Hi all,
My 1.6 starts perfectly every time from cold with the choke on full, even in this damp weather. However, when hot, it is not so good. I have found, with no choke and the excellorator depressed two thirds it helps but still takes a while to catch. Is it my car or am I missing carboretta knowledge?
Any input would be welcome, thanks.
Titus.
Since it starts O.K. from cold and in the damp, we know the electrics are fine, so your problem is with the fuel system. It is normal for a fixed jet carb. engine when really hot to be slightly rich owing to the expansion of the hot fuel in the float chamber spilling into the manifold via the venturis, but if the float level is correct it should not cause too much problem. Slowly opening the throttle to two thirds or even full open, and then cranking the engine will allow more air in too weaken the over-rich condition and allow quick starting. You do NOT want to pump the throttle as that will inject more fuel making the rich condition worse.
I suspect that the float level is slightly too high causing too much richness making hot starting worse. Either that or there is a leak into the system, which may be because of a poor gasket or seal. So you need to carefully strip and check the carb. and if necessary re-set the float level, then try it again.
Roy