Smokes on tick over

[willowbedone]

Help my friend has a g80 which runs well starts ok and fine whilst riding But when on tick over it starts to smoke badly ? Any help would be greatly appreciated
Thanks Ian

[SPRIDDLER]

Hi Ian
Is that when upright or leaning over on the side stand?
Blue or black smoke?
Monobloc or Concentric carb or the early one with separate float chamber?
(Not that I can offer much either way as when leaning on the side stand (monobloc) I think (temp brain fade) they tend to run weak not smokey rich).

See you on the section brunch run tomorrow?

[g80csp11]

when a engine is at idle with the throttle closed the inlet port downstream of the carb is under maximum depression , so its likely that the inlet valve guide is worn and you get oil down the guide . that's my theory
if you remove the carburetor you will probably see heavy sticky oil deposits on the valve head (tulip) . answer is new guide and valve
it probably does the same when throttle is close running down hill , then accelerating away another classic symptom of worn guides

[Ralph]

Maybe worth checking the inlet valve oil adjustment.

[willowbedone]

Hi Ian
Is that when upright or leaning over on the side stand?
Blue or black smoke?
Monobloc or Concentric carb or the early one with separate float chamber?
(Not that I can offer much either way as when leaning on the side stand (monobloc) I think (temp brain fade) they tend to run weak not smokey rich).

See you on the section brunch run tomorrow?

Hi Neville hope you are all ok And thanks for reply Oil smoke when on side stand it has a monoblock carburettor I cannot make brunch run tomorrow This is due to purchasing a Norton dominator 88 1960 model collecting in the morning Tell you all more when I do get to a meeting

[SPRIDDLER]

Oil smoke when on side stand it has a monoblock carburettor

Hmm, yes in retrospect it does sound like valve guide wear/over-oiling rather than carburation.

I cannot make brunch run tomorrow This is due to purchasing a Norton dominator 88 1960 model collecting in the morning

O.K. Since your excuse isn't decorating or gardening you're excused parade.

[pkr87]

Whenever I have a cylinder head apart I fit an oil seal on the inlet valve, not on the exhaust. I am not sure where the seals were stolen from as they are in a large box of ' bits that will come in handy one day'. I suspect Mini Cooper S or a Fiat.

[willowbedone]

Oil smoke when on side stand it has a monoblock carburettor

Hmm, yes in retrospect it does sound like valve guide wear/over-oiling rather than carburation.

I cannot make brunch run tomorrow This is due to purchasing a Norton dominator 88 1960 model collecting in the morning

O.K. Since your excuse isn't decorating or gardening you're excused parade.

Hope I'm not on a fisser as corporal Jones would say Remember they don't like it up em

[SPRIDDLER]

I cannot make brunch run tomorrow This is due to purchasing a Norton dominator 88 1960 model collecting in the morning

O.K. Since your excuse isn't decorating or gardening you're excused parade.

Hope I'm not on a fisser as corporal Jones would say Remember they don't like it up em

Don't worry Ian. I haven't given your name to Capt. Spannering.