33 1.7 hard to start when hot

[omgShane]

Hey guys, im slowly getting all the little things done on my 33 (love it to bits)

I have come across a problem that is a bit wierd, if you try and restart the motor after its been sitting for a little while warmed up it will be very hard to restart, usually requiring a few pumps of the accellerator to get her going, starts fine cold and the starter motor cranks over just fine (saw your other post col)

I have looked a bit into it and it seems to be vapour lock, but im wondering if theres a specific cause for it and if theres anything that can be done about it

[colcol]

Vapour lock only occurs in stinking hot weather, the carbs get so hot that the fuel turns from liquid to gas, and won't start, i am assuming yours is carby, not EFI, when hot, try pumping the accelerator ONCE and when starting keep your pedal on the floor untill it kicks, Colin.

[omgShane]

yeah mate, is twin carb.. oh well, at least i know its not something to look at terribly hard, thanks col

[colcol]

When its hot, the fuel vapourises, and there is no petrol, so give it a good pump on the pedal, so that the accelerator pumps, 4 in total, pump some petrol in the carbs, then foot flat to the floor to get some air in, i put an extra spacer under each carb, to add a bit more insulation between the hot motor and the carbs to stop the fuel boiling off, helps a bit, Colin.