Quote Originally Posted by mudnut View Post
When you rebuilt the carby, did you have a go at making the second stage bore nice and smooth, with wet and dry paper?

I use a piece of vacuum hose blocked with a small ball bearing on the pre -heat diaphragm in the warmer months. In winter I swap out the blocked hose so the pre-heat works.

I also fitted a manual choke cable. After doing all of the above, the cold weather problems have thankfully disappeared.

The mechanic who built the engine for me also made the idle mixture a bit richer.
Thanks Mudnut. By pre-heat diaphragm do you mean the vacuum-operated flap on the air intake that opens above the exhaust manifold? Mine works but is missing the original sheet metal that would have funneled warm air from the manifold into the airbox via the flap.

Exhaust tip is sooty so probably running fairly rich as it is... Might have to look at fitting a manual choke. Did you find it difficult to fit etc?

Had a 10°C day in Adelaide today, on the short cold/rainy run uphill tonight home from work, the poor old Patrol barely made it up. Ended up in 1st gear doing 20km/hr, foot to the floor. Pulled over at the top and after a few minutes idling everything was back to full power and off I went. Very strange !