Mikuni VM36

MrNorton · Mar 5, 2017

Hi all,does anybody else who has above carburettor on Commando seen

n idlespeed sometimes spitting out gasoline drops from airjet.
In my case some times drops flying far away from belmont,seems that in airjet bore is overpressure!!!.
What can cause that kind effect?.

cash · Mar 5, 2017

Spitting back can be caused by a weak mixture or over advanced ignition.

Dave

RoadScholar · Mar 5, 2017

MrNorton said:
Hi all,does anybody else who has above carburettor on Commando seenn idlespeed sometimes spitting out gasoline drops from airjet.
In my case some times drops flying far away from belmont,seems that in airjet bore is overpressure!!!.
What can cause that kind effect?.

If the 36 ran well at some point then, certainly, check your timing, also, if your carb sat for more than 2 months, check/replace your idle jet. But, mostly, spitting from the intake (carb) is a sign of a tight intake valve (possibly valve timing).

Mikuni VM36

MrNorton

cash

RoadScholar

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