I seem to have the mirror image problem that Jonesy25 posted about a couple of months ago.
Rebuilt 1600 engine from the Engine shop, using single carb. Cylinders 1 and 2 get up to operating temperature rapidly with the exhaust reaching > 130 C in next to no time, while cylinders 3 and 4 hardly get above ambient temperature. I've got spark, I've got compression and I've checked the valve clearances. I've tried three different carbs , a genuine solex 34 pict 3 and two FAJ look-alikes and two different distributors: a 009 and a single vacuum electronic ignition unit.
I can't get tick over, the engine will only run with a bit of throttle.
When putting all the bits and pieces back on the bare engine, I used the inlet manifold ends from a 1300 on cylinders 3 and 4 and from a 1600 on 1 and 2. Is it possible that that could make a difference? Another thought is that the intake manifold has a large bore vacuum(?) pipe sticking out on the cylinder 3 and 4 side. What, if anything should that be connected to? I've plugged it.
Anyone got any ideas?
Cheers,
Nigel