White smoke

[Silver]

how about telling us where you are? you never know someone on here may be fairly close.

[misterdimwiddy]

If you're certain there's no bore damage/valve guide/seal problems and it doesn't smell like coolant, I'd be looking into a breather problem causing excessive crankcase pressure to blow past the rings and burn.
Try running the engine with the breather pipe disconnected from the camcover, does it still smoke?

I am with you there but am puzzled because it sounds as though it only smokes on one cylinder??? Pressure would affect both pots I feel.

Also wondering why it would have had a cooked RH coil early on?

Changing head, barrels etc eliminates most things that would lead to smoking. Were the valves and pistons changed with these items? Even a cracked piston would have shown during compression testing.

Why did it drop onto one pot initially and then come back to two. Seems unlikely but could it be inlet related? Even if it was rich as anything due to a carb problem would it smoke? It would be rough if it was rich enough to smoke through poor mixture.

I am intrigued but unable to suggest much.

Thank you for even thinking about different issues regarding my TRX, it is a little baffling at the moment, initially it stopped running on number one LHS looking down from the seat, there was no white smoke at that time, then after checking the wear I changed the barrel and pistons then after that didn't work, I got a low mileage cylinder head, I changed the stem seals then I did a leak test on all valves not a sign of a leak. I believe the HT burn out was just a coincidence which was the result of a bad rectifier, changed them both and sparks are fine now. After doing the head and barrel it is firing on both and smoking from both, I have taken the breather off, let it run a while still white smoke, its the most frustrating fault I have had from any of my bikes. It doesn't seem petrol related. Well the next trial I have is to run without a filter, then I may just drain the coolant and run for a couple of mins to see if she clears up a little Then back to basics again and start it over just in case I missed anything. I haven't de-glazed the new barrel do you think it would cause it smoking if it was glazed over??

So the smoke only started after you changed the barrels, pistons and the head?

You say "then after checking the wear I changed the barrel and pistons then after that didn't work"; do you mean that different barrels and pistons did not bring it back onto 2 pots (but changing the head did)?

Not meaning to ask the blindingly obvious but did you check the ring gaps and bore clearance on the replacement pistons before they went in?

Any idea of the mileage of these parts?

I am trying to work out which change of parts introduced the smoke issue which seems to be independent from the initial loss of sparks on the lhs.......

[misterdimwiddy]

Just re-read your first post;

The problem began one sunny day and I was coming home after a long ride my baby started to run on one cylinder which got me home, thinking it was an electrical problem with the igniter's system I changed the plugs , no change, the CDI, no change and the right coil started to smoke so I changed the coil and rectifier which cured the electrical problem, that didn't change it running on one cylinder and it started to smoke from the exhaust on no two cylinder,

Sounds as though you had smoke from the no.2 cylinder before you changed the barrels, pistons or head so these shouldn't be the cause.

A bullet point sequence of events from start to the present to clarify what has been done may help to eliminate possible factors one by one?

I may attempt this myself this evening..............unless you have time to do so?

[cobbadiggabuddyblooo]

Electrical problem to start, so now you have spark at both coils BUT then white smoke appeared..
The vacuum and heater hose as Big Al said patched incorrect sound pretty plausible to the inlet manifold and carby's being back to front after dealing with the coils, plugs etc.
That would feed the radiator water directly into the inlet manifold..

[flyinghigh001]

how about telling us where you are? you never know someone on here may be fairly close.

I live in Uttoxeter Staffs near the three tuns pub, close enough to stagger home if I drank alcohol that is. loads of bikers around me but they tend to come see me for techno help .

[Silver]

Damn, went through there yesterday coming back from Stars at Darley.
The idea you might have got the vac hose on somewhere it shouldn't be sounds worth checking.
Hope you find the answer soon, its intriguing.