oil will help a little

Yeah agree, I am using 10w/50 and still does it sadly. If you look back at my cylinder picture, to me it looks washed out ie too clean. And a puddle of oil or possible fuel on top. This was on all cylinders if memory serves. But zero smoke when cold started.

Valve seals changed and made no difference, all new head seals and gasgets

When idling for while when hot oil temp 80+ deg there is no smoke until you rev it then only on deceleration. And only short sharp revs. If you hold the throttle at say 5k rpm then let go there is nothing.


Rode 5 mins until temp dropped to approx 70deg got off and repeated and nothing,no smoke at all

[Xdiavel]

I can't remember what you'd looked at now. Have you checked the crankcase breather that feds up to the airbox isn't blocked? The black block on top of the gearbox has some sort of mesh filter in it so I assume it could get blocked or the pipe twisted so it can't breathe there.
That'd cause too much crankcase pressure that could be forcing oil into places it shouldn't be.

Hi mate,

It only has 9k mls and I did check the airbox and that pipe and it is like new ie not any sign of oil/misting in the hose. Checked pairs and they are as new looking.