Hi gang. 3 months ago I bought a nice Peugeot 405 as a fixer upper. I now have most of the bugs ironed out, except for one... I have a very anoying hesitation or oscilation on power around 2000rpms. I have tried the normal peugeot groups and lists, but most of them have inyected models and this is a Chilean made (yes, true!) 405 with a Solex 34/34 carburator.
Lets recall the whole story. It had 3 power problems: bad low end, a hole in the middle, and poor top end. I fixed the poor top end with a thorough cleaning and proper reassembly of the power valve (was assembled backwards, vaccumm and spring pushing the same direction).
I the fixed the poor low end with a CO machine and ignoring chilean mecanics who insisted on setting this carb to 2% CO and setting it to 0.5% CO as the Haynes manual says.
I now only have a small hole in the middle. It no longer a compleete hole in the power, but a hesitation that makes engine speed oscilate
+- 100 RPMs around 1800-2000 RPMs, making steady speed driving impossible.What am I missing? Carb is spotlessly clean, all jets clear, I pressure cleaned all passages with a can of compressed carb cleaner and now the car runs much better, but still has the hesitation.
Thanks,
ps. pictures: